GMR Switch Precision Digital Sensors GMR SwitchTM Precision Digital gital Sensors When GMR sensor elements are combined with digital on-board signal processing electronics, the result is the GMR Switch. The GMR Switch offers unmatched precision and flexibility in magnetic field sensing. The GMR Switch will accurately and reliably sense magnetic fields with less error than any other magnetic sensor on the market today. In addition, there is little shift in the magnetic field operate point of the GMR Switch over voltage and temperature extremes. This gives NVE's customer the ability to make a high precision, high tolerance magnetic sensing assembly. The GMR switch can operate over a wide range of magnetic fields, and is the most precise magnetic sensor on the market. It is the clear choice when a digital output signal is required of a magnetic sensor. Operate Point Error Band for Typical Magnetic Sensors (4.5V to 30V, -40C to +125C) Allegro 3141LLT (Hall Effect) 200 Honeywell SS441A (Hall Effect) Magnetic Operate Point (Gauss) 150 NVE AD023-00 (GMR) NVE AD022-00 (GMR) Honeywell 2SSP (AMR) 50 NVE Corporation (800) 467-7141 The GMR Switch Holds Tighter Operate Point Specifications Than Any Competing Product! NVE AD021-00 (GMR) 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com GMR Switch Precision Digital Sensors Quick Reference: GMR Switch Digital Sensors The following table lists some of NVE's most popular GMR Switch products and their key specifications: NVE AD004-02 NVE AD005-02 NVE AD021-00 NVE AD022-00 NVE AD024-00 NVE AD124-00 NVE AD621-00 Typical Magnetic Operate Point (Oe1) 20 40 20 40 28 28 20 Typical Magnetic Release Point (Oe1) 10 25 10 25 14 14 10 NVE AD824-00 28 18 NVE ADH025-00 11 5 Part Number Output Type2 Maximum Operation Temperature (C) Package Type3 Sink Sink Sink Sink Sink Source Sink + Source 2 Sinks + SCP Sink 125 125 125 125 125 125 125 SOIC8 SOIC8 MSOP8 MSOP8 MSOP8 MSOP8 MSOP8 125 MSOP8 150 MSOP8 Notes: 1. 1 Oersted (Oe) = 1 Gauss in air 2. Output Types: Sink = Up to 20mA current sink Source = Up to 20mA current source SCP = Short Circuit Protection available for external transistor 3. See Appendix for package dimensions Note on Availability of Products NVE keeps about 25 of the most popular types of GMR Switch products in stock at our manufacturing facility. However, because there are over 100 different varieties of GMR Switch parts, some part numbers may require a 6 to 8 week lead time before production quantities are available. Please contact NVE for further information. NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com GMR Switch Product Selection Guide GMR Switch Product Selection Guide NVE's GMR Switch is available in a wide range of packaging, output type, and magnetic trigger field varieties. The purpose of this selection guide is to explain the different output and packaging options, as well as to provide information on how to specify the correct part number when ordering. All NVE GMR Switch product part numbers follow the same general form. As shown below, the first "x" in the part number specifies output type and available voltage regulator output, the next two x's specify trigger field and direction of sensitivity, and the last pair specify the package type. The following sections define these variations in detail. NVE ADxxx-xx Output Type and Available Regulator Package Type Trigger Field, Direction of Sensitivity, Low Voltage Operation Output Type and Available Regulator The first numeric digit of the part number NVE ADxxx-xx specifies the output type, and the availability of a regulated voltage supply on a separate pin. The following four output types are available: 20 mA Current Sink 20 mA Current Source Separate 20 mA Sink and Source Two Separate 20 mA Sinks All outputs turn ON when the magnetic field is applied. An output that turns OFF when the magnetic field is applied is available as a custom product; please consult NVE. Some of NVE's GMR Switches also feature a regulated supply voltage available external to the part on a separate pin. This regulator provides a 5.8V reference capable of supplying up to 3 mA of drive current. This regulated output may be used to run an LED or other low power device. NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com GMR Switch Product Selection Guide In addition to these options, NVE recently introduced a GMR Switch that has provisions for shutting down an external power transistor in case a short circuit is detected. This is useful in applications where the finished sensor assembly must be "bulletproof," or immune to improper connection. The following table defines the first digit in the NVE AD part number: NVE AD x xx-xx Number 0 1 2 3 4 5 6 Meaning 20mA Current Sink 20 mA Current Source Separate 20mA Current Sink and 20mA Current Source Two Separate 20mA Current Sinks 20mA Current Sink + Regulated Output Voltage 20 mA Current Source + Regulated Output Voltage Separate 20mA Current Sink and 20mA Current Source + Regulated Output Voltage Two Separate 20mA Current Sinks + Regulated Output Voltage Two Separate 20mA Current Sinks + Regulated Output Voltage + Short Circuit Detection and Shut-Off Separate 20mA Current Sink and 20mA Current Source + Regulated Output Voltage + Short Circuit Detection and Shut-Off 7 8 9 Trigger Field, Direction of Sensitivity, Low Voltage Operation The second and third numeric digits of the part number NVE ADxxx-xx specify the magnetic trigger field and direction of sensitivity of the part. Five different magnetic trigger fields are available for the GMR Switch: - 10 Gauss 20 Gauss 28 Gauss 40 Gauss 80 Gauss (10 Oe, 1.0 mT, 0.8 kA/m) (20 Oe, 2.0 mT, 1.6 kA/m) (28 Oe, 2.8 mT, 2.23 kA/m) (40 Oe, 4.0 mT, 3.2 kA/m) (80 Oe, 8.0 mT, 6.4 kA/m) Other magnetic trigger field levels ranging up to 250 Gauss are available on a custom basis; please contact NVE. NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com GMR Switch Product Selection Guide In addition to defining the magnetic operate point, these two digits are used to define the direction of sensitivity and optional low voltage operation. The GMR Switch can be ordered in Standard Axis or Cross Axis directions of sensitivity; for definitions please see NVE AD Series Sensitivity Direction and Pin Configuration later in this section. NVE also makes a GMR Switch with the on-chip voltage regulator bypassed. This limits the voltage range of the part, but allows it to operate at voltages as low as 3.0V. The following table defines the second and third digits in the NVE AD part number: NVE AD x xx-xx Number 04 05 06 20 21 22 23 24 25 81 82 83 84 Meaning 20 Gauss OP, Standard Direction of Sensitivity 40 Gauss OP, Standard Direction of Sensitivity 80 Gauss OP, Standard Direction of Sensitivity 28 Gauss OP, Standard Direction of Sensitivity 20 Gauss OP, Cross Axis Direction of Sensitivity 40 Gauss OP, Cross Axis Direction of Sensitivity 80 Gauss OP, Cross Axis Direction of Sensitivity 28 Gauss OP, Cross Axis Direction of Sensitivity 10 Gauss OP, Cross Axis Direction of Sensitivity (ADH Series Only; see page 38) 20 Gauss OP, Cross Axis Direction of Sensitivity, Low Volt 40 Gauss OP, Cross Axis Direction of Sensitivity, Low Volt 80 Gauss OP, Cross Axis Direction of Sensitivity, Low Volt 28 Gauss OP, Cross Axis Direction of Sensitivity, Low Volt Note: For parts that operate at 10 Gauss, see the following section describing the NVE ADH Series sensors. NVE AD Series Sensitivity Direction and Pin Configuration Pin configuration is for the NVE AD Series GMR Switches is given in the following diagrams. In addition, most GMR Switch parts are available with a choice of two directions of sensitivity. "Standard" direction of sensitivity is defined as the direction parallel to the edge of the package containing the pins. "Cross-Axis" direction of NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com GMR Switch Product Selection Guide sensitivity is defined as the direction perpendicular to the edge of the package containing the pins. Pin configuration and sensitivity direction for the SOIC8 and MSOP8 packages are defined in the drawings below: NVE AD0xx-xx through NVE AD7xx-xx, NVE ADH0xx-xx: Standard Axis N/C Source Sink(2) VCC VCC N/C* Source Sink(1) N/C* Cross Axis Ground Vreg Sink(2) Vreg Sink(1) N/C Ground Note: In the case of a Standard Axis Part with the Vreg pin option, Sink(1) will appear at the pin labelled N/C* NVE AD8xx-xx through NVE AD9xx-xx: Cap2 VCC AD8xx-xx Cap Sink(2) Cross Axis Cap2 VCC AD9xx-xx ShortH Cap Sink(1) Source Vreg Ground Ground ShortL Sink Cross Axis Vreg Pin configuration and sensitivity direction for the AD0xx-10 TDFN6 package are defined in the drawing below: AD0xx-10 N/C Out N/C Test N/C Cross Axis N/C NVE Corporation (800) 467-7141 Ground Ground AD0xx-10 VCC Standard Axis VCC 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com N/C Out GMR Switch Product Selection Guide Package Type NVE GMR Switches are available in three different packages: an SOIC 8 pin package, an MSOP 8 pin small outline package, and a TDFN 6 pin ultra-miniature package. Package drawings are shown in the Appendix. The following table defines the last two digits in the NVE AD part number: NVE AD x xx-xx Number 00 02 101 Package Type MSOP8 SOIC8 TDFN6 1 Note : At this time, the TDFN6 package is only available in AD0xx-10 configuration. In addition to these three package types, NVE offers a custom version of the MSOP8 package for the NVE AD024-00 part. In this version, the BD012-00, all three connections are made on one side of the package, and the pins on the other side of the package are clipped off flush with the body of the package. This allows the user to position the sensing element as close to the edge of a circuit board or assembly as possible. A pinout of this package is shown below: VCC BD012-00 N/C* Cross Axis Out Ground The maximum length of the clipped leads is 0.30mm, leading to an overall package length of 4.25mm, as compared to 4.90mm for the normal MSOP8 package. This part is available in tape and reel format only. Other versions of the GMR Switch may be available in this package configuration on a special order basis. Please contact NVE for further information. NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com GMR Switch Product Selection Guide Characteristics Over Voltage and Temperature Typical Operate Points (OP) and Release Points (RP) AD004 and AD005 Applied Field (Oersteds) 50 Ambient Temperature = 25C 40 AD005 OP 30 AD005 RP 20 AD004 OP AD004 RP 10 0 5 10 15 20 25 30 Supply Voltage Operate Point (OP) and Release Point (RP) Variation Over Temperature Applied Field (Oe) 50 40 AD005 OP 30 AD005 RP 20 AD004 OP AD004 RP 10 0 -40 0 40 80 120 Temperature (C) NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com GMR Switch Product Selection Guide Temperature (C) Operating Temperature Derating Curves for SOIC8, MSOP8, and TDFN6 Packages in Free Air 130 SOIC8 120 110 100 MSOP8 and TDFN6 90 80 5 10 15 20 25 30 Supply Voltage (V) Output Current Derating Curve Maximum Output Current (mA) 25 20 (Continues to 30V) 15 10 4.5 6 7.5 9 10.5 Supply Voltage (V) NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Web: www.nve.com Email: info@nve.com 11/15/02 AD0xx-xx to AD7xx-xx AD0xx-xx to AD7xx-xx Features: Precision Magnetic Operate Point Excellent Temperature and Voltage Performance Digital Outputs Frequency Response 0 to 250KHz Optional Voltage Regulator Output Optional Low Voltage Version Small, Low Profile Surface Mount Packages Applications: General Digital Position Sensing Pneumatic Cylinder Position Sensing Speed Sensing Description: The NVE AD0xx-xx to AD7xx-xx GMR Switches are digital output magnetometers that offers precision operate points over all temperature and input voltage conditions. They are available with magnetic trigger fields from 20 to 80 Gauss, and four different output configurations, making them an extremely flexible and user-friendly design. Functional Block Diagram (NVE AD0xx-xx to NVE AD7xx-xx, Except NVE AD08x-xx): Voltage Regulator (5.8V) Current Sinking Output 4.5V to 30V GMR Bridge NVE Corporation (800) 467-7141 Comparator 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com AD0xx-xx to AD7xx-xx Functional Block Diagram (NVE AD08x-xx): 3.0V to 6.0V Current Sinking Output GMR Bridge Comparator Output Characteristic as a Function of Magnetic Field, for AD024-00 GMR Switch Output Current, mA (10V Supply, 1K Load Resistor) 12 10 ON OFF 8 OFF ON 6 4 2 0 -40 -20 0 20 40 Applied Magnetic Field (Oe) Magnetic Characteristics: Typical Operate Minimum Maximum Operate Minimum 1,2 Point Operate Point Point Differential 20 15 25 5 28 21 34 5 40 30 50 5 80 60 100 5 Note: All Values in Oersteds (Oe); 1 Oe = 1 Gauss in Air NVE Corporation (800) 467-7141 Maximum 1,2 Differential 14 20 25 35 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com AD0xx-xx to AD7xx-xx Electrical Specifications (NVE AD0xx-xx to NVE AD7xx-xx, except NVE AD08x-xx): Parameter 4 Supply Voltage Supply Current, Single Output 3 Current Sinking Output 3 Current Sourcing Output Output Leakage Current Sinking Output Saturation Voltage Sourcing Output Saturation Voltage 6 Regulated Output Voltage Regulated Output Current Symbol VCC ICC IO IO ILEAK VOL VOH VREG IREG Min 4.5 2.5 0 0 3.5 Max 30 4.5 20 20 10 0.4 VCC-2.5 6.2 3.0 Units V mA 3 mA 3 mA A V V V mA Test Condition Operating Output Off, VCC=12V Operating Operating Output Off, VCC=12V Output On, IOL=20mA Output On, IOL=20mA Operating Operating Units V mA mA 3 mA A V Test Condition Operating Output Off, VCC=3V Output Off, VCC=6V Operating Output Off, VCC=5V Output On, IOL=20mA Electrical Specifications (NVE AD08x-xx): Parameter Supply Voltage Supply Current, Single Output Supply Current, Single Output 2 Current Sinking Output Output Leakage Current Sinking Output Saturation Voltage Symbol VCC ICC ICC IO ILEAK VOL Min 3.0 0.7 1.7 0 Max 6.0 1.2 2.2 20 10 0.4 Absolute Maximum Ratings (NVE AD0xx-xx to NVE AD7xx-xx, except NVE AD08x-xx): Parameter Supply Voltage Reverse Battery Voltage Current Sinking Output Off Voltage Current Sourcing Output Off Voltage Current Sinking Reverse Output Voltage Current Sourcing Reverse Output Voltage Continuous Output Current 4 Operating Temperature Range Storage Temperature Range 5 Magnetic Field NVE Corporation (800) 467-7141 Symbol VCC VRBP I0 TA TS H Min -40 -65 Max 33 -33 33 0 -0.5 -0.5 24 125 150 None Units V V V V V V mA C C Oe 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com AD0xx-xx to AD7xx-xx Absolute Maximum Ratings (NVE AD08x-xx): Parameter Supply Voltage Reverse Battery Voltage Current Sinking Output Off Voltage Current Sinking Reverse Output Voltage Continuous Output Current 4 Operating Temperature Range Storage Temperature Range 5 Magnetic Field Notes: 1. 2. 3. 4. 5. 6. Symbol VCC VRBP I0 TA TS H Min -40 -65 Max 7 -0.5 33 -0.5 24 125 150 None Units V V V V mA C C Oe Differential = Operate Point - Release Point Minimum Release Point for AD0xx-xx to AD7xx-xx, except AD08x-xx, = 5 Oe. Minimum Release Point for AD08x-xx = 3.5 Oe. Output current must be limited by a series resistor. Exceeding absolute maximum continuous output current ratings will result in damage to the part. See the figure in the GMR Switch Product Selection Guide for an output current derating curve. Thermal power dissipation for the packages used by NVE is 240C/Watt for the SOIC8 package, and 320C/Watt for the MSOP8 and TDFN6 packages. See the Figure on Ambient Temperature vs. Supply Voltage for derating information. Heat sinking the parts by attaching them to a PCB improves temperature performance. There is no maximum magnetic field that will cause damage to the device. If VCC>6.6V, VREG=5.8V. If VCC<6.6V, VREG= VCC - 0.9V. NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com AD8xx-xx to AD9xx-xx AD8xx-xx to AD9xx-xx Features: Short Circuit Detection and Shutoff of External Power Transistor Precision Magnetic Operate Point Excellent Temperature and Voltage Performance Digital Outputs Frequency Response 0 to 250KHz Small, Low Profile Surface Mount Packages Applications: General Digital Position Sensing Pneumatic Cylinder Position Sensing Speed Sensing Description: NVE AD8xx and AD9xx GMR Switches are designed specifically for use with an external high current output transistor in industrial control environments. These parts provide the same precise magnetic performance NVE's GMR Switch is known for, with the additional functionality of short circuit protection (SCP) for the output stage of the circuit. The protection circuit is designed to shut off the output stage when a short circuit condition exists; after a time interval specified by the user, the circuit turns back on. If the short circuit condition still exists, the output stage is again shut off and the cycle repeats. The use of this sensor, along with external reverse battery protection and overvoltage protection, results in a "bulletproof" sensor assembly. A functional block diagram of this sensor is shown below: VDD Vreg Sink1 GMR Bridge Comparator Comparator ShortH Sink2 Cap2 SCP Turn On Delay Cap Off State Timer Ground These digital sensors with SCP are available for use with current sinking or current sourcing outputs, in a range of magnetic field operate points. They are provided in an NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com AD8xx-xx to AD9xx-xx MSOP8 package, with the cross-axis direction of sensitivity. An LED driver to indicate the presence of the magnetic field is also standard on these products. An SOIC8 package and standard axis sensitivity are available on a special order basis. Typical Circuit Configuration: VDD RBIAS1 Pin 1 Cap2 VDD Cap ShortH RSHORT AD821-00 Sink2 Sink1 Ground Vreg RBIAS2 Output RLED t2 Cap t1 Cap VDD Pin 1 Cap2 VDD Cap ShortL AD921-00 Source Sink1 Ground Vreg Output t2 Cap t1 Cap RLED RBIAS2 RBIAS1 NVE Corporation (800) 467-7141 RSHORT 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com AD8xx-xx to AD9xx-xx Output Transistor Current in Short Circuit mode: Current (mA) Output Transistor Current in Short Circuit 300 200 100 t Notes: 1. t1 2 Time The t2 Cap is used to delay the startup of the SCP circuitry, in order to avoid triggering the SCP circuitry on normal startup transients: see t2 on the graph above. Typical value is 16V, 0.001F, for a 35s delay. 2. The t1 Cap is used to set the "Off" time of the SCP circuitry; see t1 on the graph above. Typical value is 16V, 0.01F, for a 15ms Off time. 3. The voltage across RSHORT is monitored by the IC; if this voltage exceeds 145mV (typical), the SCP circuitry is activated. Typical value of RSHORT is 0.47 Ohms, 1/16 watt. This will result in SCP circuitry turning on at about 300mA of output current. 4. RBIAS1 and RBIAS2 are used to bias the output transistor. Typical values for RBIAS1 and RBIAS2 are 16K and 3K, respectively, to supply 1mA drive to the output transistor. 5. RLED is sized for whatever LED current is required by the user; maximum of 3 mA. Magnetic Characteristics: Typical Operate Point 20 28 40 80 Minimum Operate Point 15 21 30 60 Maximum Operate Point 25 32.5 50 100 Minimum 1,2 Differential 5 5 5 5 Maximum 1,2 Differential 14 15 25 35 Note: All Values in Oersteds (Oe); 1 Oe = 1 Gauss in Air NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com AD8xx-xx to AD9xx-xx Electrical Specifications: Parameter 4 Supply Voltage Supply Current 2 Current Sinking Output 2 Current Sourcing Output Output Leakage Current Sinking Output Saturation Voltage Sourcing Output Saturation Voltage 6 Regulated Output Voltage Regulated Output Current Short High Voltage Short Low Voltage Symbol VCC ICC IO IO ILEAK VOL VOH VREG IREG ShortH ShortL Min 4.5 1.75 0 0 3.5 0.12 0.12 Max 30 3.5 2.0 2.0 10 0.4 VCC-2.0 6.0 3.0 0.17 0.17 Units V mA 3 mA 3 mA A V V V mA V V Test Condition Operating Output Off, VCC=12V Operating Operating Output Off, VCC=12V Output On, IOL=2mA Output On, IOL=2mA Operating Operating Output On Output On Absolute Maximum Ratings: Parameter Supply Voltage Reverse Battery Voltage Current Sinking Output Off Voltage Current Sourcing Output Off Voltage Current Sinking Reverse Output Voltage Current Sourcing Reverse Output Voltage Continuous Output Current 4 Operating Temperature Range Storage Temperature Range 5 Magnetic Field Symbol VCC VRBP I0 TA TS H Min -40 -65 Max 33 -0.5 33 0 -0.5 -0.5 5 125 135 None Units V V V V V V mA C C Oe Notes: 1. Differential = Operate Point - Release Point 2. Minimum Release Point for AD8xx-xx to AD9xx-xx = 5 Oe. 3. Output current must be limited by a series resistor. Exceeding absolute maximum continuous output current ratings will result in damage to the part. 4. Thermal power dissipation for the packages used by NVE is 240C/Watt for the SOIC8 package, and 320C/Watt for the MSOP8 and TDFN6 packages. See the Figure on Ambient Temperature vs. Supply Voltage for derating information. Heat sinking the parts by attaching them to a PCB improves temperature performance. 5. There is no maximum magnetic field that will cause damage to the device. 6. If VCC>6.6V, VREG=5.8V. If VCC<6.6V, VREG= VCC -0.9V. NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com ADH0xx-xx Features: Precision Low Field Magnetic Operate Point Excellent Temperature and Voltage Performance Digital Output Frequency Response 0 to 250KHz Small, Low Profile Surface Mount Packages Applications: Low Field Digital Position Sensing Pneumatic Cylinder Position Sensing Speed Sensing Description: The NVE ADH0xx Series GMR Switch uses NVE's high sensitivity, high temperature GMR material to provide a very low magnetic field operate point. It offers the same precision operate points over all temperature and input voltage conditions as our other GMR Switch products. It is available in standard form as the NVE ADH025-00 with a magnetic trigger field of 10 Gauss, a current sinking output, and a cross axis configuration. Custom versions with trigger fields ranging from 6 to 40 Gauss, and different output options and sensitivity directions could be manufactured for specific customer requirements; please contact NVE for details. Note: Functional Block Diagram for the NVE ADH0xx-xx Series sensors is the same as for the NVE AD0xx-xx sensors. Output Current, mA (10V Supply, 1K Load Resistor) Output Characteristic as a Function of Magnetic Field, ADH025-00 12 10 8 ON OFF OFF ON 6 4 2 0 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 Applied Magnetic Field (Oe) NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com Magnetic Characteristics, NVE ADH025-00: Typical Operate Minimum Maximum Minimum 1 Point Operate Point Operate Point Differential 10 8 12 3.5 Note: All Values in Oersteds (Oe); 1 Oe = 1 Gauss in Air Maximum 1 Differential 10 Electrical Specifications, NVE ADH0xx-xx: Parameter 4 Supply Voltage Supply Current, Single Output 3 Current Sinking Output Output Leakage Current Sinking Output Saturation Voltage Symbol VCC ICC IO ILEAK VOL Min 4.5 3.0 0 Max 30 6.0 20 10 0.4 Units V mA 3 mA A V Test Condition Operating Output Off, VCC=12V Operating Output Off, VCC=12V Output On, IOL=20mA Absolute Maximum Ratings: Parameter Supply Voltage Reverse Battery Voltage Current Sinking Output Off Voltage Current Sourcing Output Off Voltage Current Sinking Reverse Output Voltage Current Sourcing Reverse Output Voltage Continuous Output Current 4 Operating Temperature Range Storage Temperature Range 5 Magnetic Field Notes: 1. Symbol VCC VRBP I0 TA TS H Min -40 -65 Max 33 -33 33 0 -0.5 -0.5 24 125 150 None Units V V V V V V mA C C Oe Differential = Operate Point - Release Point 2. Minimum Release Point for ADH0xx-xx = 2.0 Oe. 3. Output current must be limited by a series resistor. Exceeding absolute maximum continuous output current ratings will result in damage to the part. See the figure in the GMR Switch Product Selection Guide for an output current derating curve. 4. Thermal power dissipation for the packages used by NVE is 240C/Watt for the SOIC8 package, and 320C/Watt for the MSOP8 and TDFN6 packages. See the Figure on Ambient Temperature vs. Supply Voltage for derating information. Heat sinking the parts by attaching them to a PCB improves temperature performance. 5. There is no maximum magnetic field that will cause damage to the device. NVE Corporation (800) 467-7141 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA Email: info@nve.com 11/15/02 Web: www.nve.com