ADVANCED LINEAR DEVICES, INC. ALD2332A/ALD2332B/ALD2332 DUAL PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER GENERAL DESCRIPTION APPLICATIONS The ALD2332A/ALD2332B/ALD2332 is a monolithic high performance dual precision voltage comparator built with advanced silicon gate EPAD® CMOS technology intended for high precision analog applications. The ALD2332A/ALD2332B/ALD2332 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 1012Ω; low input bias current of 10pA; fast response time of 520ns with only 10mV input step signal; very low power dissipation of 175µA per comparator; single (+5V) or dual (±5V) power supply operation; and 50mA push-pull output drivers. • MOSFET driver • High source impedance voltage comparison circuits • Multiple limit window comparator • Power supply voltage monitor • Photo-detector sensor circuit • High speed LED driver • Oscillators • Battery operated instruments • Remote signal detection • Multiple relay drivers The input voltage range includes ground, which makes these comparators ideal for single supply low level signal detection with high source impedance. The outputs can source and sink current allowing for application flexibility. They can be used in either wired-OR connection without pull-up resistor or push-pull configuration. ALD2332A/ALD2332B/ ALD2332 can also be used in wired-OR connection with other open drain circuits such as the ALD2331/ALD2303 voltage comparators. BENEFITS The ALD2332A/ALD2332B/ALD2332 voltage comparators are ideal for a great variety of precision analog voltage comparator applications, especially in low level signal detection circuits which require low standby power and high output current. • Simple precision reference voltage setting • On-chip input pre-amplifier and output buffers • Precision voltage comparison without pre-amplifier • Eliminate need for second power supply • Eliminate pull-up resistor PIN CONFIGURATION FEATURES • • • • • • • • • • • • • • Guaranteed to drive 200Ω loads Fanout of 30LS TTL loads Low supply current of 175µA each comparator Pinout of LM193 type industry standard voltage comparators Extremely low input bias currents -- typically 10pA Virtually eliminates source impedance effects Low operating supply voltage of 4V to 10V Single (+5V) and dual supply (±5V) operation High speed for both large and small signals -180ns for TTL inputs and 400ns for 20mV overdrive CMOS, NMOS and TTL compatible Push-pull outputs-current sourcing/ sinking High output sinking current -- typically 50mA Low supply current spikes High gain -- 100V/mV OUT 1 1 8 V+ -IN 1 2 7 OUT 2 +IN 1 3 6 -IN 2 GND 4 5 +IN 2 SAL, PAL PACKAGES BLOCK DIAGRAM (8) V+ ORDERING INFORMATION (“L” suffix for lead free version) Operating Temperature Range * 0°C to +70°C 0°C to +70°C 8-Pin Small Outline Package (SOIC) ALD2332ASAL ALD2332BSAL ALD2332SAL 8-PinPlastic Dip Package ALD2332APAL ALD2332BPAL ALD2332PAL INVERTING INPUT -IN 1 (2) (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 leaded (non-RoHS) or high temperature versions. Rev 2.0 ©2010 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286 www.aldinc.com ABSOLUTE MAXIMUM RATINGS Supply voltage, V+ Differential input voltage range Power dissipation Operating temperature range PAL, SAL packages Storage temperature range Lead temperature, 10 seconds +10.6V -0.3V to V+ +0.3V 600 mW 0°C to +70°C -65°C to +150°C +260°C OPERATING ELECTRICAL CHARACTERISTICS TA = 25°C V+ = +5V unless otherwise specified 2332A Parameter Symbol Supply Voltage VS V+ Supply Current IS Min Typ ±2 4 350 50 2332B Max Min ±5 10 ±2 4 500 150 Typ ±5 10 350 50 2332 Max Min ±2 4 500 350 AVD Input Offset Voltage VOS 0.02 0.5 0.5 1.0 1.0 Input Offset Current1 IOS 0.01 20 0.01 20 Input Bias Current1 IB 0.01 20 0.01 20 V+ -1.5 50 V+ -1.5 500 150 Unit Test Conditions V V Dual Supply Single Supply µA No Load Two Comparators V/mV RLOAD ≥ 15K 2.0 mV RLOAD ≥ 1.5KΩ 0.01 20 pA 0.01 20 pA V+ -1.5 V 0.4 V Common Mode Input 2 Voltage Range VICR Low Level Sink Output Voltage VOL Low Level Sink Output Current IOL 24 50 24 50 24 50 mA High Level Source Output Voltage VOH 3.5 4.5 3.5 4.5 3.5 4.5 V ISOURCE = -2mA SOURCE OUTPUT ON Response Time 2 0.15 -0.3 Max ±5 10 Voltage Gain -0.3 150 Typ 0.4 0.15 -0.3 0.4 0.15 ISINK = 12mA VINPUT = 1V Differential VOL = 1.0 V SINK OUTPUT ON tRP 1.1 1.1 1.1 µs RL = 5.1KΩ, CL = 15pF 5mV Input Step/ 0mV Overdrive tRP 2.4 2.4 2.4 µs RL = 5.1KΩ ,CL =15pF 1mVInput Step/ 0mV Overdrive tRP 400 400 400 ns RL = 5.1KΩ, CL = 15pF 100mV Input Step/ 20mV Overdrive tRP 180 180 180 ns RL = 5.1KΩ ,CL =15pF TTL-Level Input Step Common Mode Rejection Ratio CMRR 80 80 80 dB VINPUT = 0V to 2.5V Power Supply Rejection Ratio PSRR 75 75 75 dB V+ = 4V to 5V Notes: 1 2 Consists of junction leakage currents Sample test parameter ALD2332A/ALD2332B/ALD2332 Advanced Linear Devices 2 of 11 TYPICAL PERFORMANCE CHARACTERISTICS COMMON - MODE VOLTAGE REFERRED TO SUPPLY VOLTAGE COMMON - MODE VOLTAGE LIMITS (V) TRANSFER FUNCTION OUTPUT VOLTAGE (V) +5.0 TA = 25°C 0.0 -5.0 -2.5 0.5 V+ VS = ± 2.5 V -0.5 -1.0 ≈ V-0.5 -55 +2.5 0.0 ≈ 0.5 -25 0 25 50 75 100 125 TEMPERATURE (°C) DIFFERENTIAL INPUT VOLTAGE (mV) TOTAL SUPPLY CURRENT vs. TOTAL SUPPLY VOLTAGE SUPPLY CURRENT vs. TEMPERATURE 550 500 VS = ±2.5V No Load All comparators 500 TA = 25°C RL = ∞ + SUPPLY CURRENT (µA) SUPPLY CURRENT ( µA) V+ 400 300 200 100 450 400 350 300 250 200 2.0 6.0 4.0 12.0 10.0 8.0 0 -25 25 50 100 75 NORMALIZED INPUT OFFSET VOLTAGE vs. TEMPERATURE OUTPUT HIGH VOLTAGE vs. SUPPLY VOLTAGE VCM = 0V VS = ±2.5V +2 +1 0 -1 -2 -3 -55 -25 0 25 50 75 100 OUTPUT HIGH VOLTAGE FROM V+ (V) TEMPERATURE (°C) +3 NORMALIZED INPUT OFFSET VOLTAGE (mV) -55 SUPPLY VOLTAGE (V) V+ -0.6 TA = 25°C IOH = -2mA V+ -0.5 V+ -0.4 V+ -0.3 V+ -0.2 V+ -0.1 V+ 125 TEMPERATURE (°C) ALD2332A/ALD2332B/ALD2332 125 Advanced Linear Devices 2 4 6 8 SUPPLY VOLTAGE (V) 10 12 3 of 11 TYPICAL PERFORMANCE CHARACTERISTICS (cont'd) INPUT BIAS CURRENT vs. TEMPERATURE OUTPUT LOW VOLTAGE vs. SUPPLY VOLTAGE 1000 INPUT BIAS CURRENT (pA) OUTPUT LOW VOLTAGE (V) 0.6 TA = 25°C IOL= 12mA 0.5 0.4 0.3 0.2 0.1 V+ = +5V 100 10 1 0.0 2 4 8 SUPPLY VOLTAGE (V) 0 -55 12 10 6 V = +3.5V 0.2 + V = +5V V+ = +10V 0.0 0 25 50 75 100 OUTPUT SATURATION VOLTAGE (V) LOW LEVEL OUTPUT VOLTAGE (V) + 0.3 -25 V+ = +5V 2.5 TA = 250C 1.5 TA = -250C 1.0 0.5 TA = -550C 0.0 15 30 60 45 75 OUTPUT SINK CURRENT (mA) INPUT OFFSET VOLTAGE vs. TEMPERATURE IOH = -2mA 6.0 V+ = +5V 4.0 V+ = +4V 0.0 INPUT OFFSET VOLTAGE (mV) HIGH LEVEL OUTPUT VOTAGE (V) 125 TA = 850C 0 10.0 2.0 100 TA = 1250C 2.0 125 HIGH LEVEL OUTPUT VOLTAGE vs. TEMPERATURE V+ = +10V 75 3.0 AMBIENT TEMPERATURE (°C) 8.0 50 SATURATION VOLTAGE vs. SINK CURRENT ISINK = 12mA VINPUT = 1V Differential -55 25 AMBIENT TEMPERATURE ( C) 0.5 0.1 0 0 LOW LEVEL OUTPUT VOLTAGE vs. TEMPERATURE 0.4 -25 2.0 1.6 RL = 5.1KΩ 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 75 100 125 -55 ALD2332A/ALD2332B/ALD2332 -25 0 25 50 75 100 125 AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) Advanced Linear Devices 4 of 11 TYPICAL PERFORMANCE CHARACTERISTICS (cont'd) RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES 90.0 6.0 V+ = +5V RL = 5.1KΩ 85.0 OUTPUT VOLTAGE (V) COMMON MODE REJECTION MODE (dB) COMMON MODE REJECTION RATIO vs. TEMPERATURE 80.0 75.0 70.0 65.0 5.0 RL = 5.1KΩ -55 -25 0 25 50 75 100 50mV 20mV 3.0 10mV 2.0 5mV 2mV + V = +5V TIME (µS) OUTPUT VOLTAGE (V) 5.0 1mV 4.0 RL = 5.1KΩ CL = 15pF Input Step 2.0 10mV 1.0 2mV 50mV 0.0 + V = +5V TA = 250C -1.0 0.0 0.3 0.6 0.9 1.2 1.5 1.8 TIME (µS) ALD2332A/ALD2332B/ALD2332 2.1 2.4 2.7 3.0 POWER SUPPLY REJECTION RATIO (dB) 6.0 5mV TA = 250C -1.0 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 125 RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES 20mV 1mV 1.0 AMBIENT TEMPERATURE (°C) 3.0 Input Step 4.0 0.0 60.0 CL = 15pF POWER SUPPLY REJECTION RATIO vs.TEMPERATURE 90.0 + V = +5V RL = 5.1KΩ 85.0 80.0 75.0 70.0 65.0 60.0 -55 Advanced Linear Devices -25 0 25 50 75 100 AMBIENT TEMPERATURE (0C) 125 5 of 11 TYPICAL APPLICATIONS PRECISION SINGLE SUPPLY VOLTAGE COMPARATOR WITH DIRECT RELAY DRIVER PRECISION SINGLE SUPPLY VOLTAGE COMPARATOR WITH DIRECT RELAY DRIVER +5 +5 +5 5VRELAY VR VIN VIN- - VIN+ + 5VRELAY - 1K + -5 ZERO CROSSING DETECTOR MULTIPLE RELAY DRIVE +3V +5V +5V 50K VIN VREF VOUT + VIN -5V + DOUBLE DUAL LIMIT WINDOW COMPARATOR +10V +10V 50K +10V VH2 VH1 + + +10V 1K VIN +10V + VL1 + VL2 50K ALD2332A/ALD2332B/ALD2332 VL1 and VH1 first limit window send warning VL2 and VH2 second limit window execute system cutoff Advanced Linear Devices 6 of 11 TYPICAL APPLICATIONS (cont'd) VOLTAGE COMPARATOR WITH SINGLE SUPPLY AND OUTPUT LEVEL SHIFT DOUBLE DUAL PRECISON PHOTO DETECTOR MONITOR VExternal VA= 0V to +10V V+ +5V BUZZER VIN- - VIN+ + VOUT VOUT +10V LED VLIMIT2 0 + VLIMIT 1 LIGHT PHOTODETECTOR PRECISION VOLTAGE COMPARATOR WITH COMPLEMENTARY PUSH-PULL OUTPUTS + - V+ + Q LED turns on as photo-detector voltage reaches VLIMIT 1. Both LED and horn turns on as photo-detector voltage reaches VLIMIT 2. VExternal = +10V, V+ = +5V. VREF + VIN Q - RESPONSE TIME MEASUREMENT CIRCUIT Response time is defined as the interval 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 5.1KΩ 10X INPUT STEP 9KΩ OUT + VIN 1KΩ ALD2332A/ALD2332B/ALD2332 Advanced Linear Devices 7 of 11 TYPICAL APPLICATIONS (cont'd) PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER +10V +10V P- Channel VP 02 Power MOSFET +10V 10K + V1 2A Source VIN 2A Sink 40K +10V + V2 N - Channel VN 01 Power MOSFET 10K This circuit eliminates crossover current in the complementary power transistors. The outputs can be used to source and sink different loads or tied together to provide push-pull drive of the same load. TIME DELAY GENERATOR V+ RF1 V1 V+ VREF VIN + RT RF2 V2 + + CT RF3 V3 + RF4 Design & Operating Notes: 1. As each output sources up to 10mA in the output high state, the output stage of a wired - OR low output circuit must be able to sink this current and still provide desired output voltage levels. For TTL output levels, this consideration limits the number to a maximum of three ALD2302 outputs wired-OR together. 2. In order to minimize stray oscillation, all unused inputs must be tied to ground. 3. The input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically less than 1 pA at room temperature. The currents are a function of ambient temperature, and would have to be considered in applications where very high source impedance or high accuracy are involved. 4. The high output sinking current of 60mA for each output offers flexibility in many applications, as a separate buffer or driver would not be necessary to drive the intended load. However, as the circuit normally operates close to ambient temperature due to its very low power consumption, thermal effects caused by large output current transients must be considered in certain applications. ALD2332A/ALD2332B/ALD2332 Advanced Linear Devices 8 of 11 TYPICAL APPLICATIONS (cont'd) VOLTAGE LEVEL TRANSLATOR PRECISION DUAL LIMIT WINDOW COMPARATAOR V+ V+ = +10V RLOAD + VREF(HIGH) VREF - VOUT VIN VOUT + + VIN VREF(LOW) RLOAD = 1.5KΩ OUTPUT HIGH FOR VIN <VREF(HIGH) AND VIN > VREF(LOW) VREF = 1.4V for TTL input VREF = V+ 2 for CMOS input Output VOUT swings from rail-to-rail PRECISON VOLTAGE COMPARATOR WITH +/-5V SUPPLY AND OUTPUT LEVEL SHIFT +5V +5V 100K 15K VOUT - 0.1µF +5V VOUT + 100K 15K 0 0.1µF -5V PRECISION VOLTAGE COMPARATOR WITH OUTPUT LEVEL SHIFT AND HIGH CURRENT LOAD DRIVER +5V +5V VIN- R1= 15K VOUT - VOUT 0.066V VIN+ R2=50 + 200Ω RLoad -4V -5V ALD2332A/ALD2332B/ALD2332 Advanced Linear Devices 9 of 11 SOIC-8 PACKAGE DRAWING 8 Pin Plastic SOIC Package E Millimeters Dim S (45°) D A Min 1.35 Max 1.75 Min 0.053 Max 0.069 A1 0.10 0.25 0.004 0.010 b 0.35 0.45 0.014 0.018 C 0.18 0.25 0.007 0.010 D-8 4.69 5.00 0.185 0.196 E 3.50 4.05 0.140 0.160 1.27 BSC e A A1 e Inches 0.050 BSC H 5.70 6.30 0.224 0.248 L 0.60 0.937 0.024 0.037 ø 0° 8° 0° 8° S 0.25 0.50 0.010 0.020 b S (45°) H L ALD2332A/ALD2332B/ALD2332 C ø Advanced Linear Devices 10 of 11 PDIP-8 PACKAGE DRAWING 8 Pin Plastic DIP Package E E1 Millimeters D S A2 A1 e b b1 A L Inches Dim Min Max Min Max A 3.81 5.08 0.105 0.200 A1 0.38 1.27 0.015 0.050 A2 1.27 2.03 0.050 0.080 b 0.89 1.65 0.035 0.065 b1 0.38 0.51 0.015 0.020 c 0.20 0.30 0.008 0.012 D-8 9.40 11.68 0.370 0.460 E 5.59 7.11 0.220 0.280 E1 7.62 8.26 0.300 0.325 e 2.29 2.79 0.090 0.110 e1 L 7.37 7.87 0.290 0.310 2.79 3.81 0.110 0.150 S-8 1.02 2.03 0.040 0.080 0° 15° 0° 15° ø c e1 ø ALD2332A/ALD2332B/ALD2332 Advanced Linear Devices 11 of 11