LTC1040 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operatingtemperature range otherwise specifications are at TA = 25 ° C. Test conditions: V+ = 5V, V – = – 5V, unless otherwise specifiedLTC1040M/LTC1040CSYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS STROBE Input (Note 7) VIH Logic “1” Input Voltage V+ = 5.25V ● 2.0 1.6 V VIL Logic “0” Input Voltage V+ = 4.75V 1.0 0.8 V REXT External Timing Resistor Resistor Tied Between V+ and OSC Pin ● 100 10,000 kΩ fS Sampling Frequency REXT = 1M, CEXT = 0.1µF 5 Hz Note 1: Absolute Maximum Ratings are those values beyond which the life Note 5: Average supply current = tD • lS(ON) • fS + (1 – tD x fS) • lS(OFF). of a device may be impaired. Note 6: Response time is set by an internal oscillator and is independent Note 2: Applies over input voltage range limit and includes gain of overdrive voltage. uncertainty. Note 7: Inputs and outputs also capable of meeting EIA/JEDEC B series Note 3: Tracking error = (VIN1 – VIN2)/ VIN1. CMOS specifications. Note 4: RIN is guaranteed by design and is not tested. RIN = 1/(fS • 33pF). WUTYPICAL PERFOR A CE CHARACTERISTICSPeak Supply CurrentNormalized Sampling Frequencyvs Supply Voltagevs Supply Voltage and TemperatureSampling Rate vs REXT, CEXT 20 2.2 103 R = 1M 18 C 2.0 C = 0.1µF EXT = 1000pF 16 1.8 102 CEXT = 0.01µF 14 °C) TA = 125°C (Hz) C 12 S 25°C 1.6 EXT = 0.05µF (mA) 10 1.4 10 –55°C AT 5V, 25 I S(ON) 8 S/f C S 1.2 EXT = 0.1µF 6 (f TA = 25°C SAMPLE RATE, f 1.0 1 4 125°C CEXT = 1µF 2 NORMALIZED SAMPLING FREQUENCY 0.8 TA = –55°C 0 0.6 0.1 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 100k 1M 10M SUPPLY VOLTAGE, V+ (V) SUPPLY VOLTAGE, V+ (V) REXT (Ω) LTC1040 • TPC01 LT1040 • TPC03 LTC1040 • TPC02 Response TimeInput ResistanceVP-P Output Voltagevs Supply Voltagevs Sampling Frequencyvs Load Current ) Ω 300 1011 0 T (V) A = 25°C P-P 0.2 250 • 33pF) ( –V S + 0.4 1010 µs) (1/f 0.6 ( 200 IN D V+ = 10V 0.8 V+ = 16V 109 150 1.0 V+ = 2.8V 1.2 100 1.4 RESPONSE TIME, t 108 V+ = 5V 1.6 50 1.8 0 107 TYPICAL OUTPUT VOLTAGE DROP, V 2.0 AVERAGE INPUT RESISTANCE, R 2 4 6 8 10 12 14 16 1 102 104 103 10 0 1 2 3 4 5 6 7 8 9 10 SAMPLING FREQUENCY, f SUPPLY VOLTAGE, V+ (V) S (Hz) LOAD CURRENT, IL (mA) LTC1040 • TPC05 LTL1040 • TPC04 LTC1040 • TPC06 1040fa 3
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