ADVANCED LINEAR DEVICES, INC. ALD2303A/ALD2303 DUAL PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER GENERAL DESCRIPTION FEATURES The ALD2303A/ALD2303 is a precision monolithic high performance dual voltage comparator built with advanced silicon gate CMOS technology. It features very high typical input impedance of 1012Ω; low input bias current of 10pA; very low power dissipation of 7.5µA per comparator; and single (+5V) or dual (±5V) power supply operation. • • • • The input voltage range includes ground, making this comparator ideal for single supply low level signal detection with high source impedance. The ALD2303A/ALD2303 can be used in connection with other voltage comparator circuits such as the ALD2301/ALD2302/ ALD4302 voltage comparators. The output can be connected to a higher external voltage than V+. The ALD2303A/ALD2303 is ideal for high precision micropower voltage comparator applications, especially low level signal detection circuits requiring low standby power, yet retaining high output current capability. • • • • • • • • • 3V, 5V, and 10V supply Guaranteed to drive 200Ω loads Fanout of 30LS TTL loads Guaranteed maximum supply current of 20µA for each comparator Pinout of LM193 type industry standard comparators Extremely low input bias currents -- typically 10pA Virtually eliminates source impedance effects Single (+5V) and dual supply (±5V) operation CMOS, NMOS and TTL compatible Open drain wired-OR outputs High output sinking current -- typically 60mA Low supply current spikes High gain -- 100V/mV APPLICATIONS • • • • • • • • • • • • Sensor detection circuits PCMCIA instruments MOSFET driver High source impedance voltage comparison circuits Multiple limit window comparator Power supply voltage monitor Photodetector sensor circuit High speed LED driver Oscillators Battery operated instruments Remote signal detection Multiple relay drivers PIN CONFIGURATION OUT 1 1 8 V+ -IN 1 2 7 OUT 2 +IN 1 3 6 -IN 2 GND 4 5 +IN 2 SAL, PAL, DA PACKAGES BENEFITS • Extremely low power and high precision combination • Built-in high input impedance buffer • Built-in output driver with up to 60mA sink current BLOCK DIAGRAM ORDERING INFORMATION (“L” suffix for lead free version) Operating Temperature Range * 0°C to +70°C 0°C to +70°C -55°C to +125°C 8-Pin Small Outline Package (SOIC) ALD2303ASAL ALD2303SAL 8-Pin Plastic Dip Package ALD2303APAL ALD2303APAL 8-Pin CERDIP Package ALD2303ADA ALD2303DA (8) V+ 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 SAL, PAL packages DA package Storage temperature range Lead temperature, 10 seconds 10.6V -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 2303A Symbol Supply Voltage VS V+ Supply Current IS Voltage Gain AVD Input Offset Voltage VOS 0.5 1.0 2.0 1.5 Input Offset Current 1 IOS 10 200 800 Input Bias Current 1 IB 10 200 1000 Common Mode Input Voltage Range 2 VICR Min Typ 2303 Parameter ±1.5 3 15 10 Max Min ±5 10 ±1.5 3 40 100 15 10 V+-1.5 -0.3 Typ Test Max Unit ±5 10 V V Dual Supply Single Supply 40 µA RLOAD = ∞ 100 V/mV RLOAD ≥15KΩ 4.0 5.0 mV RLOAD =1.5KΩ 0°C ≤ TA ≤ 70°C 10 200 800 pA 0°C ≤ TA ≤ 70°C 10 200 1000 pA 0°C ≤ TA ≤ 70°C V+ -1.5 V 0.4 V ISINK =12mA VINPUT =1V Differential mA VOL =1.0V nA VOH = 5.0V -0.3 Low Level Output Voltage VOL Low Level Output Current IOL High Level Leakage Current ILH 0.01 tRP 6.5 6.5 µs 5 5 µs Response Time 2 Notes: 1 2 0.18 24 0.4 60 0.18 24 20 Conditions 60 0.01 20 RL =50KΩ CL = 15pF 10mV Input Step/10mV Overdrive RL = 50KΩ CL = 15pF TTL- Level Input Step Consists of junction leakage currents Sample tested parameters ALD2303A/ALD2303 Advanced Linear Devices 2 of 9 TYPICAL PERFORMANCE CHARACTERISTICS SATURATION VOLTAGE vs. TEMPERATURE TRANSFER FUNCTION +6.0 VS = ± 2.5V I SINK = 50mA 1.2 OUTPUT VOLTAGE (V) SATURATION VOLTAGE (V) 1.4 1.0 0.8 0.6 0.4 TA = 25°C VS = ±6V RL = 50K 0.0 0.2 -6.0 0 -25 0 25 50 75 100 125 -2.5 COMMON - MODE VOLTAGE REFERRED TO SUPPLY VOLTAGE RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES INPUT VOLTAGE (mV) DIFFERENTIAL INPUT VOLTAGE (mV) 0.5 V+ VS = ± 2.5 V -0.5 0 V+ 100 VIN -1.0 ≈ ≈ 0.5 V- TA = 25°C VS = ±2.5V 50K + - ≈ VOUT ≈ 0V V- +2.5 TTL 0.0 10mV -2.5 -0.5 -55 -25 0 25 50 75 100 0 125 1 2 3 SATURATION VOLTAGE vs. SINK CURRENT INPUT VOLTAGE (mV) VS = ±2.5V 1.2 0.9 100 OUTPUT VOLTAGE (V) 25°C -25°C -55°C 0.3 0.0 0 VIN 50K + - ≈ 0V VOUT ≈ V- 30 45 60 5mV 10mV 20mV 50mV TTL 0.0 -2.5 75 0 1 2 3 4 5 6 7 TIM E (µs) OUTPUT SINK CURRENT (mA) ALD2303A/ALD2303 7 +2.5 85°C 15 6 TA = 25°C VS = ±2.5V V+ 125°C 0 5 RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES 1.5 0.6 4 TIM E (µs) TEMPERATURE (°C) OUTPUT SATURATION VOLTAGE (V) +2.5 0.0 TEM PERATURE (°C) OUTPUT VOLTAGE (V) COMMON - MODE VOLTAGE LIMITS (V) -55 Advanced Linear Devices 3 of 9 TYPICAL PERFORMANCE CHARACTERISTICS (cont'd) RESPONSE TIME FOR REPRESENTATIVE SAMPLES TOTAL SUPPLY CURRENT vs. TOTAL SUPPLY VOLTAGE V+ SUPPLY CURRENT ( µA) RESPONSE TIME (µs) + 100 10 TA = 25°C RL = ∞ 10 tdLH VS = ±2.5V TA = 25°C 5 1 0 2.0 6.0 4.0 50 12.0 10.0 8.0 SUPPLY VOLTAGE (V) +3 6 INPUT OFFSET VOLTAGE (mV) NORMALIZED INPUT OFFSET VOLTAGE (mV) 200 150 INPUT OFFSET VOLTAGE vs. SUPPLY VOLTAGE REPRESENTATIVE SAMPLES NORMALIZED INPUT OFFSET VOLTAGE vs. TEMPERATURE VCM = 0V VS = ±2.5V +2 +1 0 -1 -2 -3 TA = 25°C 4 2 0 -2 -4 -6 -55 -25 0 25 50 75 100 2 125 4 12 OUTPUT LOW VOLTAGE vs. SUPPLY VOLTAGE RESPONSE TIME FOR REPRESENTATIVE SAMPLES 10 0.6 OUTPUT LOW VOLTAGE (V) VS = ±2.5V TA = 25°C tdHL 5 TA = 25°C IOL= 12mA 0.5 0.4 0.3 0.2 0.1 0.0 0 50 100 150 200 SAMPLES ALD2303A/ALD2303 10 6 8 SUPPLY VOLTAGE (V) TEMPERATURE (°C) RESPONSE TIME (µs) 100 SAMPLES Advanced Linear Devices 2 4 6 8 SUPPLY VOLTAGE (V) 10 12 4 of 9 TYPICAL APPLICATIONS ZERO CROSSING DETECTOR DOUBLE DUAL LIMIT WINDOW COMPARATOR +3V ALD2303 50K +12V +12V VOUT VIN + 50K +12V VH2 -3V + 1/2 ALD2303 VH1 + +12V VIN MULTIPLE RELAY DRIVE +5V +12V 47K +5V + VL1 VREF + VIN + VL2 1/2 ALD2303 50K ALD2303 VL1 and VH1 first limit window send warning. VL2 and VH2 second limit window execute system cutoff. VOLTAGE LEVEL TRANSLATOR V+ = +10V 50K VREF VOUT VIN + 1/2 ALD2303 VREF = 1.4V for TTL input VREF = V+ 2 for CMOS input Output VOUT swings from rail-to-rail ALD2303A/ALD2303 Advanced Linear Devices 5 of 9 TYPICAL APPLICATIONS (cont'd) PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER +12V +12V P- Channel VP 02 Power MOSFET +12V R 10K V1 + 2A Source VIN 2A Sink 40K +12V V2 R + N - Channel VN 01 Power MOSFET 10K R ≥ 50 KΩ 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. ALD2303 TIME DELAY GENERATOR V+ RF1 1/2 ALD2303 1/2 ALD2303 V1 V+ + 50KΩ VREF RT VIN 1/2 ALD2303 RF2 V2 + + CT RF3 1/2 ALD2303 V3 + RF4 Design & Operating Notes: 1. In order to minimize stray oscillation, all unused inputs must be tied to ground. 2. The input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically less than 1pA at room temperature. These 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. 3. 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. ALD2303A/ALD2303 Advanced Linear Devices 6 of 9 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 ALD2303A/ALD2303 C ø Advanced Linear Devices 7 of 9 PDIP-8 PACKAGE DRAWING 8 Pin Plastic DIP Package Millimeters E E1 D S A2 A1 e b A L 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 7.37 7.87 0.290 0.310 L 2.79 3.81 0.110 0.150 S-8 1.02 2.03 0.040 0.080 0° 15° 0° 15° ø b1 Inches c e1 ALD2303A/ALD2303 ø Advanced Linear Devices 8 of 9 CERDIP-8 PACKAGE DRAWING 8 Pin CERDIP Package E E1 Millimeters D A1 s A L L2 b b1 e L1 Min Inches Dim A 3.55 Max 5.08 0.140 Min Max 0.200 A1 1.27 2.16 0.050 0.085 b 0.97 1.65 0.038 0.065 b1 0.36 0.58 0.014 0.023 C 0.20 0.38 0.008 0.015 D-8 -- 10.29 -- 0.405 E 5.59 7.87 0.220 0.310 E1 7.73 8.26 0.290 0.325 e 2.54 BSC 0.100 BSC e1 7.62 BSC 0.300 BSC L 3.81 5.08 0.150 0.200 L1 3.18 -- 0.125 -- L2 0.38 1.78 0.015 0.070 S -- 2.49 -- 0.098 Ø 0° 15° 0° 15° C e1 ALD2303A/ALD2303 ø Advanced Linear Devices 9 of 9