Philips Semiconductors Linear Products Product specification Low power dual voltage comparator AU2903 DESCRIPTION PIN CONFIGURATION The AU2903 consists of two independent precision voltage comparators with an offset voltage specification as low as 2.0mV max. for two comparators which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. These comparators also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage. D and N Packages OUTPUT A 1 8 V+ INVERTING INPUT A 2 7 OUTPUT B NON–INVERTING INPUT A 3 6 INVERTING INPUT B GND 4 5 NON–INVERTING INPUT B A FEATURES B TOP VIEW • Wide single supply voltage range 2.0VDC to 36VDC or dual supplies ±1.0VDC, to ±18VDC • Very low supply current drain (0.8mA) independent of supply EQUIVALENT CIRCUIT voltage (2.0mW/comparator at 5.0VDC) • Low input biasing current 25nA • Low input offset current ±5nA and offset voltage ±2mV • Input common-mode voltage range includes ground • Differential input voltage range equal to the power supply voltage • Low output 250mV at 4mA saturation voltage • Output voltage compatible with TTL, DTL, ECL, MOS and CMOS V+ 3.5µA Q2 + INPUT 100µA 3.5µA 100µA Q3 Q1 Q4 logic systems OUTPUT – INPUT Q8 Q7 APPLICATIONS Q5 • A/D converters • Wide range VCO • MOS clock generator • High voltage logic gate • Multivibrators Q6 (1 Comparator Only) ORDERING INFORMATION TEMPERATURE RANGE ORDER CODE DWG # 8-Pin Plastic Small Outline (SO) Package DESCRIPTION -40°C to +125°C AU2903D 0174C 8-Pin Plastic Dual In-Line Package (DIP) -40°C to +125°C AU2903N 0404B August 31, 1994 300 853-1636 13721 Philips Semiconductors Linear Products Product specification Low power dual voltage comparator AU2903 ABSOLUTE MAXIMUM RATINGS SYMBOL VCC PARAMETER RATING UNIT 36 or ±18 VDC 36 VDC -0.3 to +36 VDC N package 1160 mW D package 780 mW Supply voltage Differential input voltage VIN Input voltage PDMAX Maximum power dissipation, TA=25°C (still-air)3 Output short-circuit to ground1 IIN Input current (VIN<-0.3VDC)2 TA Operating temperature range Continuous AU2903 TSTG Storage temperature range TSOLD Lead soldering temperature (10sec max) 50 mA -40 to +125 °C -65 to +150 °C 300 °C NOTES: 1. Short circuits from the output to V+ can cause excessive heating and eventual destruction. The maximum output current is approximately 20mA independent of the magnitude of V+. 2. This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the comparators to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3VDC. 3. Derate above 25°C, at the following rates: N package at 9.3mW/°C D package at 6.2mW/°C August 31, 1994 301 Philips Semiconductors Linear Products Product specification Low power dual voltage comparator AU2903 DC AND AC ELECTRICAL CHARACTERISTICS V+=5VDC, AU2903; -40°C, TA ≤ +125°C, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS VOS Input offset voltage2 TA = 25°C Over temp. VCM Input common-mode voltage range3, 6 TA = 25°C Over temp. VIDR Differential input voltage1 AU2903 Min Max ±2.0 ±9 ±7.0 ±15 mV V+-1.5 V+-2.0 V V+ V 0 0 Keep all VINs ≥ 0VDC (or V- if need) IBIAS Input bias current4 IIN(+) or IIN(-) with output in linear range TA=25°C Over temp. IOS Input offset current IIN(+) - IIN(-) TA = 25°C Over temp. IOL Output sink current VIN(-) ≥ 1VDC, VIN(+) = 0, V0 ≤ 1.5VDC TA = 25°C IOH Output leakage current VIN(+) ≥ 1VDC, VIN(-) = 0 V0 = 5VDC, TA = 25°C 6.0 UNIT Typ 25 200 250 500 ±5 ±50 ±50 ±200 16 nA nA mA 0.1 V0 = 30VDC, over temp. nA nA 1.0 µA mA RL = ∞ on both comparators. ICC AV Supply current Voltage gain TA = 25°C 0.8 1 V+ = 30V, over temp. 1 2.5 RL ≥ 15kΩ, V+ = 15VDC, TA = 25°C 25 100 V/mV VIN(-) ≥ 1VDC, VIN(+) = 0, VOL Saturation voltage ISINK ≤ 4mA TA = 25°C 400 Over temp. tLSR Large-signal response time VIN = TTL logic swing, VREF = 1.4VDC VRL = 5VDC, RL = 5.1kΩ, TA = 25°C tR Response time5 VRL = 5VDC, RL = 5.1kΩ TA = 25°C 400 mV 700 300 ns 1.3 µs NOTES: 1. Positive excursions of input voltage may exceed the power supply level by 17V. As long as the other voltage remains within the common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than -0.3VDC (VDC below the magnitude of the negative power supply, if used). 2. At output switch point, VO ≈ 1.4VDC, RS = 0Ω with V+ from 5VDC to 30VDC and over the full input common-mode range (0VDC to V+-1.5VDC). 3. The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode voltage range is V+-1.5V, but either or both inputs can go to 30VDC without damage. 4. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exists on the reference or input lines. 5. The response time specified is for a 100mV input step with a 5mV overdrive. 6. For input signals that exceed VCC, only the over-driven comparator is affected. With a 5V supply, VIN should be limited to 25V maximum, and a limiting resistor should be used on all inputs that might exceed the positive supply. August 31, 1994 302 Philips Semiconductors Linear Products Product specification Low power dual voltage comparator AU2903 TYPICAL APPLICATIONS V+ V+ 700kΩ 100kΩ – + VC FREQUENCY CONTROL VOLTAGE INPUT 30kΩ 5.1kΩ 500pF 3.0kΩ – 10 + OUTPUT 1 .01µF 0.1µF + V – /2 20kΩ OUTPUT 2 20kΩ 50kΩ + V + /2 – NOTES: V+ = 30VDC + 250m VDC < VC = 50VDC 700H < fO = 100kHz Two–Decade High–Frequency VCO +V + V (12V 2RS REF HI +V IN DC) 10KΩ + RS LAMP – + + 5V 2RS DC 2N2222 – +VREF LOW 360 Limit Comparator + +V REF 4 – 5VDC 100k 100 + 5V DC 360 + +VREF 1.4VDC REF 3 – + 5V DC –12VDC TTL–to–MOS Logic Converter 360 +V 10KΩ 100k 100 VO V+ + REF 2 – 200kΩ 100k 100 + 5V 100kΩ V+ 0.1µF + – VO 0 + REF 1 – 100 200kΩ 100k Visible Voltage Indicator CRYSTAL 1 – 100kHz Crystal–Controlled Oscillator NOTE: Input of unused comparators should be grounded. August 31, 1994 2.0kΩ DC 360 +V -12V – + +V o VO 303 Philips Semiconductors Linear Products Product specification Low power dual voltage comparator AU2903 TYPICAL PERFORMANCE CHARACTERISTICS Input Current Output Saturation Voltage 10 60 TA = -55oC TA = 0oC 40 20 TA = +125oC 10 20 +70oC 30 TA = +125oC 0.1 TA = -55oC 0.01 TA = +25o 0.1 1.0 10 100 v + — SUPPLY VOLTAGE — VDC IO — OUTPUT SINK CURRENT (mA) Response Time for Various Input Overdrives — Negative Transition Response Time for Various Input Overdrives — Positive Transition 5mV = INPUT OVERDRIVE + 5V 5 4 20mV 3 VIN 2 – + 100mV 5.1K VOUT 0 OVERDRIVE –50 0.5 1.0 1.5 INPUT OVERDRIVE = 100mV 5 4 5mV 3 2 20mV + 5V 0 0 TA = 25oC –50 –100 TA = 25oC 0 6 1 0 –100 VIN 5.1K – + VOUT OVERDRIVE 0 2.0 0.5 1.0 1.5 TIME — µ sec TIME — µ sec August 31, 1994 1.0 0.001 0.01 40 6 1 OUT OF SATURATION OUTPUT VOLTAGE VO — mV OUTPUT VOLTAGE VO — mV TA = +25oC TA = 0 INPUT VOLTAGE VIN — mV V O— SATURATION VOLTAGE (V DC) VIN (CM) = 0 VDC RIN (CM) = 10kΩ INPUT VOLTAGE VIN — mV I N — INPUT CURRENT — nADC 80 304 2.0