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| Philips Semiconductors Linear Products Product specification Quad voltage comparator AU2901 DESCRIPTION The AU2901 consists of four independent precision voltage comparators, with an offset voltage specification as low as 2.0mV max for each comparator, 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 they are operated from a single power supply voltage. The AU2901 was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, the AU2901 will directly interface with MOS logic where their low power drain is a distinct advantage over standard comparators. PIN CONFIGURATION D, N Packages OUTPUT 2 OUTPUT 1 V+ INPUT 1 - INPUT 1 + INPUT 1 - INPUT 1 + 1 2 3 1 4 5 6 7 2 3 4 11 10 9 8 INPUT 4 + INPUT 4 - INPUT 3 + INPUT 3 - 14 13 12 OUTPUT 3 OUTPUT 4 GND TOP VIEW FEATURES * Wide single supply voltage range 2.0VDC to 36VDC or dual supplies 1.0VDC to 18VDC EQUIVALENT CIRCUIT V+ * Very low supply current drain (0.8mA) independent of supply voltage (1.0mW/comparator at 5.0VDC) * Low input biasing current 25nA * Low input offset current 5nA and offset voltage * 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 logic systems 3.5A 100A 3.5A 100A Q2 Q3 Q4 OUTPUT + INPUT - INPUT Q1 Q8 Q7 Q5 Q6 APPLICATIONS * A/D converters * Wide range VCO * MOS clock generator * High voltage logic gate * Multivibrators ORDERING INFORMATION DESCRIPTION 14-Pin Plastic Small Outline (SO) Package 14-Pin Plastic Dual In-Line Package (DIP) (One Comparator Only) TEMPERATURE RANGE -40C to +125C -40C to +125C ORDER CODE AU2901D AU2901N DWG # 0175D 0405B August 31, 1994 289 853-1637 13721 Philips Semiconductors Linear Products Product specification Quad voltage comparator AU2901 ABSOLUTE MAXIMUM RATINGS SYMBOL VCC VDIFF VIN PDMAX VCC supply voltage Differential input voltage Input voltage Maximum power dissipation, TA=25C (still-air)1 N package D package Output short-circuit to IIN TA TSTG TSOLD ground2 Input current (VIN<-0.3VDC)3 Operating temperature range AU2901 Storage temperature range Lead soldering temperature (10sec max) -40 to +125 -65 to +150 300 C C C 1420 1040 Continuous 50 mA mW mW PARAMETER RATING 36 or 18 36 -0.3 to +36 UNIT VDC VDC VDC NOTES: 1. Derate above 25C, at the following rates: N Package at 11.4mW/C D Package at 8.3mW/C 2. 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+. 3. 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 reestablish when the input voltage, which was negative, again returns to a value greater than -0.3VDC. August 31, 1994 290 Philips Semiconductors Linear Products Product specification Quad voltage comparator AU2901 ELECTRICAL CHARACTERISTICS V+=5VDC, AU2901: -40C, TA 125C, unless otherwise specified. SYMBOL VOS VCM PARAMETER Input offset voltage2 Input common-mode voltage range3 TEST CONDITIONS TA = 25C Over temp. TA = 25C Over temp. Keep all VINs 0VDC (or V- if need) IIN(+) or IIN(-) with output in linear range TA = 25C Over temp. IIN(+) - IIN(-) IOS Input offset current TA = 25C Over temp. VIN(-) 1VDC, VIN(+) = 0, IOL Output sink current VO 1.5VDC, TA = 25C VIN(+) 1VDC, VIN(-) = 0 VO = 5VDC, IOH Output leakage current TA = 25C VO = 30VDC, Over temp. ICC Supply current RL = on comparators, TA = 25C V+ = 30V RL 15k, V+ = 15VDC VIN(-) 1VDC, VIN(+) = 0, ISINK 4mA TA = 25C Over temp. VIN = TTL logic swing, VREF = 1.4VDC, VRL = 5VDC, RL = 5.1k, TA = 25C VRL = 5VDC, RL = 5.1k, TA = 25C 25 0.8 1.0 100 1.0 2.0 2.5 A mA 0.1 nA 6.0 5 50 16 50 200 nA nA mA 0 0 AU2901 Min Typ 2.0 9 Max 7.0 15 V+-1.5 V+-2.0 V+ UNIT mV V VIDR Differential input voltage1 V IBIAS Input bias current4 25 200 250 500 nA AV Voltage gain V/mV VOL Saturation voltage 400 300 400 700 mV tLSR Large-signal response time ns s tR Response time5 1.3 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 (or 0.3VDC below the magnitude of the negative power supply, if used). 2. At output switch point, VO 1.4VDC, RS=0 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. For larger overdrive signals, 300ns can be obtained (see Typical Performance Characteristics section). August 31, 1994 291 Philips Semiconductors Linear Products Product specification Quad voltage comparator AU2901 EQUIVALENT CIRCUIT V+ 700k 100k V+ + VC FREQUENCY CONTROL VOLTAGE INPUT 50k - 10 500pF 30k 5.1k 3.0k - + .01F V - /2 1/4AU2901 OUTPUT 1 0.1F 20k 20k V + /2 + OUTPUT 2 + - NOTES: V+ = 30VDC + 250m VDC < VC 50VDC 700H < fO = 100kHz Two-Decade High-Frequency VCO + V (12V DC) +V 2RS REF HI RS 10K + - LAMP +V + 5V IN + DC 360 2RS +VREF LOW 2N2222 - Limit Comparator + +V REF 4 100 - 100k + 5V 360 DC 5VDC + - +VREF 1.4VDC VO 10K o -12V + +V VO REF 3 - 100 100k + 5V 360 DC -12VDC TTL-to-MOS Logic Converter V+ 200k 2.0k V+ 0.1F + - VO 0 +V + REF 2 - 100k + 5V 360 DC 100k 100 +V + REF 1 - 100 100k 200k CRYSTAL 1 - 100kHz Visible Voltage Indicator Crystal-Controlled Oscillator NOTE: Input of unused comparators should be grounded. August 31, 1994 292 Philips Semiconductors Linear Products Product specification Quad voltage comparator AU2901 TYPICAL PERFORMANCE CHARACTERISTICS Supply Current 1.0 TA = I + -- SUPPLY CURRENT -- mA 0.8 -55oC TA = 0oC I N -- INPUT CURRENT -- nADC Input Current V O-- SATURATION VOLTAGE (V DC) Output Saturation Voltage 10 OUT OF SATURATION 1.0 TA = +125oC TA = - 55oC 0.01 TA = +25o 0.1 1.0 10 100 80 VIN (CM) = 0 VDC RIN (CM) = 10k 60 TA = 55oC TA = 0oC 0.6 TA = +25oC TA = +70oC TA = 125oC 40 0.1 0.4 20 0.2 RL - 0 10 20 30 40 TA = +125oC TA = +25oC TA = +70oC 0 10 20 30 40 0.001 0.01 V+ -- SUPPLY VOLTAGE -- VDC v + -- SUPPLY VOLTAGE -- VDC IO -- OUTPUT SINK CURRENT (mA) Response Time for Various Input Overdrives -- Negative Transition OUTPUT VOLTAGE VO -- mV OUTPUT VOLTAGE VO -- mV 6 5 4 3 2 1 INPUT VOLTAGE VIN -- mV 0 0 -50 VIN - + 5mV = INPUT OVERDRIVE + 5V 6 5 4 3 2 1 INPUT VOLTAGE VIN -- mV 0 0 -50 Response Time for Various Input Overdrives -- Positive Transition INPUT OVERDRIVE = 100mV 20mV 5.1K VOUT 5mV 20mV 100mV + 5V OVERDRIVE TA = 25oC 0 0.5 1.0 1.5 2.0 TIME -- sec TA = 25oC VIN - + 5.1K VOUT -100 -100 0 0.5 OVERDRIVE 1.0 1.5 2.0 TIME -- sec August 31, 1994 293 |
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