Comparators and Reference Circuits ADCMP350/ADCMP354/ADCMP356
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1 Data Sheet Comparators and Reference Circuits ADCMP35/ADCMP354/ADCMP356 FEATURES Comparators with.6 V on-chip references Output stages Open-drain active low (ADCMP35) Open-drain active high (ADCMP354) Push-pull active high (ADCMP356) High voltage (up to V) tolerance on VIN and open-drain output pins Low power consumption: 1 µa 1 na input bias current 15 mv hysteresis 5 µs propagation delay Specified over 4 C to +15 C temperature range 4-lead SC7 package APPLICATIONS Voltage detectors Microprocessor systems Computers Battery monitors Intelligent instruments Portable equipment FUNCTIONAL BLOCK DIAGRAMS ADCMP35 REF V IN V CC GND OUT (OD) Figure 1. ADCMP35 Functional Block Diagram V CC ADCMP354/ADCMP356 V IN OUT (OD/PP) REF GND Figure. ADCMP354/ADCMP356 Functional Block Diagram GENERAL DESCRIPTION The ADCMP35/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 V on the input of all devices and the output of the opendrain devices. High performance over the 4 C to +15 C temperature range makes them suitable for use in automotive and other thermally harsh applications, while low power consumption and space-efficient SC7 packaging make them ideal for battery-powered portable equipment. Table 1. Selection Table Reference Part No. Voltage (V) Input Connection Output ADCMP35.6 Inverting Open-drain ADCMP354.6 Noninverting Open-drain ADCMP356.6 Noninverting Push-pull Rev. E Document Feedback 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 916, Norwood, MA 6-916, U.S.A. Tel: Analog Devices, Inc. All rights reserved. Technical Support
2 ADCMP35/ADCMP354/ADCMP356 TABLE OF CONTENTS Features... 1 Applications... 1 Functional Block Diagrams... 1 General Description... 1 Revision History... Specifications... 3 Absolute Maximum Ratings... 4 ESD Caution... 4 Data Sheet Pin Configuration and Function Descriptions...5 Typical Performance Characteristics...6 Applications Information...9 Adding Hysteresis...9 Voltage Detector...9 Outline Dimensions... 1 Ordering Guide... 1 REVISION HISTORY 5/18 Rev. D to Rev. E Changes to Figure and Figure Changes to Ordering Guide /16 Rev. C to Rev. D Changes to Figure 13 Caption and Figure 14 Caption... 7 Updated Outline Dimensions /15 Rev. B to Rev. C Changes to Adding Hysteresis Section, Figure, and Figure Changes to Ordering Guide /11 Rev. A to Rev. B Deleted ADCMP35... Universal Changes to Adding Hysteresis Section, Figure, and Figure /9 Rev. to Rev. A Changes to Ordering Guide /4 Revision : Initial Version Rev. E Page of 1
3 Data Sheet ADCMP35/ADCMP354/ADCMP356 SPECIFICATIONS VCC = full operating range, TA = 4 C to +15 C, unless otherwise noted. Table. Parameter Min Typ Max Unit Test Conditions/Comments SUPPLY Operating Voltage Range VCC V VIN V Supply Current 1 15 µa VIN THRESHOLD VCC = 3.3 V Rising V TA = 4 C to +85 C V TA = 4 C to +15 C Falling V TA = 4 C to +85 C V TA = 4 C to +15 C INPUT BIAS CURRENT 1 na VIN =.6 V 17 µa VIN = V THRESHOLD TEMPERATURE COEFFICIENT 3 ppm/ C VIN TO OUT DELAY 5 µs VIN = VTH to (VTH 1 mv) OUT VOLTAGE Low.4 V VIN < VTH minimum, ISINK = 1. ma High.8 VCC V VIN > VTH maximum, ISOURCE = 5 µa, push-pull only OUTPUT TIME COUT = 15 pf Rise 3 ns Fall 45 ns OUTPUT LEAKAGE CURRENT 1 µa OUT = V, open-drain only Rev. E Page 3 of 1
4 ADCMP35/ADCMP354/ADCMP356 ABSOLUTE MAXIMUM RATINGS TA = 5 C, unless otherwise noted. Table 3. Parameter Rating VCC.3 V to +6 V VIN.3 V to +5 V OUT (Open-Drain).3 V to +5 V OUT (Push-Pull).3 V to (VCC +.3 V) Operating Temperature Range 4 C to +15 C Storage Temperature Range 65 C to +15 C θja Thermal Impedance 146 C/W Lead Temperature Soldering (1 sec) 3 C Vapor Phase (6 sec) 15 C Infrared (15 sec) C Data Sheet Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. ESD CAUTION Rev. E Page 4 of 1
5 Data Sheet ADCMP35/ADCMP354/ADCMP356 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS V IN 1 GND ADCMP35/ ADCMP354/ ADCMP V CC OUT 511- Figure 3. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 VIN Monitors Analog Input Voltage. Connected to inverting or noninverting input depending on the model number. GND Ground. 3 OUT Digital Output. Open-drain or push-pull options depending on the model number. 4 VCC Power Supply. Rev. E Page 5 of 1
6 ADCMP35/ADCMP354/ADCMP356 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS I CC (µa) T A +15 C T A +5 C T A +85 C T A 4 C SUPPLY CURRENT (µa) V CC (V) V IN (V) Figure 4. ICC vs. VCC over Temperature Figure 7. Supply Current vs. Input Voltage (VIN) T A = +5 C T A = +85 C V TRIP (mv) V TRIP TRIP RISING V TRIP TRIP FALLING IN LEAKAGE (µa) T A = +15 C T A = 4 C TEMPERATURE ( C) Figure 5. VIN Trip Threshold (VTRIP) vs. Temperature (VCC = 3.3 V) V IN (V) Figure 8. Input (IN) Leakage vs. VIN HYSTERESIS.8.7 HYSTERESIS (mv) T A = 5 C TEMPERATURE ( C) Figure 6. VIN Trip Hysteresis vs. Temperature V IN (V) Figure 9. VIN Leakage Current vs. VIN (VCC = 3.8 V) Rev. E Page 6 of 1
7 Data Sheet ADCMP35/ADCMP354/ADCMP T A = +15 C 1 T A = +5 C IN LEAKAGE (µa) T A = +85 C T A = +5 C T A = 4 C OUTPUT VOLTAGE (mv) 1 1 T A = +15 C T A = +85 C T A = 4 C V CC (V) OUTPUT SINK CURRENT (ma) Figure 1. Input (IN) Leakage vs. VCC (VIN = V) Figure 13. Output Voltage vs. Output Sink Current V TRIP (mv) V TRIP RISING V TRIP FALLING OUTPUT LOW VOLTAGE (mv) V CC (V) SUPPLY VOLTAGE (V) Figure 11. VTRIP vs. VCC Figure 14. Output Low Voltage vs. Supply Voltage (ISINK = 5 µa) HYSTERESIS (mv) HYSTERESIS FALL TIME (ns) RISE TIME 4 4 FALL TIME V CC (V) SUPPLY VOLTAGE (V) Figure 1. VIN Trip Hysteresis vs. VCC Figure 15. Fall Time vs. Supply Voltage Rev. E Page 7 of 1
8 ADCMP35/ADCMP354/ADCMP356 Data Sheet SHORT-CIRCUIT SINK CURRENT (ma) SUPPLY VOLTAGE (V) Figure 16. Short-Circuit Sink Current vs. Supply Voltage (VCC = 3.3 V, Push-Pull Only) CH1 = VIN CH = VOUT CH1 mv/div CH 1.V/DIV TIMEBASE: 1µs/DIV Figure 18. Propagation Delay Timing, 1 mv Overdrive CH1 = VIN PROPAGATION DELAY (µs) t PLH t PHL CH = VOUT INPUT OVERDRIVE (mv) Figure 17. Propagation Delay vs. Input Overdrive (VCC = 3.3 V, Push-Pull Only) CH1 1mV/DIV CH 1.V/DIV TIMEBASE: 1µs/DIV Figure 19. Propagation Delay Timing, 1 mv Overdrive Rev. E Page 8 of 1
9 Data Sheet APPLICATIONS INFORMATION ADDING HYSTERESIS 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). For the noninverting configuration shown in Figure, 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. The upper input threshold level is given by V IN_HI ( + ) VREF R1 R = R ADCMP35/ADCMP354/ADCMP356 VOLTAGE DETECTOR The ADCMP35/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 1 shows the typical configuration of the ADCMP354 for monitoring a supply to indicate that the voltage is above a certain level. V IN R1 ADCMP354 V CC = 5V OUT R PULLUP where VREF =.6 V, assuming RLOAD >> R, RPULLUP The lower input threshold level is given by V IN_LO ( ) VREF R1 + R + RPULLUP VCC R1 = R + R PULLUP The hysteresis is the difference between these voltage levels and is given by V HYS ( ) ( + ) V R1 R1 V V = R R + R REF REF CC PULLUP R V REF =.6V Figure 1. Voltage Detector Application V CC = 5V ADCMP354 R PULLUP V IN R1 V REF =.6V OUT R LOAD R 511- Figure. Noninverting Comparator Configuration with Added Hysteresis Rev. E Page 9 of 1
10 ADCMP35/ADCMP354/ADCMP356 Data Sheet OUTLINE DIMENSIONS PIN 1 INDICATOR BSC BSC BSC MAX COPLANARITY *.7.5 SEATING PLANE.18.1 *PACKAGE OUTLINE CORRESPONDS IN FULL TO EIAJ SC8 EXCEPT FOR WIDTH OF PIN AS SHOWN. Figure. 4-Lead Thin Shrink Small Outline Transistor Package [SC7] (KS-4) Dimensions shown in millimeters B ORDERING GUIDE Model 1 Temperature Range Package Description Package Option ADCMP35YKSZ-REEL7 4 C to +15 C 4-Lead Thin Shrink Small Outline Transistor Package [SC7] KS-4 M55 ADCMP354YKSZ-REEL7 4 C to +15 C 4-Lead Thin Shrink Small Outline Transistor Package [SC7] KS-4 M56 ADCMP356YKSZ-REEL7 4 C to +15 C 4-Lead Thin Shrink Small Outline Transistor Package [SC7] KS-4 M8V 1 Z = RoHS Compliant Part. Marking Code 4 18 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D511--5/17(E) Rev. E Page 1 of 1
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