ADVANCED LINEAR DEVICES, INC. ALD2301A/ALD2301B ALD2301/ALD2301C DUAL PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER GENERAL DESCRIPTION APPLICATIONS The ALD2301A/ALD2301B/ALD2301/ALD2301C is a monolithic high performance dual voltage comparator built with advanced silicon gate CMOS technology. It features very high typical input impedance of 10 12Ω; low input bias current of 10pA; fast response time of 300ns; very low power dissipation of 55µA per comparator; and single +5V or dual ±5V power supply operation. • High source impedance voltage comparison circuits • 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 configuration, allowing maximum application flexibility, such as wired-OR connection. The outputs can be connected to a higher external voltage than V +. PIN CONFIGURATION The ALD2301A/ALD2301B/ALD2301/ALD2301C is ideal for a great variety of voltage comparator applications, especially low level signal detection circuits requiring low standby power, yet retaining high output current capability as needed. FEATURES • Fanout of 30 LS TTL loads • Low supply current of 110µA typical • Functional equivalent to LM193 industry standard comparators • Extremely low input bias currents -- 10pA typical • Virtually eliminates source impedance effects • Low operating supply voltage of 3V to 12V • Single +5V and dual supply ±5V operation • High speed for both large signal and low level signals -- 300ns typical for TTL inputs • CMOS, NMOS and TTL compatible • Wired-OR open drain outputs • High output sinking current -- 60mA typical • Low supply current spikes OUT1 1 8 V+ -IN 1 2 7 OUT 2 +IN 1 3 6 -IN 2 GND 4 5 +IN 2 TOP VIEW DA, PA, SA PACKAGE BLOCK DIAGRAM (8) V+ ORDERING INFORMATION INVERTING INPUT -IN 1 (2) Operating Temperature Range * -55°C to +125°C 0°C to +70°C 0°C to +70°C (1) OUT 1 NONINVERTING INPUT +IN 1 (3) V+ 8-Pin CERDIP Package 8-Pin Small Outline Package (SOIC) 8-Pin Plastic Dip Package INVERTING INPUT -IN 2 (6) (7) OUT 2 NONINVERTING INPUT +IN 2 (5) (4) GND ALD 2301A DA ALD 2301B DA ALD 2301 DA ALD 2301C DA ALD2301A SA ALD 2301B SA ALD 2301 SA ALD 2301C SA ALD2301A PA ALD2301B PA ALD2301 PA ALD2301C PA * Contact factory for industrial temperature range © 1998 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 PA, SA package DA package Storage temperature range Lead temperature, 10 seconds 13.2V -0.3V to V+ +0.3V 600 mW 0°C to +70°C -55°C to +125°C -65°C to +150°C +260°C OPERATING ELECTRICAL CHARACTERISTICS TA = 25°C V+ = +5V unless otherwise specified Parameter Symbol Min 2301 Typ Max Min 2301A Typ Max Min 2301B Typ Max Voltage Supply V+ Supply Current IS Voltage Gain AVD Input Offset Voltage VOS Input Offset Current1 IOS 10 200 10 200 10 200 Input Bias Current1 IB 10 200 10 200 10 200 Common Mode Input Voltage Range2 VICR 3 12 110 50 3 180 150 12 110 50 V+ -1.5 -0.3 Low Level VOL Output Voltage 0.15 180 150 10 3 12 110 50 V + -1.5 -0.3 0.4 0.15 2301C Typ Max 3 12 180 150 2 Min 110 50 V + -1.5 0.4 0.15 0.4 V µA 20 mV 10 400 pA 10 400 pA -0.3 0.15 Test Conditions RLOAD = ∞ V/mV RLOAD ≥ 15KΩ 150 5 -0.3 180 Unit RLOAD ≥ 1.5KΩ V + -1.5 V 0.4 V ISINK = 12mA VINPUT = 1V Differential mA VOL = 1.0 V nA VOH = 5.0 V Low Level Output Current IOL High Level Leakage Current IOH .01 tRP 650 650 650 650 ns RL = 5.1KΩ CL = 15pF 100mV Input Step/5mV Overdrive 300 300 300 300 ns RL = 5.1KΩ Response Time2 24 60 24 20 60 .01 24 20 60 .01 24 20 60 .01 20 CL =15pF TTL - Level Input Step Notes : 1 2 7-2 Consists of junction leakage currents. Sample tested parameters. Advanced Linear Devices ALD2301A/ALD2301B ALD2301/ALD2301C TYPICAL PERFORMANCE CHARACTERISTICS SATURATION VOLTAGE vs.TEMPERATURE TRANSFER FUNCTION +6.0 VS = ± 2.5V ISINK = 50mA 1.2 OUTPUT VOLTAGE (V) SATURATION VOLTAGE (V) 1.4 1.0 0.8 0.6 0.4 0.2 TA = 25°C VS = ±6V RL = 5.1K 0.0 -6.0 0 -25 0 25 50 75 100 COMMON - MODE VOLTAGE REFERRED TO SUPPLY VOLTAGE RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES INPUT VOLTAGE (mV) VS = ± 2.5V V+ -0.5 ≈ ≈ 0.5 V-0.5 -55 -25 0 25 50 75 100 TA = 25°C VS = ±2.5V V+ 100 VIN 5.1K + - ≈ 0V +2.5 VOUT 5mV 10mV 20mV 2mV -2.5 125 0.0 0.2 0.4 INPUT VOLTAGE (mV) VS = ±2.5V 0.9 100 1.0 1.2 1.4 OUTPUT VOLTAGE (V) 85°C 25°C -25°C -55°C 0.0 15 30 45 60 OUTPUT SINK CURRENT (mA) TA = 25°C VS = ±2.5V V+ VIN 0 5.1K + - ≈ 125°C ALD2301A/ALD2301B ALD2301/ALD2301C 0.8 RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES 1.2 0 0.6 TIM E (µs) 1.5 0.3 ≈ V- 50mV 0.0 SATURATION VOLTAGE vs. SINK CURRENT 0.6 7 0 TEMPERATURE (°C) OUTPUT SATURATION VOLTAGE (V) +2.5 0.0 DIFFERENTIAL INPUT VOLTAGE (mV) 0.5 -1.0 -2.5 125 TEM PERATURE (°C) OUTPUT VOLTAGE (V) COMMON - MODE VOLTAGE LIMITS (V) -55 0V VOUT V- 2mV +2.5 ≈ 5mV 10mV 20mV 50mV 0.0 -2.5 75 Advanced Linear Devices 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 TIME ( µS) 7-3 TYPICAL PERFORMANCE CHARACTERISTICS TOTAL SUPPLY CURRENT vs. TOTAL SUPPLY VOLTAGE SUPPLY CURRENT vs. TEMPERATURE 200 + 160 VS = ±2.5V No Load All comparators 180 TA = 25°C RL = ∞ SUPPLY CURRENT (µA) SUPPLY CURRENT ( µA) V+ 140 120 100 80 160 140 120 100 80 60 2.0 6.0 4.0 -55 12.0 10.0 8.0 -25 SUPPLY VOLTAGE (V) 0 25 50 75 100 125 TEMPERATURE (°C) INPUT OFFSET VOLTAGE vs. TEMPERATURE OFFSET VOLTAGE (mV) 3.0 2.8 VCM = 0V VS = ± 2.5V 2.6 2.4 2.2 2.0 1.8 -55 0 -25 25 50 75 100 125 TEMPERATURE (°C) TYPICAL APPLICATIONS DUAL LIMIT WINDOW COMPARATOR DUAL LIMIT PHOTO-DETECTOR MONITOR VExternal V+ V+ 1/2 ALD2301 VREF(HIGH) V+ RLOAD + VOLTAGE COMPARATOR WITH COMPLEMENTARY OUTPUTS BUZZER + Q - 1/2 ALD2301 1/2 ALD2301 LED - VLIMIT2 + VREF VOUT - + VIN VIN VLIMIT 1 LIGHT VREF(LOW) 1/2 ALD2301 MINIMUM RLOAD = 1.5KΩ PHOTODETECTOR + + - Q 1/2 ALD2301 1/2 ALD2301 OUTPUT HIGH FOR VIN < VREF(HIGH) AND VIN > VREF(LOW) LED turns on as photo-detector voltage reaches V LIMIT1. Both LED and horn turns on as photo-detector voltage reaches VLIMIT2. V EXTERNAL = +12V V+ = +5V. 7-4 Advanced Linear Devices ALD2301A/ALD2301B ALD2301/ALD2301C