Datasheet LTC1042 (Analog Devices) - 3

LTC1042
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
REXT External Timing Resistor Resistor connected between V + ● 100 10,000 kΩ and OSC Pin fS Sampling Frequency V+ = 5V, TA = 25°C 5 Hz REXT =1MΩ, CEXT = 0.1µF
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 4:
Width error = (VU –VL – 2 • WIDTH/2) (where VU = upper band of a device may be impaired. limit and VL = lower band limit).
Note 2:
Applies over input voltage range limit and includes gain
Note 5:
RIN is guaranteed by design and is not tested. RIN = 1/(fS x 66pF). uncertainty.
Note 6:
Average supply current = TD • lS(ON) • fS + (1 –TD fS) IS(OFF).
Note 3:
Center error = [(VU +VL)/2 – CENTER] (where VU = upper band
Note 7:
Response time is set by an internal oscillator and is independent limit and VL = lower band limit). of overdrive voltage. TD is guaranteed by correlation test and is not directly measured.
W U TYPICAL PERFOR A CE CHARACTERISTICS Normalized Sampling Frequency I vs V+, Temperature S(ON) vs V+ Sampling Rate vs REXT CEXT
20 2.2 103 R = 1M, C = 0.1µF 18 2.0 CEXT = 1000pF 16 1.8 102 14 TA = 125°C CEXT = 0.01µF (Hz) 12 °C) 25 S °C 1.6 (mA) 10 1.4 10 –55°C AT 5V, 25 I S(ON) 8 S (f 1.2 CEXT = 0.1µF 6 TA = 25°C SAMPLE RATE, f 1.0 1 4 125°C C C EXT = 0.05µF EXT = 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) LTC1042 • TPC01 LTC1042 • TPC02 LTC1042 • TPC03
Response Time vs Supply Voltage Response Time vs Temperature RIN vs Sampling Frequency
110 130 1011 T V+ = 5V A = 25°C 120 • 66pF) 100 S 110 s) s) (1/F 1010 µ µ ( IN D 90 D 100 90 ) 80 (Ω 109 80 70 70 RESPONSE TIME, t RESPONSE TIME, t 60 108 60 50 50 40 AVERAGE INPUT RESISTANCE, R 107 2 4 6 8 10 12 14 16 –50 –25 0 25 50 75 100 125 1 102 104 103 10 SUPPLY VOLTAGE, V+ (V) AMBIENT TEMPERATURE, TA (°C) SAMPLING FREQUENCY, fS (Hz) LTC1042 • TPC04 LTC1042 • TPC05 LTC1042 • TPC06 1042fa 3