ADCMP670_07

Dual Low Power 1.5% Comparator With 400 mV Reference ADCMP670 FEATURES 400 mV ± 1.5% threshold Supply range: 1.7 V to 5.5 V Low quiescent current: 6.5 μA typical Input range includes ground Internal hysteresis: 8.9 mV typical Low input bias current: ±10 nA maximum Open-drain outputs Supports wire-AND connections Input polarities: one inverting and one noninverting Low profile (1 mm) TSOT package Drop-in replacement for the LT6700-1 FUNCTIONAL BLOCK DIAGRAM VDD ADCMP670-1 +INA OUTA 400mV OUTB –INB 06493-001 GND Figure 1. APPLICATIONS Li-Ion monitoring Portable applications Hand-held instruments Window comparators LED/relay driving Optoisolator driving Control systems GENERAL DESCRIPTION The ADCMP670 consists of two low power, high accuracy, comparator and reference circuits in a 6-lead TSOT package. The internal 400 mV reference provides the ability to monitor low voltage supplies. The device operates on a supply voltage from 1.7 V to 5.5 V and draws only 6.5 μA typical, making it suitable for low power system monitoring and portable applications. Hysteresis is included in the comparators. The comparator outputs are open-drain and the output can be pulled up to any voltage up to 5.5 V. The output stage is guaranteed to sink greater than 5 mA over temperature. The ADCMP670 is currently available in one model, the ADCMP670-1. This model has one inverting input and one noninverting input, making it suitable for use as a window comparator. The device is suitable for portable, commercial, industrial, and automotive applications. 404 402 THRESHOLD VOLTAGE (mV) 1A 1B 2A 2B 400 398 396 394 392 390 388 TWO TYPICAL PARTS COMP A AND COMP B VDD = 5V –20 0 20 40 60 80 100 120 TEMPERATURE (°C) 06493-002 RISING INPUT FALLING INPUT 386 –40 Figure 2. Comparator Thresholds vs. Temperature 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 ©2007 Analog Devices, Inc. All rights reserved. ADCMP670 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 6 Thermal Resistance ...................................................................... 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ..............................................8 Application Information................................................................ 13 Comparators and Internal Reference ...................................... 13 Power Supply............................................................................... 13 Inputs ........................................................................................... 13 Outputs ........................................................................................ 13 Adding Hysteresis....................................................................... 13 Outline Dimensions ....................................................................... 14 Ordering Guide .......................................................................... 14 REVISION HISTORY 2/07—Revision 0: Initial Version Rev. 0 | Page 2 of 16 ADCMP670 SPECIFICATIONS VDD = 1.7 V to 5.5 V, TA = 25°C, unless otherwise noted. Table 1. Parameter THRESHOLDS 1 Rising Input Threshold Voltage Falling Input Threshold Voltage Hysteresis = VTH(R) – VTH(F) INPUT CHARACTERISTICS Input Bias Current OPEN-DRAN OUTPUTS Output Low Voltage 2 Output Leakage Current 3 DYNAMIC PERFORMANCE2, 4 High-to-Low Propagation Delay Low-to-High Propagation Delay Output Rise Time Output Fall Time POWER SUPPLY Supply Current 5 Min 394 395 386 387 7 Typ 400 400 391.1 391.1 8.9 0.01 4 140 130 0.01 0.01 10 8 0.5 0.07 5.7 6.5 10 11 Max 406 405 401 400 11 10 10 200 200 0.8 0.8 Unit mV mV mV mV mV nA nA mV mV μA μA μs μs μs μs μA μA Test Conditions/Comments VDD = 1.7 V VDD = 5.5 V VDD = 1.7 V VDD = 5.5 V VDD = 1.7 V, VIN = VDD VDD = 1.7 V, VIN = 0.1 V VDD = 1.7 V, IOUT = 3 mA VDD = 5.5 V, IOUT = 5 mA VDD =1.7 V, VOUT = VDD VDD =1.7 V, VOUT = 5.5 V VDD = 5.5 V, VOL = 400 mV VDD = 5.5 V, VOH = 0.9 × VDD VDD = 5.5 V, VO = (0.1 to 0.9) × VDD VDD = 5.5 V, VO = (0.1 to 0.9) × VDD VDD = 1.7 V VDD = 5.5 V 1 2 RL = 100 kΩ, VO = 2 V swing. 10 mV input overdrive. 3 VIN = 40 mV overdrive. 4 RL = 10 kΩ. 5 No load current. Rev. 0 | Page 3 of 16 ADCMP670 VDD = 1.7 V to 5.5 V, 0°C ≤ TA ≤ 70°C, unless otherwise noted. Table 2. Parameter THRESHOLDS 1 Rising Input Threshold Voltage Falling Input Threshold Voltage Hysteresis = VTH(R) – VTH(F) INPUT CHARACTERISTICS Input Bias Current OPEN-DRAIN OUTPUTS Output Low Voltage 2 Output Leakage Current 3 POWER SUPPLY Supply Current 4 Min 391 392.5 383.5 384.5 6.5 Typ Max 409 407.5 403.5 402.5 12.5 15 15 250 250 1 1 13 14 Unit mV mV mV mV mV nA nA mV mV μA μA μA μA Test Conditions/Comments VDD = 1.7 V VDD = 5.5 V VDD = 1.7 V VDD = 5.5 V VDD = 1.7 V, VIN = VDD VDD = 1.7 V, VIN = 0.1 V VDD = 1.7 V, IOUT = 3 mA VDD = 5.5 V, IOUT = 5 mA VDD =1.7 V, VOUT = VDD VDD =1.7 V, VOUT = 5.5 V VDD = 1.7 V VDD = 5.5 V 1 2 3 RL = 100 kΩ, VO = 2 V swing. 10 mV input overdrive. VIN = 40 mV overdrive. 4 No load. VDD = 1.7 V to 5.5 V, −40°C ≤ TA ≤ 85°C, unless otherwise noted. Table 3. Parameter THRESHOLDS 1 Rising Input Threshold Voltage Falling Input Threshold Voltage Hysteresis = VTH(R) – VTH(F) INPUT CHARACTERISTICS Input Bias Current OPEN-DRAIN OUTPUTS Output Low Voltage 2 Output Leakage Current 3 POWER SUPPLY Supply Current 4 Min 390 392 382.5 383.5 5.5 Typ Max 410 408 404.5 403.5 13.0 15 15 250 250 1 1 14 15 Unit mV mV mV mV mV nA nA mV mV μA μA μA μA Test Conditions/Comments VDD = 1.7 V VDD = 5.5 V VDD = 1.7 V VDD = 5.5 V VDD = 1.7 V, VIN = VDD VDD = 1.7 V, VIN = 0.1 V VDD = 1.7 V, IOUT = 3 mA VDD = 5.5 V, IOUT = 5 mA VDD =1.7 V, VOUT = VDD VDD =1.7 V, VOUT = 5.5 V VDD = 1.7 V VDD = 5.5 V 1 2 RL = 100 kΩ, VO = 2 V swing. 10 mV input overdrive. 3 VIN = 40 mV overdrive. 4 No load. Rev. 0 | Page 4 of 16 ADCMP670 VDD = 1.7 V to 5.5 V, −40°C ≤ TA ≤ 125°C, unless otherwise noted. Table 4. Parameter THRESHOLDS 1 Rising Input Threshold Voltage Falling Input Threshold Voltage Hysteresis = VTH(R) – VTH(F) INPUT CHARACTERISTICS Input Bias Current OPEN-DRAIN OUTPUTS Output Low Voltage 2 Output Leakage Current 3 POWER SUPPLY Supply Current 4 Min 390 392 381.5 381.05 2 Typ Max 411 410 405.5 404.5 13.5 45 45 250 250 1 1 16 17 Unit mV mV mV mV mV nA nA mV mV μA μA μA μA Test Conditions/Comments VDD = 1.7 V VDD = 5.5 V VDD = 1.7 V VDD = 5.5 V VDD = 1.7 V, VIN = VDD VDD = 1.7 V, VIN = 0.1 V VDD = 1.7 V, IOUT = 3 mA VDD = 5.5 V, IOUT = 5 mA VDD = 1.7 V, VOUT = VDD VDD = 1.7 V, VOUT = 5.5 V VDD = 1.7 V VDD= 5.5 V 1 2 3 RL = 100 kΩ, VO = 2 V swing. 10 mV input overdrive. VIN = 40 mV overdrive. 4 No load. Rev. 0 | Page 5 of 16 ADCMP670 ABSOLUTE MAXIMUM RATINGS Table 5. Parameter VDD +INA, −INB OUTA, OUTB Output Short Circuit Duration1 Input Current Operating Temperature Range Storage Temperature Range Lead Temperature Soldering (10 sec) Vapor Phase (60 sec) Infrared (15 sec) 1 THERMAL RESISTANCE Range −0.3 V to +6 V −0.3 V to +6 V −0.3 V to +6 V Indefinite −10 mA −40°C to +125°C −65°C to +150°C 300°C 215°C 220°C θJA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 6. Thermal Resistance Package Type 6-Lead TSOT θJA 200 Unit °C/W ESD CAUTION When the output is shorted indefinitely, the use of a heat sink may be required to keep the junction temperature within the absolute maximum ratings. 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. Rev. 0 | Page 6 of 16 ADCMP670 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUTA GND +INA 1 2 3 6 OUTB VDD –INB 06493-003 ADCMP670-1 TOP VIEW (Not to Scale) 5 4 Figure 3. Pin Configuration Table 7. Pin Function Descriptions Pin No. 1 2 3 4 5 6 Mnemonic OUTA GND +INA −INB VDD OUTB Description Open-Drain Output for Comparator A. Ground. Monitors analog input voltage on Comparator A. Connected to noninverting input. The other input of Comparator A is connected to a 400 mV reference. Monitors analog input voltage on Comparator B. Connected to inverting input. The other input of Comparator B is connected to a 400 mV reference. Power Supply Pin. Open-Drain Output for Comparator B. Rev. 0 | Page 7 of 16 ADCMP670 TYPICAL PERFORMANCE CHARACTERISTICS 60 VDD = 5V TA = 25°C 50 VDD = 5V TA = 25°C 40 50 PERCENT OF UNITS (%) 40 PERCENT OF UNITS (%) 06493-004 30 30 20 20 10 10 394 395 396 397 398 399 400 401 402 403 404 405 406 RISING INPUT THRESHOLD VOLTAGE (mV) 388 389 390 391 392 393 394 395 396 397 398 399 400 FALLING INPUT THRESHOLD VOLTAGE (mV) Figure 4. Distribution of Rising Input Threshold Voltage 35 30 Figure 7. Distribution of Falling Input Threshold Voltage 402 RISING INPUT THRESHOLD VOLTAGE (mV) VDD = 5V TA = 25°C PERCENT OF UNITS (%) 25 20 15 10 5 0 401 VDD VDD VDD VDD = 1.8V = 2.5V = 3.3V = 5.0V 400 399 06493-005 6.0 6.4 6.8 7.2 7.6 8.0 8.4 8.8 9.2 9.6 10.0 10.4 10.8 HYSTERESIS (mV) –20 0 20 40 60 80 100 120 TEMPERATURE (°C) Figure 5. Distribution of Hysteresis 404 Figure 8. Rising Input Threshold Voltage vs. Temperature 401 RISING INPUT THRESHOLD VOLTAGE (mV) RISING INPUT THRESHOLD VOLTAGE (mV) 402 1 2 3 4 FOUR TYPICAL PARTS VDD = 5V TA = –40°C 400 TA = +25°C 399 TA = +85°C 398 400 397 TA = +125°C 396 398 06493-006 –20 0 20 40 60 80 100 120 TEMPERATURE (°C) SUPPLY VOLTAGE (V) Figure 6. Rising Input Threshold Voltage vs. Temperature Figure 9. Rising Input Threshold Voltage vs. Supply Voltage Rev. 0 | Page 8 of 16 06493-009 396 –40 395 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 06493-008 398 –40 06493-007 0 0 ADCMP670 12.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 06493-010 1A 1B 2A 2B HYSTERESIS (mV) 12.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 VDD VDD VDD VDD = 1.8V = 2.5V = 3.3V = 5.0V HYSTERESIS (mV) FOUR TYPICAL PARTS VDD = 5V –20 0 20 40 60 80 100 120 –20 0 20 40 60 80 100 120 TEMPERATURE (°C) TEMPERATURE (°C) Figure 10. Hysteresis vs. Temperature 12 TA = +125°C 11 THRESHOLD SHIFT (mV) Figure 13. Hysteresis vs. Temperature 1 0 TA = +25°C TA = –40°C TA = +25°C TA = +85°C TA = +125°C 10 HYSTERESIS (mV) 9 8 7 6 5 4 1.7 TA = +85°C –1 –2 TA = –40°C –3 –4 06493-011 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) Figure 11. Hysteresis vs. Supply Voltage 10 Figure 14. Minimum Supply Voltage 50 NO LOAD CURRENT 9 SUPPLY CURRENT (mA) SUPPLY CURRENT (µA) 40 8 TA = +85°C 7 TA = +125°C 30 TA = +25°C 6 TA = –40°C 5 20 TA = +25°C TA = +85°C TA = +125°C TA = –40°C 0 0.5 1.0 SUPPLY VOLTAGE (V) 1.5 06493-015 10 2.2 2.7 3.2 3.7 4.2 4.7 5.2 SUPPLY VOLTAGE (V) 06493-012 4 1.7 0 Figure 12. Quiescent Supply Current vs. Supply Voltage Figure 15. Start-Up Supply Current Rev. 0 | Page 9 of 16 06493-014 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 –5 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 06493-013 4.0 –40 4.0 –40 ADCMP670 1000 TA = –40°C VDD VDD VDD VDD = 5.0V = 3.3V = 2.5V = 1.7V SUPPLY CURRENT (µA) 1000 TA = 25°C VDD VDD VDD VDD = 5.0V = 3.3V = 2.5V = 1.7V SUPPLY CURRENT (µA) 100 100 10 10 06493-016 0.01 0.1 1 10 100 0.01 0.1 1 10 100 OUTPUT SINK CURRENT (mA) OUTPUT SINK CURRENT (mA) Figure 16. Supply Current vs. Output Sink Current 1000 TA = 85°C VDD VDD VDD VDD = 5.0V = 3.3V = 2.5V = 1.7V INPUT BIAS CURRENT (nA) Figure 19. Supply Current vs. Output Sink Current 10k TA = +125°C 1k CURRENT IS GOING OUT OF THE DEVICE. VDD = 5V –0.3V < VIB < 0V SUPPLY CURRENT (µA) 100 100 TA = +85°C 10 TA = +25°C 10 1 TA = –40°C 0.01 0.1 1 10 100 06493-018 –0.2 –0.1 0 OUTPUT SINK CURRENT (mA) INPUT VOLTAGE (V) Figure 17. Supply Current vs. Output Sink Current 3 10 Figure 20. Below Ground Input Bias Current 1 INPUT BIAS CURRENT (nA) –1 TA = +125°C TA = +85°C TA = +25°C TA = –40°C INPUT BIAS CURRENT (nA) TA = +125°C 1 TA = +85°C –3 0.1 TA = +25°C TA = –40°C –5 CURRENT IS POSITIVE GOING INTO THE DEVICE. VDD = 5V 0V < VIB < 1V 06493-020 CURRENT IS GOING INTO THE DEVICE VDD = 5V VIB > 1V 0.6 0.8 1.0 1 2 3 INPUT VOLTAGE (V) 4 5 06493-021 –7 0 0.2 0.4 INPUT VOLTAGE (V) 0.01 Figure 18. Low Level Input Bias Current Figure 21. High Level Input Bias Current Rev. 0 | Page 10 of 16 06493-019 1 0.001 0.1 –0.3 06493-017 1 0.001 1 0.001 ADCMP670 1000 OUTPUT SATURATION VOLTAGE (mV) OUTPUT SATURATION VOLTAGE (mV) TA = 25°C VDD = 5.0V VDD = 3.3V VDD = 2.5V VDD = 1.8V 1000 TA = –40°C VDD = 5.0V VDD = 3.3V VDD = 2.5V VDD = 1.8V 100 100 10 10 06493-022 0.01 0.1 1 10 0.01 0.1 1 10 OUTPUT SINK CURRENT (mA) OUTPUT SINK CURRENT (mA) Figure 22. Output Saturation Voltage vs. Output Sink Current 1000 OUTPUT SATURATION VOLTAGE (mV) Figure 25. Output Saturation Voltage vs. Output Sink Current 80 VDD = 5V 70 SHORT-CIRCUIT CURRENT (mA) TA = 85°C VDD = 5.0V VDD = 3.3V VDD = 2.5V VDD = 1.8V TA = +25°C TA = –40°C 60 50 TA = +85°C 40 30 20 10 TA = +125°C 100 10 06493-024 0.01 0.1 1 10 0 2 OUTPUT VOLTAGE (V) 4 OUTPUT SINK CURRENT (mA) Figure 23. Output Saturation Voltage vs. Output Sink Current 70 60 SHORT-CIRCUIT CURRENT (mA) Figure 26. Output Short-Circuit Current 10 TA = 25°C VDD = 5.0V OUTPUT LEAKAGE CURRENT (nA) VDD = 5V TA = +125°C 50 40 30 20 10 0 VDD = 3.3V 1 TA = +85°C TA = +25°C 0.1 TA = –40°C VDD = 2.5V VDD = 1.8V 0.01 06493-026 0 2 OUTPUT VOLTAGE (V) 4 0 1 2 3 4 5 OUTPUT VOLTAGE (V) Figure 24. Output Short-Circuit Current Figure 27. Output Leakage Current Rev. 0 | Page 11 of 16 06493-027 0.001 06493-025 1 0.001 0 06493-023 1 0.001 1 0.001 ADCMP670 60 TA = 25°C LH NONINV LH INV HL NONINV HL INV RISE AND FALL TIMES (µs) 100 50 PROPAGATION DELAY (µs) VDD = 5V CL = 20pF TA = 25°C 10 RISE 1 40 30 20 0.1 FALL 0.01 0.1 10 06493-028 0 20 40 60 80 100 1 10 100 1000 INPUT OVERDRIVE (mV) OUTPUT PULL-UP RESISTOR (kΩ) Figure 28. Propagation Delay vs. Input Overdrive Figure 30. Rise and Fall Times vs. Output Pull-Up Resistor NON INV (OUTA) 2 INV (OUTB) 3 VIN (+INA, –INB) 1 CH1 50.0mV CH3 5.00V CH2 5.00V M20.0µs CH1 7mV Figure 29. Noninverting and Inverting Comparators Propagation Delay 06493-029 Rev. 0 | Page 12 of 16 06493-030 0 ADCMP670 APPLICATION INFORMATION The ADCMP670 is a dual low power comparator with a built-in 400 mV reference that operates from 1.7 V to 5.5 V. The comparator is 1.5% accurate with a built-in hysteresis of 8.9 mV. The outputs are open-drain, capable of sinking 40 mA. OUTPUTS The comparator outputs are open-drain and are also limited to the maximum specified VDD voltage range, regardless of the VDD voltage. These outputs are capable of sinking up to 40 mA. Outputs can be tied together to provide a window comparator with a single output. COMPARATORS AND INTERNAL REFERENCE Each comparator has one input available externally. Comparator A has a noninverting input and Comparator B has an inverting input available. The other comparator inputs are connected internally to the 400 mV reference. The rising input threshold voltage of the comparators is designed to be equal to that of the reference. ADDING HYSTERESIS To prevent oscillations at the output caused by noise or slowly moving signals passing the switching threshold, each comparator has built-in hysteresis of approximately 8.9 mV. Positive feedback can be used to increase hysteresis to the noninverting comparator. POWER SUPPLY The ADCMP670 is designed to operate from 1.7 V to 5.5 V. A 0.1 μF decoupling capacitor is recommended between VDD and GND. INPUTS The comparator inputs are limited to the maximum VDD voltage range. The voltage on these inputs can be above VDD but never above the maximum allowed VDD voltage. When adding a resistor string to the input, care must be taken when choosing resistor values. This is due to the fact that the input bias current will be in parallel with the bottom resistor of the string. This bottom resistor must therefore be chosen first to control the error introduced by this bias current. Rev. 0 | Page 13 of 16 ADCMP670 OUTLINE DIMENSIONS 2.90 BSC 6 5 4 1.60 BSC 1 2 3 2.80 BSC PIN 1 INDICATOR 0.95 BSC *0.90 0.87 0.84 1.90 BSC *1.00 MAX 0.20 0.08 8° 4° 0° 0.60 0.45 0.30 0.10 MAX 0.50 0.30 SEATING PLANE *COMPLIANT TO JEDEC STANDARDS MO-193-AA WITH THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS. Figure 31. 6-Lead Thin Small Outline Transistor Package [TSOT] (UJ-6) Dimensions shown in millimeters ORDERING GUIDE Model ADCMP670-1YUJZ-RL7 1 1 Temperature Range –40°C to +125°C Package Description 6-Lead Thin Small Outline Transistor Package [TSOT] Package Option UJ-6 Branding M97 Z = Pb-free part. Rev. 0 | Page 14 of 16 ADCMP670 NOTES Rev. 0 | Page 15 of 16 ADCMP670 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06493-0-2/07(0) Rev. 0 | Page 16 of 16