MLX91207 High Speed Hall Sensor IC Datasheet 2. Application Examples 1. Features and Benefits Programmable high speed Hall sensor Wide bandwidth, short response time 8s Programmable linear transfer characteristic Selectable analog ratiometric output Measurement range from 15mT to 400mT Thermometer output 17 bit ID number Single die SOIC8 package RoHS compliant Lead free component, suitable for lead free soldering profile 260 C Low thermal Drift (Gain and Offset) Current sensor applications - Over current detection circuit - Inverter Application HEV &EV - AC/DC converters - Battery management Position sensor application Ordering Code Product Temperature Code Package Code Code MLX91207 L (-40C to 150C) DC (SOIC) MLX91207 L (-40C to 150C) DC (SOIC) MLX91207 L (-40C to 150C) DC (SOIC) MLX91207 L (-40C to 150C) DC (SOIC) MLX91207 L (-40C to 150C) DC (SOIC) MLX91207 L (-40C to 150C) DC (SOIC) (1) Ratiometry is disabled by default for this version Ordering Option Code CAA-005 CAA-005 CAA-007 CAA-007 (1) CAA-015 (1) CAA-015 Packing form Code TU (Tube) RE (Reel) TU RE TU RE Comment 15-45mV/mT (25mV/mT) 15-45mV/mT (25mV/mT) 5-20mV/mT (10mV/mT) 5-20mV/mT (10mV/mT) 15-45mV/mT (25mV/mT) 15-45mV/mT (25mV/mT) Ordering example : MLX91207-LDC-CAA-007-TU 3. Functional Diagram 3.3V core TEMPOUT Thermometer 3.3V ana Voltage Regulator & Rev.Pol. protection 3.3V dig VDIG VDD VSS Oscillator Clock 1 MHz Generator fs = 1MHz Input data rate fs = 1MHz 4Phase Switch Box Integrating P2P DIDO G = 15 ... 239 fi = 250kHz or 25kHz Intermediate data rate G = 0.4 ... 1 fo = 250 kHz or 25 kHz Output data rate S&H RG[2:0] 10 bits 2 bits PLATEPOL FG[9:0] TC2ND_COLD[4:0] OFFSETDRIFT_HOT[5:0] TC2ND_HOT[4:0] OFFSETDRIFT_COLD[5:0] Sensitivity trimming OUT DAC 3 bits HallSensors selection Output Buffer G=4 Hall Bias TC1ST[6:0] Clamping LPF 5V ratiometric output 12 bits 6 bits Digital Ratiometry FILTCODE[1:0] XA[11:0] CLAMPLOW[2:0] CLAMPHIGH[2:0] DIGITAL + EEPROM Rough Gain Fine Gain Offset Compensation Polarity selection Bandwidth Voq adjust Figure 1: Block diagram REVISION 16 - APRIL/12 39010091207 PAGE 1 OF 20 MLX91207 High Speed Hall Sensor IC Datasheet 4. General Description The MLX91207 is a monolithic programmable hall sensor IC, which provides a high speed analog output signal proportional to the external applied flux density. The sensor is ideally suitable for current sensing application and features an additional thermometer output. Moreover, the sensor can be integrated in position sensing applications where fast response time is required. The transfer characteristics of the MLX91207 are fully programmable (offset, gain, clamping levels, diagnostic functions...). The full analog chain features a fast response time and allows use of the sensor for applications where a very fast response time < 10 sec is required. In the typical application the sensor is used in combination with a ring shaped soft ferromagnetic core. The Hall-IC is placed in a small air gap and the current conductor is passed through the inner part of the ferromagnetic ring. The ferromagnetic ring concentrates and amplifies the magnetic flux on the Hall-Sensor IC which generates an output voltage proportional to the current. Figure 2 shows a typical sensor application for a contact-less current measurement. Figure 2: Typical application of MLX91207 REVISION 16 - APRIL/12 39010091207 PAGE 2 OF 20 MLX91207 High Speed Hall Sensor IC Datasheet Table of Contents 1. Features and Benefits.......................................................................................................................................1 2. Application Examples .......................................................................................................................................1 3. Functional Diagram ..........................................................................................................................................1 4. General Description..........................................................................................................................................2 Table of Contents .................................................................................................................................................3 5. Glossary of Terms .............................................................................................................................................4 6. Absolute Maximum Ratings ..............................................................................................................................4 7. Pin Definitions and Descriptions .......................................................................................................................4 8. General Electrical Specifications .......................................................................................................................5 9. Magnetic specification .....................................................................................................................................6 10. Output specification .......................................................................................................................................6 10.1. Timing specification ................................................................................................................................6 10.2. Accuracy Specification ............................................................................................................................7 10.3. Remarks to the achievable accuracy ......................................................................................................7 11. Thermometer Output .....................................................................................................................................7 12. Programmable Items ......................................................................................................................................8 12.1. Customer Parameter Table.....................................................................................................................8 12.2. Description of Programmable Items.......................................................................................................9 12.2.1. Output Mode Configuration (OUTMODE) .......................................................................................9 12.2.2. Output impedance mode (DIAGINFAULT) .......................................................................................9 12.2.3. Sensitivity Programming (ROUGHGAIN and FINEGAIN) ..................................................................9 12.2.4. Offset Compensation VOQ (XA) .......................................................................................................9 12.2.5. Sensitivity polarity (PLATEPOL) ......................................................................................................10 12.2.6. Clamping Level Programming (CLAMPLOW, CLAMPHIGH) ...........................................................10 12.2.7. Bandwidth and Filter Programming (FILTER) .................................................................................11 12.2.8. Power Limitation (OUTSLOPE) .......................................................................................................11 12.2.9. Output Ratiometry (RATIODIS) ......................................................................................................12 12.2.10. Sensitivity Temperature Drift Programming (TC1ST, TC2ND_COLD, TC2ND_HOT).....................12 12.2.11. Offset Temperature Drift Programming (OFFDRIFT_COLD, OFFDRIFT_HOT) ..............................12 12.2.12. Product Identification (MLXID, CSTID) .........................................................................................12 13. Self-Diagnostic.............................................................................................................................................. 13 14. Applications Information .............................................................................................................................. 14 14.1. Current Measurement ..........................................................................................................................14 14.2. Linear Position ......................................................................................................................................14 15. Recommended Application Diagrams ........................................................................................................... 15 15.1. Resistor and Capacitor Values ..............................................................................................................15 15.2. Pull down resistor for diagnostic low ...................................................................................................15 15.3. Pull up resistor for diagnostic high .......................................................................................................15 16. Standard information regarding manufacturability of Melexis products with different soldering processes. 16 17. ESD Precautions ........................................................................................................................................... 16 18. Package Information .................................................................................................................................... 17 18.1. SOIC8 Package Dimensions...................................................................................................................17 18.2. SOIC8 Pin Out and Marking ..................................................................................................................17 19. Related documents and toolsPackage Information....................................................................................... 19 19.1. Related documents ...............................................................................................................................19 19.2. Related software ..................................................................................................................................19 19.3. Related hardware .................................................................................................................................19 20. Contact......................................................................................................................................................... 20 21. Disclaimer..................................................................................................................................................... 20 REVISION 16 - APRIL/12 39010091207 PAGE 3 OF 20 MLX91207 High Speed Hall Sensor IC Datasheet 5. Glossary of Terms Tesla TC NC ADC DAC LSB MSB DNL INL ASP DSP PTC Units for the magnetic flux density, 1 mT = 10 Gauss Temperature Coefficient in ppm/deg C Not Connected Analog-to-Digital Converter Digital-to-Analog Converter Least Significant Bit Most Significant Bit Differential Non Linearity Integral Non Linearity Analog Signal Processing Digital Signal Processing Programming Through Connector 6. Absolute Maximum Ratings Parameter Positive Supply Voltage (overvoltage) Value +20 Units V Reverse Supply Voltage Protection -10 V Positive Output Voltage +10 +14 (200 s max, TA = +25C) 300 -0.3 V mA C Output Current Reverse Output Voltage Symbol Vdd Iout mA V Reverse Output Current Operating Ambient Temperature Range TA -50 -40 to +125 Storage Temperature Range TS -55 to +150 C 2 T Magnetic Flux Density Table 1: Absolute maximum ratings Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute maximum rated conditions for extended periods may affect device reliability. 7. Pin Definitions and Descriptions Pin 1 2 3 4 5 6 7 8 Name VDD VSS VDIG MUST1 OUT TESTOUT MUST0 TEMPOUT Type Supply Ground Supply Digital Analog Digital Digital Analog Function Supply Voltage Supply Voltage Digital supply voltage, 3.3 V, internal regulated Test pin Sensor output signal Test pin Test pin Temperature sensor output Table 2: Pin definition and description It is recommended to connect the unused pins to the Ground (see section 14) for optimal EMC results. REVISION 16 - APRIL/12 39010091207 Page 4 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 8. General Electrical Specifications o o Operating Parameters TA = -40 C to 125 C, Vdd = 5.0 V, Iout = +/-2mA, recommended application diagram in section 14 used, unless otherwise specified. Parameter Nominal Supply Voltage Symbol Vdd Test Conditions Supply Current Idd Without output load o o TA = -40 C to 150 C Output Current Output Resistance Output Capacitive Load Output Short Circuit Current Iout -2 Vout = 50% Vdd, RL = 5k Cload Ishort 5 Output shorted to Vdd Permanent Output shorted to Vss Permanent Leakage current Ileak High impedance mode Output Voltage Swing (Linear Range) Vout_pd pull down 10 k Vout_pu High-impedance mode levels BrokenVss Output Levels Under-voltage detection (1) (1) BrokenVdd Output Levels Min 4.5 (1) (4) Max 5.5 Units V 9 12 mA 2 1 5 10 50 Not Destroyed mA nF Not Destroyed (1) 5 uA 5 95 %Vdd pull up 10 k 5 95 %Vdd Vout_HiZ_pu pull-up RL 30 k 97 Vout_HiZ_pd pull-down RL 30 k OUT with pull-down RL 10 k (2) OUT with pull-up RL 30 k (2) OUT with pull-down RL 30 k (2) OUT with pull-up RL 30 k Vdd_uvd Detected Voltage (L to H) (1) Typ 5 %Vdd 3 %Vdd 3 3.3 3.45 %Vdd %Vdd %Vdd %Vdd V 0.3 0.4 9.5 V V 97 3 97 3.15 Vdd_uvh Vdd_ovd1 Hysteresis Detected Voltage (L to H) 0.25 7.9 Over-voltage detection mode 2 Vdd_ovh1 Vdd_ovd2 Hysteresis Detected Voltage (L to H) 0.8 6.7 1.6 7.6 V V Clamped Output Level Vdd_ovh2 Clamp_lo Hysteresis Trimming Range 0.05 (3) 5 0.5 10 V %Vdd Clamp_hi Trimming Range 90 95 (1) Over-voltage detection mode1 (4) (1) (4) (3) %Vdd Table 3: General electrical parameters (1) (2) (3) (4) Refer to chapter 13 Self-diagnostic, table 15. Valid for TEMPOUT with pull-up (min. 30k), pull-down (min. 30k) or not connected Factory programmed clamping level According to the figure below Vout Hysteresis Detected Voltage Vdd Figure 3: Detected voltage and hysteresis definitions REVISION 16 - APRIL/12 39010091207 Page 5 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 9. Magnetic specification o o Operating Parameters TA = -40 C to 125 C, Vdd = 5.0 V, unless otherwise specified. Parameter Magnetic field range Symbol B Test Conditions Linearity Error NL B = 45 mT (TA = 25 C) Min 15 (2) Programmable Sensitivity S Sensitivity programming Resolution Table 4: Magnetic specification Sres 15 (3) 5 Typ 45 Max 450 Units mT 0.1 (2) 25 (3) 10 0.1 0.25 (2) 40 (3) 20 %FS mV/mT mVm/T % Typ 8 Max 10 Units s (1) (1) By design (2) MLX91207LDC-CAA-005 / MLX91207LDC-CAA-015 (3) MLX91207LDC-CAA-007 10. Output specification 10.1. Timing specification o o Operating Parameters TA = -40 C to 125 C, Vdd = 5.0 V, unless otherwise specified Parameter (1) Step Response Time Symbol Tresp Bandwidth BW Power on Delay TPOD Test Conditions Voq 2 V BW =Range 100 kHz - No filterto Full (referenced externally applied field) Vout =100% of FS (BW = 100 Hz) (BW = 1000 Hz) (BW = 10 kHz) (BW = 60 kHz - No filter) Ratiometry Cut-off Fratio Frequency Table 5: Timing specification of the analog output Min 60 kHz 100 10 0.35 0.25 ms ms ms ms 250 Hz (1) Time interval between when the applied magnetic field reaches 90% of it's maximum value and when the sensor's output reaches 90% corresponding to this magnetic field REVISION 16 - APRIL/12 39010091207 Page 6 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 10.2. Accuracy Specification o o Operating Parameters TA = -40 C to 125 C, Vdd = 5.0 V, S = 50 mV/mT, unless otherwise specified. Specifications are defined for final test conditions: PLATEPOL=0 and RATIODIS=0. Parameter Thermal Offset Drift Symbol T Voq Thermal Sensitivity Drift RMS Output noise TC Nrms Voq Ratiometry Voq Sensitivity Ratiometry S Test Conditions Min -0.4 Typ Max +0.4 Units %Vdd -150 +150 0.02 ppm/C %Vdd Voq = 50% Vdd Vdd = 10% Vdd 9.8 10.2 % Vdd = 10% Vdd B = 45 mT 9.8 10.2 % S = 1 %Vdd/mT (= 300 mV/mT @ Vdd=5V) Table 6: Accuracy specific parameters 10.3. Remarks to the achievable accuracy The achievable target accuracy is dependent on the user's end of line calibration. The resolution for the offset and offset drift calibration is better than 0.1%Vdd. The trimming capability is higher than the measurement accuracy. An end user calibration can increase the accuracy of the system. 11. Thermometer Output The thermometer output voltage is in the range from 367mV to 2930mV for temperatures ranging from -40C to 125C. The pin shall be able to sustain a low impedance connection to maximum 14V. The output is not ratiometric. Parameter Symbol Test Conditions Min Output voltage with T = 35degC 3-bit adjustment Offset T35 Slope Tslope Accuracy Tacc Load capacitor CloadTherm External through bonding wire Output current Iouttherm Typ Units 1.38 V 13.5 mV/degC -5 1 -0.1 Max 5 degC 50 nF +0.1 mA Table 7: Thermometer output specifications REVISION 16 - APRIL/12 39010091207 Page 7 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 12. Programmable Items 12.1. Customer Parameter Table Customers can re-program the parameters described in the table below by using the Melexis PTC-04 hardware and the Product Specific Functions (PSF) libraries provided by Melexis. We recommend using the latest version of the PSF and the latest version of the firmware with a communication speed of 10kbps (limited by a maximum output capacitor of 50nF). Software and fimrware are available on the softdist platform (see contact details on page 20 to request an account). Parameter Bits Comment 1 1 3 10 12 1 Factory Setting 1 0 Trimmed Trimmed Trimmed 0 OUTMODE DIAGINFAULT ROUGHGAIN FINEGAIN XA (1) PLATEPOL CLAMPLOW 3 Trimmed Clamping low level CLAMPHIGH 3 Trimmed Clamping high level FILTCODE 3 0 OUTSLOPE (1) RATIODIS TC1ST TC2ND_COLD 2 1 7 5 3 (2) (2) 0 /1 Trimmed Trimmed Power limitation of the output driver on high frequencies Disable ratiometry between output signal and supply Sensitivity temperature drift correction first order Sensitivity temperature drift correction second order for cold temperatures TC2ND_HOT 5 Trimmed Sensitivity temperature drift correction second order for hot temperatures OFFDRIFT_COLD OFFDRIFT_HOT MLXID CSTID 6 6 48 17 Trimmed Trimmed Programmed N/A Capacitive load selection Output impedance setting Rough gain preamplifier Fine gain amplifier from 0.4 to 1.0 Offset compensation VOQ Change of sensitivity sign Analog filter Offset temperature drift correction for cold temperatures Offset temperature drift correction for hot temperatures MLX ID Customer ID Table 8: Customer programmable parameters (1) Changing these parameters has an impact on temperature calibration. (2) 0 for CAA-005/CAA-007 and 1 for CAA-015 REVISION 16 - APRIL/12 39010091207 Page 8 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 12.2. Description of Programmable Items 12.2.1. Output Mode Configuration (OUTMODE) OUTMODE configures the output driver. For standalone applications (output of the sensor directly connected to a cable) we recommend using OUTMODE 1 because of better EMC robustness. If the sensor is integrated on a PCB a smaller load capacitor can be applied. The output capacitor has to be considered in reference to OUTMODE. OUTMODE 0 1 Output Driver (1) (2) Integrated PCB mode,CL = 1..10nF (1) (2) Standalone mode, CL = 5nF..50nF Table 9: Output driver configurationmax. (1) See section 14, CL = C4 (2) Factory setting: OUTMODE=1 12.2.2. Output impedance mode (DIAGINFAULT) DIAGINFAULT sets the output impedance mode. DIAGINFAULT 0 1 Output impedance Low impedance mode (normal mode) High impedance mode (diagnostic level) 12.2.3. Sensitivity Programming (ROUGHGAIN and FINEGAIN) The sensitivity is programmable with 3 bits for ROUGHGAIN and 10 bits for FINEGAIN from 5 to 45 mV/mT. Different option codes correspond to different sensitivity ranges: Ordering Option Code CAA-005 / CAA-015 CAA-007 Typical Rough Gain 3 1 Typical Sensitivity [mV/mT] 25 10 Minimum Sensitivity [mV/mT] 15 5 Maximum Sensitivity [mV/mT] 45 20 In order to have a safety margin regarding mechanical tolerances Melexis recommends designing the application in such a way that the typical sensitivity can be used with. If the target sensitivity of the module is out of the defined range (see table above), the hardware and software tools provided by Melexis will not be able to properly calibrate the sensor. 12.2.4. Offset Compensation VOQ (XA) The offset is programmable with 12 bits in 1.25 mV steps over the full output range. This corresponds to a calibration resolution of 0.025 %VDD. REVISION 16 - APRIL/12 39010091207 Page 9 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 12.2.5. Sensitivity polarity (PLATEPOL) The polarity of the sensitivity can be programmed by changing the value of the PLATEPOL bit PLATEPOL 0 1 Polarity Positive Negative Please note that the factory calibration is done with PLATEPOL=0 . Melexis cannot guarantee the magnetic specification if this parameter is changed during customer calibration. 12.2.6. Clamping Level Programming (CLAMPLOW, CLAMPHIGH) The clamping levels limit the maximum and minimum output levels. The clamping levels are ratiometric (if RATIODIS = 0). The CLAMPLOW parameter adjusts the minimum out put voltage level from 5%...10%Vdd. The CLAMPHIGH parameter sets the maximum output voltage level from 90...95%Vdd. 100 % 90 % 97 % 95 % 90 % Diagnostic Band (High) Clamping High 80 % Output Level 70 % 60 % 50 % Linear Range 40 % 30 % 20 % 10 % 10 % 5% 3% Clamping Low 0% CLAMPLOW 0 1 2 3 4 5 6 7 Diagnostic Band (Low) Minimal output [%Vdd] 4.8 5.7 6.6 7.5 84 9.3 10.2 11.2 Table 11: Clamping low level table (typical values) REVISION 16 - APRIL/12 39010091207 Page 10 of 20 MLX91207 High Speed Hall Sensor IC Datasheet CLAMPHIGH 0 1 2 3 4 5 6 7 Maximal output [%Vdd] 90.6 91.4 92.4 93.3 94.3 95.2 96.1 97 Table 12: Clamp high level table (typical values) The clamping functionality can be disabled by programming CLAMPLOW=CLAMPHIGH=7. The clamping levels calibrated during final test are: - 6%Vdd (+/- 0.5%Vdd) for CLAMPING LOW - 94%Vdd (+/- 0.5%Vdd) for CLAMPING HIGH 12.2.7. Bandwidth and Filter Programming (FILTER) FILTCODE allows adjusting the internal bandwidth of the sensor. The power on delays is subjected to the FILTCODE setting. For a low power consumption applications Melexis recommends FILTCODE=0 in a duty cyle mode. FILTCODE 0 1 2 3 4 5 6 7 Typical Bandwidth [kHz] 60 9 40 2 9 0.9 4 0.2 Power on delays [ms] 0.25 0.35 0.28 0.73 0.5 1.45 0.82 5.2 Table 13: FILTCODE settings and typical bandwidth 12.2.8. Power Limitation (OUTSLOPE) OUTSLOPE defines the power limit above which the output driver turns off to prevent damages to the IC. The power dissipated in the IC output driver is measured by the IC itself. The power is obtained by multiplying continuously the voltage across the conducting MOS driver by the output current I out. When the power reaches the power limit, the output driver is switched off and on such that, on average, the measured power is maintained equal to the power limit. For OUTSLOPE = 3, the output driver is always enabled independently of the measured power. Value 0 1 2 3 Power limitation [mW] 50 100 200 DISABLED Table 14: Output power limitation REVISION 16 - APRIL/12 39010091207 Page 11 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 12.2.9. Output Ratiometry (RATIODIS) RATIODIS allows enabling and disabling the ratiometry of the output in reference to the supply voltage by setting respectively 0 and 1 in the EEPROM. Please note that Melexis can not guarantee the magnetic specifications after changing the ratiometry factory setting. Different product versions with different ratiometry settings are available: MLX91207 version CAA-005 CAA-007 CAA-015 Ratiometry Default value 0 (Enabled) 1 (Disabled) 12.2.10. Sensitivity Temperature Drift Programming (TC1ST, TC2ND_COLD, TC2ND_HOT) First order sensitivity temperature drift can be trimmed from -2000 to 2000 ppm/K with TC1ST. The programming 2 resolution is 40 ppm/K. Second order sensitivity temperature drift can be trimmed from -6 to 6 ppm/K with TC2ND. 2 The programming resolution is 0.4/ppm/K . The second order can also be seen as third order correction since cold and hot sides are independently adjusted. The Linear Temperature Coefficient of the sensitivity will be trimmed to a target value of 0 ppm/C with a tolerance of +/- 150 ppm/C by the 7 bits programming of the TC1ST. 12.2.11. Offset Temperature Drift Programming (OFFDRIFT_COLD, OFFDRIFT_HOT) Offset temperature drift can be trimmed from -2.25 to +2.25 mV/K. The programming resolution is 0.075 mV/K. This first order correction is done independently for temperatures over 25C and below 25C. The offset drift corrections are ratiometric (if RATIODIS = 0). The parameter will be trimmed to 0 mV/C by Melexis. The end user can adjust this parameter after the assembly into their product in order to achieve highest accuracy. 12.2.12. Product Identification (MLXID, CSTID) MLXID A 48-bit MLX ID is used to guarantee MLX traceability (lotnumber, wafernumber, wafer position & PSF option code) and is split up into a 3x16 bit register (MLXID1, MLXID2, MLXID3). The programmed PSF option code is stored in MLXID3[2..0] and defines the gain setting used during the factory calibration . PSF Option Code MLXID3[2..0] 3 (1) Ordering Option Code (2) XXX-005 3 XXX-015 1 XXX-007 (1) The option code mentioned in all 91207 related documentation (application notes, PSF and User Interface) refers to the PSF Option Code. (2) The Ordering Option Code mentioned on the page 1 of this datasheet refers to the Ordering Code, which defines the Chip version and the sensitivity range of the sensor CSTID A 17-bit customer ID is available to create a dedicated traceability system REVISION 16 - APRIL/12 39010091207 Page 12 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 13. Self-Diagnostic The MLX91207 provides numerous self diagnostic features. Those features increase the robustness of the IC functionality as it will prevent the IC from providing an erroneous output signal in case of internal or external failure modes ("fail-safe"). Error Action Effect on Outputs Calibration Data CRC Error (at power up and in normal working mode) Fault mode Power On delay Undervoltage Mode High Impedance mode Pull down resistive load => Diag (1) Low resistive => Diag High High Impedance mode Pull 1 msup max in highload impedance (1) (2) IC reset (4) (3) Overvoltage detection Mode 1 (Threshold : min 7.9 V - max 9.5 V) (5) Overvoltage detection Mode 2 (Threshold : min 6.8V - max 7.5V) IC is switched off (internal supply) (3) IC reset Remarks followed by settling High Impedance mode (1) 300mV Hysteresis High Impedance mode Idd < 1mA (1) 500mV to 1500mV Hysteresis High Impedance mode (1) 100mV Hysteresis Broken Vss IC is switched off High Impedance (6) With some restrictions on pullup/pull-down resistors on OUT and TEMPOUT, see Chapter 8, page 5, Table 3 Broken Vdd IC is switched off High Impedance (7) With some restrictions on pullup/pull-down resistors on OUT, see Chapter 8, page 5, Table 3 Table 15: Self diagnostic (1) (2) (3) (4) (5) (6) (7) Refer to Table 3: General electrical parameter, parameter High-impedance modes levels Refer to Table 3: General electrical parameter, parameter Under-voltage detection The internal supply is regulated but the digital sequencer (hall element spinning) is stopped Refer to Table 3: General electrical parameter, parameter Over-voltage detection mode 1 Refer to Table 3: General electrical parameter, parameter Over-voltage detection mode 2 Refer to Table 3: General electrical parameter, parameter BrokenVss Output Level Refer to Table 3: General electrical parameter, parameter BrokenVdd Output Level REVISION 16 - APRIL/12 39010091207 Page 13 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 14. Applications Information 14.1. Current Measurement As a typical application the MLX91207 can be used as a non intrusive current sensor. A current flowing through a conductor generates a magnetic field around it, which is direct proportional to the amount of current flow. The field generated is rather small and hard to measure accurately compared to the current, therefore other approaches are needed in order to reach good solutions. An easy and well established principle is the use of a ring shaped concentrator (or core) made of soft ferromagnetic material with a small gap. The current conductor is passed through the ring and generates a magnetic field, which is concentrated and directed through the gap. The sensor is placed in the gap of the core and is able to measure the increased magnetic flux density more reliably. Figure 4: Current Measurement Application 14.2. Linear Position An additional application suitable for the MLX91207 is the detection of a relative linear position of a magnet-sensor system. A permanent magnet generates a magnetic field in its surrounding dependent on the magnetization type, the magnet material and geometry. The MLX91207 should be placed close to the magnet and the movement axis should be chosen in a way to get a linear function between flux density and movement. A possible solution would be a cylindrically shaped, axially magnetized magnet with the movement axis parallel to the sensor surface. The magnet provides a magnetic field, which is linear for a certain movement range, positive in one direction and negative in the other direction. The output signal of the sensor is directly proportional to the magnet position. +Xpos -Xpos Zpos Z Y X Figure 5: Linear Position Application REVISION 16 - APRIL/12 39010091207 Page 14 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 15. Recommended Application Diagrams 15.1. Resistor and Capacitor Values Part C1 Description Supply capacitor, EMI, ESD Value 10 - 220 Unit nF C2 C3 Regulator buffer capacitor, decoupling, EMI, ESD Decoupling, EMI, ESD 10 - 220 5 - 50 nF nF C4 R1 Decoupling, EMI, ESD Pull up or pull down resistor 5 - 50 10 - 30 (1) nF k Table16: Resistor and capacitor value (1) When OUTMODE=0 (not recommended in the application), capacitor C4 should be 1nF or less. 15.2. Pull down resistor for diagnostic low +5V 1 VDD TEMPOUT 8 MLX91207 C1 Temperature Output C3 2 VSS TEST 7 3 VDIG TEST 6 4 TEST OUT 5 C2 Analog Output C4 R1 GND Figure 6: Diagnostic low 15.3. Pull up resistor for diagnostic high +5V 1 VDD TEMPOUT 8 MLX91207 C1 Temperature Output C3 2 VSS TEST 7 3 VDIG TEST 6 4 TEST OUT 5 C2 R1 Analog Output C4 GND Figure 7: Diagnostic high REVISION 16 - APRIL/12 39010091207 Page 15 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 16. Standard information regarding manufacturability of Melexis products with different soldering processes Our products are classified and qualified regarding soldering technology, solderability and moisture sensitivity level according to following test methods: Reflow Soldering SMD's (Surface Mount Devices) IPC/JEDEC J-STD-020 Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices (classification reflow profiles according to table 5-2) EIA/JEDEC JESD22-A113 Preconditioning of Nonhermetic Surface Mount Devices Prior to Reliability Testing (reflow profiles according to table 2) Wave Soldering SMD's (Surface Mount Devices) and THD's (Through Hole Devices) EN60749-20 Resistance of plastic- encapsulated SMD's to combined effect of moisture and soldering heat EIA/JEDEC JESD22-B106 and EN60749-15 Resistance to soldering temperature for through-hole mounted devices Iron Soldering THD's (Through Hole Devices) EN60749-15 Resistance to soldering temperature for through-hole mounted devices Solderability SMD's (Surface Mount Devices) and THD's (Through Hole Devices) EIA/JEDEC JESD22-B102 and EN60749-21 Solderability For all soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature profile etc) additional classification and qualification tests have to be agreed upon with Melexis. The application of Wave Soldering for SMD's is allowed only after consulting Melexis regarding assurance of adhesive strength between device and board. Melexis is contributing to global environmental conservation by promoting lead free solutions. For more information on qualifications of RoHS compliant products (RoHS = European directive on the Restriction Of the use of certain Hazardous Substances) please visit the quality page on our website: http://www.melexis.com/quality.aspx 17. ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. REVISION 16 - APRIL/12 39010091207 Page 16 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 18. Package Information 18.1. SOIC8 Package Dimensions 1.27 TYP NOTES: All dimensions are in millimeters (anlges in degrees). * Dimension does not include mold flash, protrusions or gate burrs (shall not exceed 0.15 per side). ** Dimension does not include interleads flash or protrusion (shall not exceed 0.25 per side). *** Dimension does not include dambar protrusion. Allowable dambar protrusion shall be 0.08 mm total in excess of the dimension at maximum material condition. Dambar cannot be located on the lower radius of the foot. 3.81 5.84 3.99** 6.20** 4.80 4.98* 1.40 1.55 0.19 0.25 1.55 1.73 0 8 0.127 0.250 0.35 0.49*** 0.41 0.89 Figure 8: Package dimensions OUT/PWM TEST TEST TEMP OUT 18.2. SOIC8 Pin Out and Marking 8 Marking : Part Number MLX91207 (3 digits) Die Version (2 digits) 5 CA 207 207CA 123456 YYWW 123456 YY Lot number (6 digits) WW Week Date code (2 digits) Year Date code (2 digits) TEST VDIG VSS 4 VDD 1 Figure 9: Pin out and marking Note: the option code is not marked on the package. It can be found by reading back the EEPROM (See chapter 11.2.12) and on the tape-on-reel label information REVISION 16 - APRIL/12 39010091207 Page 17 of 20 MLX91207 High Speed Hall Sensor IC Datasheet SOIC8 Hall Plate Positioning (preliminary) 0.46 +/- 0.06 1.85 2.15 2.35 2.55 Figure 10: Hall Plate positioning (preliminary) REVISION 16 - APRIL/12 39010091207 Page 18 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 19. Related documents and toolsPackage Information 19.1. Related documents User Interface UI MLX91207 Description Product Specific Functions PSF MLX91207 Description PTC-04 Daughter Board DB-HALL-03 Data Sheet The latest version of these documents is available on the Melexis Softdist platform. Please contact your local sales office to request an account (see contact details on page 20). Non intrusive current sensing with MLX91207 application note MLX91207 for PDU solutions application note Calibrating the MLX91206/MLX91207 application note Shielding for Triaxis current sensors application note The latest version of these documents is available on the MLX91207 page on the Melexis website: http://www.melexis.com/Hall-Effect-Sensor-ICs/Special-Purpose-Hall-ICs/MLX91207-757.aspx 19.2. Related software MLX91207 Firmware MLX91207 Product Specific Functions (PSF) MLX91207 User Interface MLX PTC-04 Product Specific Functions MLX PTC-04 User Interface The latest version of these pieces of software is available on the Melexis Softdist platform. Please contact your local sales office to request an account (see contact details on page 25). 19.3. Related hardware PTC-04 Programmer for Melexis PTC devices PTC-04 Daughter Board DB-HALL-03 for MLX91207 REVISION 16 - APRIL/12 39010091207 Page 19 of 20 MLX91207 High Speed Hall Sensor IC Datasheet 20. Contact For the latest version of this document, go to our website at www.melexis.com. For additional information, please contact our Direct Sales team and get help for your specific needs: Europe, Africa Telephone: +32 13 67 04 95 Email : sales_europe@melexis.com Americas Telephone: +1 603 223 2362 Email : sales_usa@melexis.com Asia Email : sales_asia@melexis.com 21. Disclaimer The information furnished by Melexis herein ("Information") is believed to be correct and accurate. Melexis disclaims (i) any and all liability in connection with or arising out of the furnishing, performance or use of the technical data or use of the product(s) as described herein ("Product") (ii) any and all liability, including without limitation, special, consequential or incidental damages, and (iii) any and all warranties, express, statutory, implied, or by descriptio n, including warranties of fitness for particular purpose, non-infringement and merchantability. No obligation or liability shall arise or flow out of Melexis' rendering of technical or other services. The Information is provided "as is" and Melexis reserves the right to change the Information at any time and without notice. Therefore, before placing orders and/or prior to designing the Product into a system, users or any third party should obtain the latest version of the relevant information to verify that the information being relied upon is current. Users or any third party must further determine the suitability of the Product for its application, including the level of re liability required and determine whether it is fit for a particular purpose. The Information is proprietary and/or confidential information of Melexis and the use thereof or anything described by the In formation does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other intellectual property rights. This document as well as the Product(s) may be subject to export control regulations. Please be aware that export might require a prior authorization from competent authorities. The Product(s) are intended for use in normal commercial applications. Unless otherwise agreed upon in writing, the Product(s) are not designed, authorized or warranted to be suitable in applications requiring extended temperature range and/or unusual environmental requirements. High reliability applications, such as medical life-support or life-sustaining equipment are specifically not recommended by Melexis. The Product(s) may not be used for the following applications subject to export control regulations: the development, production, processing, operation, maintenance, storage, recognition or proliferation of 1) chemical, biological or nuclear weapons, or for the development, production, maintenance or storage of missiles for such weapons: 2) civil firearms, including spare parts or ammunition for such arms; 3) defense related products, or other material for military use or for law enforcement; 4) any applications that, alone or in combination with other goods, substances or organisms could cause serious harm to persons or g oods and that can be used as a means of violence in an armed conflict or any similar violent situation. The Products sold by Melexis are subject to the terms and conditions as specified in the Terms of Sale, which can be found at https://www.melexis.com/en/legal/termsand-conditions. This document supersedes and replaces all prior information regarding the Product(s) and/or previous versions of this document. Melexis NV (c) - No part of this document may be reproduced without the prior written consent of Melexis. (2016) ISO/TS 16949 and ISO14001 Certified REVISION 16 - APRIL/12 39010091207 Page 20 of 20