Triple Processor Supervisors ADM13307 FEATURES Triple supervisory circuits Supply voltage range of 2.0 V to 5.5 V Pretrimmed threshold options: 1.8 V, 2.5 V, 3.3 V, and 5 V Adjustable 0.6 V and 1.25 V voltage references Maximum supply current of 40 A 140 ms (minimum) reset timeout RESET valid from VDD 1.1 V Push-pull RESET and RESET outputs 8-lead, narrow body SOIC package Temperature range: -40C to +85C FUNCTIONAL BLOCK DIAGRAMS ADM13307-18 ADM13307-25 ADM13307-33 VDD 14k MR RESET SENSE1 R1 RESET SENSE2 R3 R4 GND APPLICATIONS 1.25V SENSE3 Figure 1. GENERAL DESCRIPTION The ADM13307 is a triple voltage supervisor designed to monitor up to three voltage levels in DSP and microprocessorbased systems. OSCILLATOR 06923-002 Supervising DSPs/microcontrollers Industrial and portable equipment Wireless systems Notebook/desktop computers RESET LOGIC + TIMER R2 ADM13307-4 ADM13307-5 VDD 14k The ADM13307-18, ADM13307-25, and ADM13307-33 models have two internally fixed thresholds and one externally programmable threshold via a resistor string. The ADM13307-4 and ADM13307-5 offer one internally fixed threshold and two externally programmable thresholds. See the Ordering Guide for a list of all available options. During power-up, RESET is asserted when the supply voltage exceeds 1.1 V. The device then monitors the SENSEv input pins and holds the RESET output low as long as the SENSEv pins remain below the rising threshold voltage, VIT+. Once the supplies monitored at the SENSEv inputs rise above their associated thresholds, the reset signal remains low for the reset timeout period before deasserting. Subsequently, if a voltage monitored by the SENSEv pins falls below its associated falling input threshold voltage, VIT-, the RESET output asserts. MR RESET SENSE1 R1 RESET LOGIC + TIMER R2 GND RESET SENSE2 0.6V OSCILLATOR SENSE3 06923-001 There are five models available, all of which feature a combination of internally pretrimmed undervoltage threshold options for monitoring 1.8 V, 2.5 V, 3.3 V, and 5 V supplies. There are also two adjustable input options with undervoltage thresholds of either 0.6 V or 1.25 V. Figure 2. The ADM13307 features both an active high RESET and an active low RESET output. The manual reset input of the ADM13307 can be used to initiate a reset by means of an external push button or logic signal. The ADM13307 is available in an 8-lead narrow body SOIC package. The device operates over the extended industrial temperature range of -40C to +85C. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2007 Analog Devices, Inc. All rights reserved. ADM13307 TABLE OF CONTENTS Features .............................................................................................. 1 Thermal Resistance .......................................................................6 Applications ....................................................................................... 1 ESD Caution...................................................................................6 General Description ......................................................................... 1 Pin Configuration and Function Descriptions..............................7 Functional Block Diagrams ............................................................. 1 Typical Performance Characteristics ..............................................8 Revision History ............................................................................... 2 Theory of Operation ...................................................................... 10 Specifications..................................................................................... 3 Input Configuration ................................................................... 10 Timing Requirements .................................................................. 5 Reset Output ............................................................................... 10 Switching Characteristics ............................................................ 5 Manual Reset (MR) .................................................................... 10 Functional Truth Table ................................................................ 5 Outline Dimensions ....................................................................... 11 Absolute Maximum Ratings............................................................ 6 Ordering Guide .......................................................................... 11 REVISION HISTORY 8/07--Revision 0: Initial Version Rev. 0 | Page 2 of 12 ADM13307 SPECIFICATIONS VDD = 2.0 V to 5.5 V, -40C TA +85C, unless otherwise noted. Table 1. ADM13307-18, ADM13307-25, and ADM13307-33 Parameter OPERATING VOLTAGE RANGE, VDD SUPPLY CURRENT, IDD INPUT CAPACITANCE, CI RESET, RESET Output High Level Output Voltage, VOH Min 2.0 Typ 10 VDD - 0.2 VDD - 0.4 VDD - 0.4 Low Level Output Voltage, VOL Power-Up Reset Voltage1 SENSE INPUTS Falling Input Threshold Voltage, VIT- 0.2 0.4 0.4 0.4 1.22 1.64 2.20 2.86 4.46 1.22 1.64 2.20 2.86 4.46 Hysteresis at SENSEv Inputs, VHYS INPUT VOLTAGE AT MR High Level, VIH Low Level, VIL 1.25 1.68 2.25 2.93 4.55 1.25 1.68 2.25 2.93 4.55 10 15 20 30 40 1 1.28 1.72 2.30 3.00 4.64 1.29 1.73 2.32 3.02 4.67 0.7 x VDD 0.3 x VDD 50 INPUT TRANSITION RISE AND FALL RATE AT MR HIGH LEVEL INPUT CURRENT, IH MR SENSE1 SENSE2 SENSE3 LOW LEVEL INPUT CURRENT, IL MR SENSEv Max 5.5 40 Unit V A pF Test Conditions/Comments VI = 0 V to VDD V V V V V V V IOH = -20 A IOH = -2 mA, VDD = 3.3 V IOH = -3 mA, VDD = 5.5 V IOL = 20 A IOL = 2 mA, VDD = 3.3 V IOL = 3 mA, VDD = 5.5 V IOL = 20 A, VDD 1.1 V V V V V V V V V V V mV mV mV mV mV TA = 0C to 85C TA = 0C to 85C TA = 0C to 85C TA = 0C to 85C TA = 0C to 85C TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C TA = -40C to +85C VIT- = 1.25 V VIT- = 1.68 V VIT- = 2.25 V VIT- = 2.93 V VIT- = 4.55 V V V ns/V -130 5 6 -180 8 9 +25 A A A nA MR = 0.7 x VDD, VDD = 5.5 V SENSE1 = VDD = 5.5 V SENSE2 = VDD = 5.5 V SENSE3 = VDD -430 -600 +25 A nA MR = 0 V, VDD = 5.5 V SENSE1, SENSE2, SENSE3 = 0 V -25 -25 The lowest supply voltage at which RESET becomes active. tr, VDD 15 s/V. Rev. 0 | Page 3 of 12 ADM13307 VDD = 2.0 V to 5.5 V, -40C TA +85C, unless otherwise noted. Table 2. ADM13307-4 and ADM13307-5 Parameter OPERATING VOLTAGE RANGE, VDD SUPPLY CURRENT, IDD INPUT CAPACITANCE, CI RESET, RESET Output High Level Output Voltage, VOH Min 2.0 Typ 10 VDD - 0.2 VDD - 0.4 VDD - 0.4 Low Level Output Voltage, VOL Power-Up Reset Voltage 1 SENSE INPUTS Falling Input Threshold Voltage, VIT- 0.2 0.4 0.4 0.4 0.5946 0.5952 2.23 2.90 0.6 0.6 2.25 2.93 0 20 30 Hysteresis at SENSEv Inputs, VHYS INPUT VOLTAGE AT MR High Level, VIH Low Level, VIL Max 5.5 40 0.6048 0.6048 2.29 2.98 0.7 x VDD 0.3 x VDD 50 INPUT TRANSITION RISE AND FALL RATE AT MR HIGH LEVEL INPUT CURRENT, IH MR SENSE1 SENSE2 SENSE3 LOW LEVEL INPUT CURRENT, IL MR SENSEv 1 Test Conditions/Comments V V V V V V V IOH = -20 A IOH = -2 mA, VDD = 3.3 V IOH = -3 mA, VDD = 5.5 V IOL = 20 A IOL = 2 mA, VDD = 3.3 V IOL = 3 mA, VDD = 5.5 V IOL = 20 A, VDD 1.1 V V V V V mV mV mV TA = -40C to +85C TA = -40C to +85C, 2.35 V VDD 5.5 V TA = -40C to +85C TA = -40C to +85C VIT- = 0.6 V VIT- = 2.25 V VIT- = 2.93 V VI = 0 V to VDD V V ns/V -130 5 -180 8 +50 +25 A A nA nA MR = 0.7 x VDD, VDD = 5.5 V SENSE1 = VDD = 5.5 V SENSE2 = VDD = 5.5 V SENSE3 = VDD -430 -600 +25 A nA MR = 0 V, VDD = 5.5 V SENSE1, SENSE2, SENSE3 = 0 V -50 -25 -25 Unit V A pF The lowest supply voltage at which RESET becomes active. tr, VDD 15 s/V. Rev. 0 | Page 4 of 12 ADM13307 TIMING REQUIREMENTS VDD = 2.0 V to 5.5 V, RL = 1 M, CL = 50 pF, TA = 25C. Table 3. ADM13307-18, ADM13307-25 and ADM13307-33 Parameter Pulse Width (tw) SENSEv MR Min Typ Max 6 100 Unit Test Conditions/Comments s ns VSENSEvL = VIT- - 0.3 V, VSENSEvH = VIT+ + 0.3 V VIH = 0.7 x VDD, VIL = 0.3 x VDD Unit Test Conditions/Comments s ns VSENSEvL = VIT- - 0.3 V, VSENSEvH = VIT+ + 0.3 V VIH = 0.7 x VDD, VIL = 0.3 x VDD Table 4. ADM13307-4 and ADM13307-5 Parameter Pulse Width (tw) SENSEv MR Min Typ Max 30 100 SWITCHING CHARACTERISTICS VDD = 2.0 V to 5.5 V, RL = 1 M, CL = 50 pF, TA = 25C Table 5. ADM13307-18, ADM13307-25 and ADM13307-33 Parameter Delay Time (td) Propagation Delay, High-to-Low, MR to RESET1/RESET (tPHL) Propagation Delay, Low-to-High, MR to RESET/RESET1 (tPLH) Propagation Delay, High-to-Low, SENSEv to RESET1/RESET (tPHL) Propagation Delay, Low-to-High, SENSEv to RESET/RESET1 (tPLH) 1 Min 140 Typ 200 200 200 1 1 Max 280 500 500 5 5 Unit ms ns ns s s Test Conditions/Comments VI(SENSEv) VIT+ + 0.2 V, MR 0.7 x VDD VI(SENSEv) VIT+ + 0.2 V, VIH 0.7 x VDD, VIL 0.3 x VDD VI(SENSEv) VIT+ + 0.2 V, VIH 0.7 x VDD, VIL 0.3 x VDD VIH = VIT+ + 0.3 V, VIL = VIT- - 0.3 V, MR 0.7 x VDD VIH = VIT+ + 0.3 V, VIL = VIT- - 0.3 V, MR 0.7 x VDD Min 140 Typ 200 200 200 30 30 Max 280 500 500 Unit ms ns ns s s Test Conditions/Comments VI(SENSEv) VIT+ + 0.2 V, MR 0.7 x VDD VI(SENSEv) VIT+ + 0.2 V, VIH 0.7 x VDD, VIL 0.3 x VDD VI(SENSEv) VIT+ + 0.2 V, VIH 0.7 x VDD, VIL 0.3 x VDD VIH = VIT+ + 0.3 V, VIL = VIT- - 0.3 V, MR 0.7 x VDD VIH = VIT+ + 0.3 V, VIL = VIT- - 0.3 V, MR 0.7 x VDD The reset timeout delay of 200 ms masks the propagation delay Table 6. ADM13307-4 and ADM13307-5 Parameter Delay Time (td) Propagation Delay, High-to-Low, MR to RESET1/RESET (tPHL) Propagation Delay, Low-to-High, MR to RESET/RESET1 (tPLH) Propagation Delay, High-to-Low, SENSEv to RESET1/RESET (tPHL) Propagation Delay, Low-to-High, SENSEv to RESET/RESET1 (tPLH) 1 The reset timeout delay of 200 ms masks the propagation delay. FUNCTIONAL TRUTH TABLE Table 7. MR L H H H H H H H H 1 SENSE1 > VIT1 X 0 0 0 0 1 1 1 1 1 SENSE2 > VIT2 X 0 0 1 1 0 0 1 1 1 SENSE3 > VIT3 X 0 1 0 1 0 1 0 1 1 X = don't care. Rev. 0 | Page 5 of 12 RESET RESET L L L L L L L L H H H H H H H H H L ADM13307 ABSOLUTE MAXIMUM RATINGS Table 8. Parameter Supply Voltage Range, VDD MR SENSE1, SENSE2, SENSE3 RESET, RESET Maximum Low Output Current Maximum High Output Current Input Clamp Current (VI < 0 V, VI > VDD) Output Clamp Current (VO < 0 V, VO > VDD) Operating Temperature Range Storage Temperature Range Lead Temperature Soldering (10 sec) Vapor Phase (60 sec) Infrared (15 sec) Rating -0.3 V to +6 V -0.3 V to VDD + 0.3 V (VDD + 0.3 V)VIT/VREF -0.3 V to +6 V 5 mA -5 mA 20 mA 20 mA -40C to +85C -65C to +150C 300C 215C 220C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL RESISTANCE Table 9. Package Type 8-Lead SOIC_N (R-8) ESD CAUTION Rev. 0 | Page 6 of 12 JA 206 Unit C/W ADM13307 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SENSE1 1 SENSE2 2 ADM13307 8 VDD 7 MR 6 RESET TOP VIEW GND 4 (Not to Scale) 5 RESET 06923-003 SENSE3 3 Figure 3.Pin Configuration Table 10. Pin Function Descriptions Pin No. 1 2 3 4 5 6 7 8 Mnemonic SENSE1 SENSE2 SENSE3 GND RESET RESET MR VDD Description Sense Voltage Input 1. Sense Voltage Input 2. Sense Voltage Input 3. Ground. Active Low Reset Output. Active High Reset Output. Manual Reset. Supply Voltage. Rev. 0 | Page 7 of 12 ADM13307 TYPICAL PERFORMANCE CHARACTERISTICS 0.6001 0.5999 0.5997 0.5995 0.5993 0.5991 0.5989 TA = 25C VDD = 2V 0.5987 MR = OPEN 0.5985 -40 -20 0 20 40 60 MR = OPEN 8 7 6 5 4 3 2 1 0 80 VDD = 5.5V 9 06923-007 MINIMUM PULSE DURATION AT SENSE, tW (s) 10 06923-004 0 100 200 FREE AIR TEMPERATURE, TA (C) 40 600 700 800 900 1000 20 15 10 5 0 SENSEv = 5.5V MR = OPEN TA = 25C -0.5 0 0.5 2.0 3.0 4.0 5.0 6.0 6.5 1.5 2.5 3.5 4.5 5.5 SUPPLY VOLTAGE, VDD (V) MR = OPEN 38 37 36 35 34 33 32 31 30 1.0 VDD = 5.5V 39 06923-017 MINIMUM PULSE DURATION AT SENSE, tW (s) 25 06923-005 SUPPLY CURRENT, IDD (A) 30 -5 0 100 200 300 400 500 600 700 800 900 1000 SENSE THRESHOLD OVERDRIVE (mV) Figure 5. Supply Current vs. Supply Voltage Figure 8. ADM13307-4 and ADM13307-5 Minimum Pulse Duration at Sense vs. Sense Threshold Overdrive 2.50 HIGH LEVEL OUTPUT VOLTAGE, VOH (V) 200 100 0 -100 -200 -300 -400 -500 -600 -700 VDD = 5.5V TA = 25C -900 -1.0 7.0 0 1.0 2.0 3.0 4.0 5.0 6.0 -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 INPUT VOLTAGE AT MR, VI (V) 06923-006 INPUT CURRENT, II (A) 500 40 35 -800 400 Figure 7. ADM13307-18, ADM13307-25 and ADM13307-33 Minimum Pulse Duration at Sense vs. Sense Threshold Overdrive Figure 4. Sense Threshold Voltage vs. Free Air Temperature at VDD -10 -1.0 300 SENSE THRESHOLD OVERDRIVE (mV) 2.00 1.50 1.00 -40C 0C +25C +85C 0.50 VDD = 2V MR = OPEN 0 0 -1 -2 -3 -4 -5 06923-008 INPUT THRESHOLD VOLTAGE, VIT (V) 0.6003 -6 HIGH LEVEL OUTPUT CURRENT, IOH (mA) Figure 9. High Level Output Voltage vs. High Level Output Current Figure 6. Input Current vs. Input Voltage at MR Rev. 0 | Page 8 of 12 ADM13307 1.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 VDD = 5.5V MR = OPEN 0.5 0 0 -10 -20 -30 -40 -50 -60 0.15 0.10 0.05 VDD = 2V MR = OPEN 1 2 3 4 5 06923-010 LOW LEVEL OUTPUT VOLTAGE, VOL (V) -40C 0C +25C +85C 0 0.6 0.5 0.4 0.3 0.2 VDD = 5.5V 0.1 MR = OPEN 0 5 10 15 20 25 30 35 40 45 50 55 60 Figure 12. Low Level Output Voltage vs. Low Level Output Current 0.25 0 0.7 LOW LEVEL OUTPUT CURRENT, IOL (mA) Figure 10. High Level Output Voltage vs. High Level Output Current 0.20 0.8 0 HIGH LEVEL OUTPUT CURRENT, IOH (mA) -40C 0C +25C +85C 0.9 06923-016 5.0 LOW LEVEL OUTPUT VOLTAGE, VOL (V) -40C 0C +25C +85C 5.5 06923-009 HIGH LEVEL OUTPUT VOLTAGE, VOH (V) 6.0 6 LOW LEVEL OUTPUT CURRENT, IOL (mA) Figure 11. Low Level Output Voltage vs. Low Level Output Current Rev. 0 | Page 9 of 12 ADM13307 THEORY OF OPERATION The ADM13307 devices are triple voltage supervisors designed to monitor up to three supplies and provide a reset signal to DSP and microprocessor-based systems. There are five models available, all of which feature a combination of internally pretrimmed undervoltage threshold options for monitoring 1.8 V, 2.5 V, 3.3 V, and 5 V supplies. There are also adjustable input options with threshold voltages of either 0.6 V or 1.25 V. ADM13307-18, ADM13307-25, and ADM13307-33 models have two internally fixed thresholds and one externally programmable threshold, via a resistor string, while the ADM13307-4 and ADM13307-5 offer one internally fixed threshold and two externally programmable thresholds via a resistor string. See the Ordering Guide for a list of all available options. RESET OUTPUT The reset outputs are guaranteed to be in the correct state for VDD down to 1.1 V. During power up, RESET is asserted when the supply voltage becomes greater than 1.1 V. Once the supplies monitored at the SENSEv pins rise above their associated threshold level, the RESET signal remains low for the reset timeout period before deasserting. Subsequently, if a supply monitored by the SENSEv pins falls below its associated threshold, the RESET output reasserts. SENSEv V(NOM) VIT- t RESET INPUT CONFIGURATION The SENSEv inputs are resistant to short power supply glitches. Do not allow unused SENSEv inputs to float or to be grounded, instead connect it to a supply voltage greater than its specified threshold voltage. Typically, the threshold voltage at an adjustable SENSEv input is either 0.6 V or 1.25 V. Refer to the Ordering Guide for details. For example, to monitor a voltage greater than 1.25 V, connect a resistor divider network to the device as depicted in Figure 13, where, R1 + R2 V MONITERED = 1.25 V R2 t 0 td td Figure 14. Reset Timing Diagram The ADM13307 features both an active-low push-pull RESET output and active-high push-pull RESET output. MANUAL RESET (MR) The ADM13307 features a manual reset input, which when driven low, asserts the reset output, as shown in Figure 15. When MR transitions from low to high, the reset remains asserted for the duration of the reset active timeout period before deasserting. An external push-button switch can be connected between MR and ground to allow the user to generate a reset. MR 1 MONITORED VOLTAGE R1 t 0 R2 RESET t 0 Figure 13. Setting the Adjustable Monitor td Figure 15. Manual Reset Timing Diagram Rev. 0 | Page 10 of 12 06923-015 06923-012 1 VREF = 1.25V 06923-013 1 The ADM13307 is powered through VDD. To increase noise immunity in noisy applications, place a 0.1 F capacitor between the VDD input and ground. ADM13307 OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890) 8 1 5 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 0.10 SEATING PLANE 6.20 (0.2441) 5.80 (0.2284) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) COMPLIANT TO JEDEC STANDARDS MS-012-A A CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. 012407-A 4.00 (0.1574) 3.80 (0.1497) Figure 16. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches). ORDERING GUIDE Model ADM13307-18ARZ 1 ADM13307-18ARZ-RL71 ADM13307-25ARZ1 ADM13307-25ARZ-RL71 ADM13307-33ARZ1 ADM13307-33ARZ-RL71 ADM13307-4ARZ1 ADM13307-4ARZ-RL71 ADM13307-5ARZ1 ADM13307-5ARZ-RL71 Nominal Input Voltage SENSE1 SENSE2 SENSE3 3.3 V 1.8 V Adj 2 3.3 V 1.8 V Adj2 3.3 V 2.5 V Adj2 3.3 V 2.5 V Adj2 5V 3.3 V Adj2 5V 3.3 V Adj2 3 2.5 V Adj Adj3 3 2.5 V Adj Adj3 3 3.3 V Adj Adj3 3.3 V Adj3 Adj3 Threshold Voltage (Typical) SENSE1 SENSE2 SENSE3 2.93 V 1.68 V 1.25 V 2.93 V 1.68 V 1.25 V 2.93 V 2.25 V 1.25 V 2.93 V 2.25 V 1.25 V 4.55 V 2.93 V 1.25 V 4.55 V 2.93 V 1.25 V 2.25 V 0.6 V 0.6 V 2.25 V 0.6 V 0.6 V 2.93 V 0.6 V 0.6 V 2.93 V 0.6 V 0.6 V 1 Z = RoHS Compliant Part. 1.25 V adjustable. External resistor divider determines the actual sense voltage. 3 0.6 V adjustable. External resistor divider determines the actual sense voltage. 2 Rev. 0 | Page 11 of 12 Temperature Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C Package Description 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N Package Option R-8 R-8 R-8 R-8 R-8 R-8 R-8 R-8 R-8 R-8 ADM13307 NOTES (c)2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06923-0-8/07(0) Rev. 0 | Page 12 of 12