ADVANCED LINEAR DEVICES, INC. ALD2331A/ALD2331B/ALD2331 DUAL PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN OUTPUT DRIVER GENERAL DESCRIPTION APPLICATIONS The ALD2331A/ ALD2331B/ ALD2331 is a monolithic high performance dual precision voltage comparator built with advanced silicon gate EPAD(R) CMOS technology intended for high precision analog applications. The ALD2331A/ALD2331B/ALD2331 offers ultra-low input offset voltages and currents at its input pre-amplifier, precision voltage comparator and high-current output driver integrated on-chip, in one industry standard pinout 8 Lead PDIP or SOIC package. Primary features include: very high typical input impedance of 1012 ; low input bias current of 10pA; fast response time of 750ns with only 10mV input step signal; very low power dissipation of 55A per comparator; and single +5V or dual 5V power supply operation; and 50 mA open drain output drivers. * High source impedance voltage comparison circuits * MOSFET driver * Dual limit window comparator * Power supply voltage monitor * Photo-detector sensor circuit * Relay or LED driver * Oscillators * Battery operated instruments * Remote signal detection The input voltage range includes ground, making this comparator ideal for low level signal detection with high source impedance. The outputs are open-drain configurations, allowing maximum application flexibility, such as wired-OR connection and various different output loads. An external pull-up resistor is required for each output, although the value of the pull-up resistor can vary over a wide range in order to suit the application needs. The outputs can be connected to a higher external voltage than V+. PRODUCT FEATURES * Fanout of 30 LS TTL loads * Guaranteed to drive 200 loads * Low supply current of 55A typical * Pinout of LM193 industry standard voltage comparators * Extremely low input bias currents-10pA typical * Virtually eliminates source impedance effects * Low operating supply voltage of 3V to 10.6V * Single +5V and dual supply 5V operation * High speed for both large and small level signals -- 300ns typical for TTL inputs * CMOS, NMOS and TTL compatible * Wired-OR open drain outputs * High output sink current - typically 50mA * Low supply current spikes BENEFITS * Simple precision reference voltage setting * On-chip input pre-amplifier and output buffers * Precision voltage comparison without preamplifier * Eliminate need for second power supply * Wide range of pull-up resistor values PIN CONFIGURATION OUT 1 1 8 V+ -IN 1 2 7 OUT 2 +IN 1 3 6 -IN 2 GND 4 5 +IN 2 TOP VIEW PAL, SAL PACKAGE BLOCK DIAGRAM ORDERING INFORMATION (8) V+ INVERTING INPUT -IN 1 (2) 0C to +70C Operating Temperature Range * 0C to +70C 8-Pin Small Outline Package (SOIC) 8-Pin Plastic Dip Package ALD2331A SAL ALD2331B SAL ALD2331 SAL ALD2331A PAL ALD2331B PAL ALD2331 PAL (1) OUT 1 NONINVERTING INPUT +IN 1 (3) V+ INVERTING INPUT -IN 2 (6) (7) OUT 2 NONINVERTING INPUT +IN 2 (5) (4) GND * Contact factory for industrial temperature range (c) 2008 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com ABSOLUTE MAXIMUM RATINGS Supply voltage, V+ Differential input voltage range Power dissipation Operating temperature range PAL, SAL package Storage temperature range Lead temperature, 10 seconds +10.6V -0.3V to V+ +0.3V 600 mW 0C to +70C -65C to +150C +260C OPERATING ELECTRICAL CHARACTERISTICS TA = 25C V+ = +5V unless otherwise specified 2331A Parameter Symbol Min Supply Voltage V+ 3 Supply Current IS Typ 110 Voltage Gain AVD Input Offset Voltage VOS 0.2 Input Offset Current1 IOS Input Bias Current1 IB Common Mode Input 2 Voltage Range VICR Low Level Sink Output Voltage VOL Low Level Sink Output Current IOL High Level Sink Output Leakae Curret Response Time 2 Common Mode Rejection Ratio Power Supply Rejection Ratio Notes: 1 2 50 Min 10 3 180 Typ 110 150 50 2331 Max Min 10 3 180 150 Typ 110 50 Max Unit 10 V 180 A 150 RLOAD 1.5K 1.0 1.0 2.0 mV 0.01 20 0.01 20 0.01 20 pA 0.01 20 0.01 20 0.01 20 pA V+ -1.5 V 0.4 V 0.15 0.4 50 IL 0.01 tRP 1.1 0.15 24 20 V+ -1.5 -0.3 0.4 50 0.01 -0.3 0.15 24 20 50 0.01 20 No Load Two Comparators RLOAD 15K 0.5 V+ -1.5 Test Conditions V/mV 0.5 -0.3 24 2331B Max ISINK = 12mA VINPUT = 1V Differential mA VOL = 1.0 V SINK OUTPUT ON nA VOUT = 5.0 V SINK OUTPUT OFF 1.1 1.1 s RL = 5.1K, CL = 15pF 5mV Input Step/ 5mV Overdrive tRP 2.4 2.4 2.4 s RL = 5.1K ,CL =15pF 1mVInput Step/ 1mV Overdrive tRP 600 600 600 ns tRP 300 300 300 ns RL = 5.1K, CL = 15pF 100mV Input Step/ 5mV Overdrive RL = 5.1K ,CL =15pF TTL level Input Step CMRR 80 80 80 dB VINPUT = 0V to 2.5V PSRR 75 75 75 dB V+ = 4V to 5V Consists of junction leakage currents Sample test parameter Advanced Linear Devices ALD2331A/ALD2331B ALD2331 TYPICAL PERFORMANCE CHARACTERISTICS COMMON - MODE VOLTAGE REFERRED TO SUPPLY VOLTAGE COMMON - MODE VOLTAGE LIMITS (V) TRANSFER FUNCTION OUTPUT VOLTAGE (V) +5.0 TA = 25C 0.0 -5.0 -2.5 VS = 2.5 V V+ -0.5 -1.0 0.5 V-0.5 +2.5 0.0 -55 -25 25 50 75 100 125 TEMPERATURE (C) SUPPLY CURRENT vs.TEMPERATURE SUPPLY CURRENT vs. SUPPLY VOLTAGE 200 V+ = +5V No Load Two Comparators 160 180 SUPPLY CURRENT (A) 180 140 120 100 80 No Load Two Comparators 160 TA = -550C 140 120 TA = 250C 100 80 60 TA = 1250C 40 20 0 60 -55 -25 0 25 50 75 100 0 125 2 LOW LEVEL OUTPUT VOLTAGE (V) 1000 V+ = +5V 100 10 1 -25 0 25 50 75 6 8 10 12 LOW LEVEL OUTPUT VOLTAGE vs. TEMPERATURE INPUT BIAS CURRENT vs. TEMPERATURE 0 -55 4 SUPPLY VOLTAGE (V) AMBIENT TEMPERATURE (C) INPUT BIAS CURRENT (pA) 0 DIFFERENTIAL INPUT VOLTAGE (mV) 200 SUPPLY CURRENT (A) 0.5 100 125 0.5 ISINK = 12mA VINPUT = 1V Differential 0.4 V+ = +3.5V 0.3 V+ = +5V 0.2 0.1 V+ = +10V 0.0 -55 -25 0 25 50 75 100 125 AMBIENT TEMPERATURE (C) 0 AMBIENT TEMPERATURE ( C) Advanced Linear Devices ALD2331A/ALD2331B ALD2331 TYPICAL PERFORMANCE CHARACTERISTICS 2.0 1.6 RL = 5.1K + V = +2.5V 1.2 0.8 0.4 0.0 V+ = +5V -0.4 -0.8 -1.2 -1.6 -2.0 -55 -25 0 25 50 COMMON MODE REJECTION RATIO vs. TEMPERATURE COMMON MODE REJECTION MODE (dB) INPUT OFFSET VOLTAGE (mV) INPUT OFFSET VOLTAGE vs. TEMPERATURE 75 100 90.0 + V = +5V RL = 5.1K 85.0 80.0 75.0 70.0 65.0 60.0 125 -55 -25 AMBIENT TEMPERATURE (C) 3.0 0 V = +5V 2.5 TA = 125 C TA = 850C 2.0 TA = 250C 1.5 TA = -250C 1.0 0.5 TA = -550C 0.0 0 15 30 45 75 60 100.0 VOH = V+ 75 100 125 TA = 1250C TA = 850C 1.0 0.1 TA = 250C 0.0 3 POWER SUPPLY REJECTION RATIO vs.TEMPERATURE 4 5 6 7 8 9 10 OUTPUT OFF-STATE VOLTAGE (V) 11 RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES 90.0 6.0 V+ = +5V RL = 5.1K OUTPUT VOLTAGE (V) POWER SUPPLY REJECTION RATIO (dB) 50 10.0 OUTPUT SINK CURRENT (mA) 85.0 25 OUTPUT OFF-STATE VOLTAGE vs. OUTPUT LEAKAGE CURRENT OUTPUT LEAKAGE CURRENT (nA) OUTPUT SATURATION VOLTAGE (V) SATURATION VOLTAGE vs. SINK CURRENT + 0 AMBIENT TEMPERATURE (C) 80.0 75.0 70.0 65.0 5.0 RL = 5.1K CL = 15pF Input Step 50mV 4.0 20mV 3.0 2.0 10mV 5mV 2mV 1mV 1.0 0.0 60.0 -55 -25 0 25 50 75 100 AMBIENT TEMPERATURE (0C) 125 0 V+ = +5V TA = 25 C -1.0 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 TIME (S) Advanced Linear Devices ALD2331A/ALD2331B ALD2331 TYPICAL PERFORMANCE CHARACTERISTICS RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES OUTPUT LOW VOLTAGE vs. SUPPLY VOLTAGE 6.0 OUTPUT VOLTAGE (V) 1mV 4.0 RL = 5.1K CL = 15pF Input Step 3.0 2.0 20mV 5mV 10mV 1.0 2mV 50mV 0.0 + V = +5V TA = 250C -1.0 OUTPUT LOW VOLTAGE (V) 0.6 5.0 TA = 25C IOL= 12mA 0.5 0.4 0.3 0.2 0.1 0.0 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 2 4 6 8 SUPPLY VOLTAGE (V) TIME (S) 12 10 TYPICAL APPLICATIONS PRECISION SINGLE SUPPLY VOLTAGE VOLTAGE COMPARATOR WITH COMPARATOR WITH DIRECT RELAY DRIVER COMPLEMENTARY OUTPUTS V+ + Q +5 +5 5VRELAY VR - VIN + VREF VIN + Q - VOLTAGE COMPARATOR VOLTAGE COMPARATOR WITH SINGLE WITH +/-5V SUPPLY AND +5V RELAY DRIVE SUPPLY AND OUTPUT LEVEL SHIFT VA= 0V to +10V +5 +5V VINVIN+ - 5VRELAY + 1K VIN- - VIN+ + VOUT VOUT +10V 0 -5 Advanced Linear Devices ALD2331A/ALD2331B ALD2331 TYPICAL APPLICATIONS VOLTAGE COMPARATOR WITH +/-5V VOLTAGE COMPARATOR WITH OUTPUT LEVEL SUPPLY AND OUTPUT LEVEL SHIFT SHIFT AND HIGH CURRENT LOAD DRIVER +5V +5V +5V +5V 100K 15K VOUT - 0.1F +5V + 15K R1= 15K VOUT - VOUT 0.066V VOUT 100K VIN - VIN+ 0 200 R2=50 + RLoad 0.1F -4V -5V -5V RESPONSE TIME MEASUREMENT CIRCUIT Response time is defined as the internal between the application of an input step function and the instant when the output reaches 50% of its maximum value as measured by the following test circuit: +5V 5.1K 10X INPUT STEP 9K OUT + VIN 1K DUAL LIMIT PHOTO DETECTOR MONITOR DUAL LIMIT WINDOW COMPARATOR VExternal V+ VREF(HIGH) + V+ BUZZER RLOAD LED VLIMIT2 + VOUT + N VREF(LOW) LIGHT PHOTODETECTOR MINIMUM RLOAD = 1.5K VLIMIT 1 + LED turns on as photo-detector voltage reaches VLIMIT1. Both LED and horn turns on as photodetector voltage reaches VLIMIT2. VEXTERNAL= +10V, V+ = +5V OUTPUT HIGH FOR VIN < VREF(HIGH) AND VIN > VREF(LOW) Advanced Linear Devices ALD2331A/ALD2331B ALD2331