Comparators and Reference Circuits ADCMP350/ADCMP354/ADCMP356 FEATURES FUNCTIONAL BLOCK DIAGRAM VCC ADCMP350 REF OUT (OD) VIN 05112-001 Comparators with 0.6 V on-chip references Output stages Open-drain active low (ADCMP350) Open-drain active high (ADCMP354) Push-pull active high (ADCMP356) High voltage (up to 22 V) tolerance on VIN and open-drain output pins Low power consumption: 10 µA 10 nA input bias current 15 mV hysteresis 5 µs propagation delay Specified over −40°C to +125°C temperature range 4-lead SC70 package GND Figure 1. ADCMP350 Functional Block Diagram VCC ADCMP354/ADCMP356 VIN OUT (OD/PP) REF Voltage detectors Microprocessor systems Computers Battery monitors Intelligent instruments Portable equipment 05112-021 APPLICATIONS GND Figure 2. ADCMP354/ADCMP356 Functional Block Diagram GENERAL DESCRIPTION The ADCMP350/ADCMP354/ADCMP356 are comparator and reference circuits suitable for use in general-purpose applications. The high voltage input and output structures allow voltages of up to 22 V on the input of all devices and the output of the opendrain devices. High performance over the −40°C to +125°C temperature range makes them suitable for use in automotive and other thermally harsh applications, while low power consumption and space-efficient SC70 packaging make them ideal for battery-powered portable equipment. Table 1. Selection Table Part No. ADCMP350 ADCMP354 ADCMP356 Reference Voltage (V) 0.6 0.6 0.6 Input Connection Inverting Noninverting Noninverting Output Open-drain Open-drain Push-pull Rev. B 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. 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ADCMP350/ADCMP354/ADCMP356 TABLE OF CONTENTS Features .............................................................................................. 1 Pin Configuration and Function Descriptions..............................5 Applications ....................................................................................... 1 Typical Performance Characteristics ..............................................6 Functional Block Diagram .............................................................. 1 Applications Information .................................................................9 General Description ......................................................................... 1 Adding Hysteresis..........................................................................9 Revision History ............................................................................... 2 Voltage Detector ............................................................................9 Specifications..................................................................................... 3 Outline Dimensions ....................................................................... 10 Absolute Maximum Ratings ............................................................ 4 Ordering Guide .......................................................................... 10 ESD Caution .................................................................................. 4 REVISION HISTORY 4/11—Rev. A to Rev. B Deleted ADCMP352 .......................................................... Universal Changes to Adding Hysteresis Section, Figure 20, and Figure 21 ............................................................................................ 9 11/09—Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 10 10/04—Revision 0: Initial Version Rev. B | Page 2 of 12 ADCMP350/ADCMP354/ADCMP356 SPECIFICATIONS VCC = full operating range, TA = −40°C to +125°C, unless otherwise noted. Table 2. Parameter SUPPLY VCC Operating Voltage Range VIN Operating Voltage Range Supply Current VIN THRESHOLD RISING VIN THRESHOLD FALLING Min 2.25 0 0.579 0.579 0.564 0.564 INPUT BIAS CURRENT THRESHOLD TEMPERATURE COEFFICIENT VIN TO OUT DELAY OUT VOLTAGE LOW OUT VOLTAGE HIGH OUTPUT RISE TIME OUTPUT FALL TIME OUTPUT LEAKAGE CURRENT Typ 10 0.6 0.6 0.585 0.585 10 170 30 5 Max Unit 5.5 22 15 0.621 0.624 0.606 0.609 V V µA V V V V nA µA ppm/°C µs V V 0.4 0.8 × VCC 30 45 1 Rev. B | Page 3 of 12 ns ns µA Test Conditions/Comments VCC = 3.3 V, TA = −40°C to +85°C VCC = 3.3 V, TA = −40°C to +125°C VCC = 3.3 V, TA = −40°C to +85°C VCC = 3.3 V, TA = −40°C to +125°C VIN = 0.6 V VIN = 22 V VIN = VTH to (VTH − 100 mV) VIN < VTH minimum, ISINK = 1.2 mA VIN > VTH maximum, ISOURCE = 500 µA, Push-pull only COUT = 15 pF COUT = 15 pF OUT = 22 V, open-drain only ADCMP350/ADCMP354/ADCMP356 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 3. Parameter VCC VIN OUT (Open-Drain) OUT (Push-Pull) Operating Temperature Range Storage Temperature Range θJA Thermal Impedance, SC70 Lead Temperature Soldering (10 sec) Vapor Phase (60 sec) Infrared (15 sec) Rating −0.3 V to +6 V −0.3 V to +25 V −0.3 V to +25 V −0.3 V to (VCC + 0.3 V) −40°C to +125°C −65°C to +150°C 146°C/W 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. ESD CAUTION 300°C 215°C 220°C Rev. B | Page 4 of 12 ADCMP350/ADCMP354/ADCMP356 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 4 VCC 1 ADCMP350/ ADCMP354/ ADCMP356 GND 2 3 OUT 05112-002 VIN Figure 3. Pin Configuration Table 4. Pin Function Descriptions Pin No. 1 2 3 4 Mnemonic VIN GND OUT VCC Description Monitors Analog Input Voltage. Connected to inverting or noninverting input depending on the model number. Ground. Digital Output. Open-drain or push-pull options depending on the model number. Power Supply. Rev. B | Page 5 of 12 ADCMP350/ADCMP354/ADCMP356 TYPICAL PERFORMANCE CHARACTERISTICS 20 11.0 18 10.5 TA +125°C TA +85°C 16 TA +25°C SUPPLY CURRENT (µA) 10.0 ICC (µA) 9.5 9.0 TA –40°C 8.5 8.0 14 12 10 8 6 4 7.5 05112-003 VCC (V) 0 0 180 660 160 640 140 620 VTRIP TRIP RISING 600 VTRIP TRIP FALLING 560 65 80 95 110 125 TEMPERATURE (°C) TA = +125°C 0 2 4 6 8 10 12 14 16 18 20 22 VIN (V) Figure 8. Input Leakage vs. Input Voltage (VIN) 1.0 18 0.9 16 0.8 12 10 8 6 0.7 0.6 TA = 25°C 0.5 0.4 0.3 4 0.2 2 0.1 –25 –10 5 20 35 50 65 80 95 TEMPERATURE (°C) 110 125 0 0 Figure 6. VIN Trip Hysteresis vs. Temperature 0.3 0.6 0.9 1.2 1.5 1.8 VIN (V) 2.1 2.4 2.7 3.0 Figure 9. VIN Leakage Current vs. VIN Voltage (VCC = 3.8 V) Rev. B | Page 6 of 12 3.3 05112-019 VIN LEAKAGE (µA) HYSTERESIS 05112-005 HYSTERESIS (mV) 22 60 20 0 –40 20 TA = +85°C Figure 5. VIN Trip Threshold vs. Temperature (VCC = 3.3 V) 14 18 0 05112-004 50 16 TA = –40°C 40 35 14 80 20 20 12 100 520 5 10 TA = +25°C 120 540 –10 8 05112-007 IN LEAKAGE (µA) VTRIP (mV) 200 680 –25 6 Figure 7. Supply Current vs. Input Voltage (VIN) 700 500 –40 4 VIN (V) Figure 4. ICC vs. VCC over Temperature 580 2 05112-006 2 7.0 2.25 2.55 2.85 3.15 3.45 3.75 4.05 4.35 4.65 4.95 5.25 5.55 ADCMP350/ADCMP354/ADCMP356 10000 200 190 TA = +25°C TA = +125°C 1000 OUTPUT VOLTAGE (mV) 180 IN LEAKAGE (µA) 170 160 150 140 TA = +85°C TA = +25°C TA = –40°C 130 TA = +85°C 100 TA = +125°C TA = –40°C 10 1 120 05112-008 VCC (V) 0.1 0.01 0.1 10 1 OUTPUT SINK CURRENT (mA) Figure 10. Input Leakage vs. Supply Voltage, VCC (VIN = 22 V) 05112-010 110 100 2.25 2.55 2.85 3.15 3.45 3.75 4.05 4.35 4.65 4.95 5.25 5.55 Figure 13. Output Voltage vs. Output Sink Current (ISINK = 500 mA) 700 120 680 OUTPUT LOW VOLTAGE (mV) 660 VTRIP (mV) 640 620 VTRIP RISING 600 580 VTRIP FALLING 560 540 100 80 60 40 20 VCC (V) 0 2.25 2.40 2.70 3.00 3.30 3.60 3.90 4.20 4.50 4.80 5.20 5.50 05112-009 500 2.25 2.55 2.85 3.15 3.45 3.75 4.05 4.35 4.65 4.95 5.25 5.55 SUPPLY VOLTAGE (V) Figure 14. Output Low Voltage vs. Supply Voltage (ISINK = 500 mA) 200 18 180 16 160 14 140 FALL TIME (ns) 20 12 HYSTERESIS 10 8 120 100 80 6 60 4 40 2 20 RISE TIME 0 2.25 2.55 2.85 3.15 3.45 3.75 4.05 4.35 4.65 4.95 5.25 5.55 VCC (V) 0 2.25 2.40 2.70 3.00 3.30 3.60 3.90 4.20 4.50 4.80 5.20 5.50 SUPPLY VOLTAGE (V) Figure 15. Fall Time vs. Supply Voltage Figure 12. VIN Trip Hysteresis vs. VCC Rev. B | Page 7 of 12 05112-012 FALL TIME 05112-020 HYSTERESIS (mV) Figure 11. VIN Trip Threshold vs. VCC 05112-011 520 ADCMP350/ADCMP354/ADCMP356 100 1 80 CH1 = VIN 70 60 50 40 30 20 CH2 = VOUT 10 0 2.25 2.40 2.70 3.00 3.30 3.60 3.90 4.20 4.50 4.80 5.20 5.50 SUPPLY VOLTAGE (V) CH1 20mV/DIV CH2 1.00V/DIV TIMEBASE: 10µs/DIV 05112-015 2 05112-013 SHORT-CIRCUIT SINK CURRENT (mA) 90 Figure 18. Propagation Delay Timing, 10 mV Overdrive Figure 16. Short-Circuit Sink Current vs. Supply Voltage (VCC = 3.3 V, Push-Pull Only) 25 PROPAGATION DELAY (µs) 20 1 CH1 = VIN tPLH 15 10 tPHL 5 CH2 = VOUT 10 20 30 40 50 60 70 80 90 INPUT OVERDRIVE (mV) 100 110 120 130 CH1 100mV/DIV 05112-014 0 Figure 17. Propagation Delay vs. Input Overdrive (VCC = 3.3 V, Push-Pull Only) Rev. B | Page 8 of 12 CH2 1.00V/DIV TIMEBASE: 10µs/DIV Figure 19. Propagation Delay Timing, 100 mV Overdrive 05112-016 2 ADCMP350/ADCMP354/ADCMP356 APPLICATIONS INFORMATION ADDING HYSTERESIS VOLTAGE DETECTOR To prevent oscillations at the output caused by noise or slowly moving signals passing the switching threshold, positive feedback can be used to add hysteresis to the noninverting parts (ADCMP354 and ADCMP356). The ADCMP350/ADCMP354/ADCMP356 can be used to monitor voltages, such as battery monitoring or threshold detectors. Using a resistor divider at the input to select the appropriate trip voltage, the comparator can be configured to give a logic output when the input passes that threshold. Figure 21 shows the typical configuration of the ADCMP354 for monitoring a supply to indicate that the voltage is above a certain level. For the noninverting configuration shown in Figure 20, two resistors are used to create different switching thresholds, depending on whether the input signal is increasing or decreasing in magnitude. When the input voltage is increasing, the threshold is above VREF, and when it is decreasing, the threshold is below VREF. VCC = 5V The upper input threshold level is given by VIN_HI = VREF (R1 + R2 + RPULLUP ) − VCC R1 ADCMP354 R2 + RPULLUP VREF = 0.6V R1 The lower input threshold level is given by 05112-023 R2 VREF (R1 + R2 ) R2 Figure 21. Voltage Detector Application The hysteresis is the difference between these voltage levels and is given by ∆VIN = VCC R1 R2 + RPULLUP VCC = 5V ADCMP354 VREF = 0.6V RPULLUP OUT RLOAD R1 R2 05112-022 VIN OUT VIN where VREF = 0.6 V, assuming RLOAD >> R2, RPULLUP V IN_LO = RPULLUP Figure 20. Noninverting Comparator Configuration with Added Hysteresis Rev. B | Page 9 of 12 ADCMP350/ADCMP354/ADCMP356 OUTLINE DIMENSIONS 2.20 1.80 4 1 0.65 BSC 3 2.40 1.80 2 0.50 BSC 1.00 0.80 0.40 0.10 1.10 0.80 0.10 MAX COPLANARITY 0.10 0.30 0.15 *0.70 0.50 SEATING PLANE 0.18 0.10 *PACKAGE OUTLINE CORRESPONDS IN FULL TO EIAJ SC82 EXCEPT FOR WIDTH OF PIN 2 AS SHOWN. 0.30 0.10 072809-A 1.35 1.15 Figure 22. 4-Lead Thin Shrink Small Outline Transistor Package [SC70] (KS-4) Dimensions shown in millimeters ORDERING GUIDE Model 1 ADCMP350YKS-REEL7 ADCMP350YKSZ-REEL7 ADCMP354YKS-REEL7 ADCMP354YKSZ-REEL7 ADCMP356YKS-REEL7 ADCMP356YKSZ-REEL7 1 Temperature Range –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C Package Description 4-Lead Thin Shrink Small Outline Transistor Package [SC70] 4-Lead Thin Shrink Small Outline Transistor Package [SC70] 4-Lead Thin Shrink Small Outline Transistor Package [SC70] 4-Lead Thin Shrink Small Outline Transistor Package [SC70] 4-Lead Thin Shrink Small Outline Transistor Package [SC70] 4-Lead Thin Shrink Small Outline Transistor Package [SC70] Z = RoHS Compliant Part. Rev. B | Page 10 of 12 Package Option KS-4 KS-4 KS-4 KS-4 KS-4 KS-4 Branding M0Z M55 M13 M56 M15 M8V ADCMP350/ADCMP354/ADCMP356 NOTES Rev. B | Page 11 of 12 ADCMP350/ADCMP354/ADCMP356 NOTES ©2004–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05112-0-4/11(B) Rev. B | Page 12 of 12