Datasheet LT1457 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Dual, Precision JFET Input Op Amp |
| Pages / Page | 8 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. Input Bias and Offset Current vs. … |
| File Format / Size | PDF / 226 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Input Bias and Offset Current vs. Input Bias Current Over. Temperature
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LT1457
W U TYPICAL PERFORMANCE CHARACTERISTICS Input Bias and Offset Current vs Input Bias Current Over Temperature the Common-Mode Range Warm-Up Drift
1000 160 150 VS = ±15V V V S = ±15V S = ±15V 140 VCM = 0V TA = 25°C 300 WARMED UP µV) 120 120 100 100 S8 PACKAGE TA = 70°C 90 80 BIAS CURRENT 60 30 60 40 N8 PACKAGE INPUT BIAS CURRENT (pA) 10 20 30 OFFSET CURRENT CHANGE IN OFFSET VOLTAGE ( 0 INPUT BIAS AND OFFSET CURRENT (pA) TA = 25°C 3 –20 0 0 25 50 75 100 –15 –10 –5 0 5 10 15 0 1 2 3 4 5 AMBIENT TEMPERATURE (°C) COMMON-MODE INPUT VOLTAGE (V) TIME AFTER POWER ON (MINUTES) LT1457 • TPC01 LT1457 • TPC02 LT1457 • TPC03
Input Offset Voltage Distribution Long Term Drift of N8 Package Voltage Gain vs Temperature Representative Units
24 1000 50 VS = ±15V 900 DUALS VS = ±15V VS = ±15V 40 21 TA = 25°C (1800 OP AMPS) R V L = 2k O = ±10V TA = 25°C TESTED FROM 3 30 µV) 18 RUNS 300 20 RL = 1k 15 10 12 100 0 –10 9 PERCENT OF UNITS –20 VOLTAGE GAIN (V/mV) 6 30 –30 OFFSET VOLTAGE CHANGE ( 3 –40 0 10 –50 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 –50 –25 0 25 50 75 100 0 1 2 3 4 5 INPUT OFFSET VOLTAGE (mV) TEMPERATURE (°C) TIME (MONTHS) LT1457 • TPC04 LT1457 • TPC05 LT1457 • TPC06
Voltage Noise vs Frequency 0.1Hz to 10Hz Noise Channel Separation vs Frequency
100 160 VS = ±15V VS = ±15V √Hz) 70 TA = 25°C TA = 25°C 140 LIMITED BY 50 µV/DIV) THERMAL RS = 10Ω 120 INTERACTION AT DC = 132dB 30 LIMITED BY PIN TO 100 PIN CAPACITANCE 20 V NOISE VOLTAGE (1 S = ±15V CHANNEL SEPARATION (dB) 80 TA = 25°C VIN = 20VP-P TO 5kHz RS = 1k RMS VOLTAGE NOISE DENSITY (nV/ 1/f CORNER = 28Hz RL = 2k 10 60 3 10 30 100 300 1k 3k 10k 0 2 4 6 8 10 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) TIME (SECONDS) FREQUENCY (Hz) LT1457 • TPC07 LT1457 • TPC08 LT1457 • TPC09 4
W U TYPICAL PERFORMANCE CHARACTERISTICS Input Bias and Offset Current vs Input Bias Current Over Temperature the Common-Mode Range Warm-Up Drift
1000 160 150 VS = ±15V V V S = ±15V S = ±15V 140 VCM = 0V TA = 25°C 300 WARMED UP µV) 120 120 100 100 S8 PACKAGE TA = 70°C 90 80 BIAS CURRENT 60 30 60 40 N8 PACKAGE INPUT BIAS CURRENT (pA) 10 20 30 OFFSET CURRENT CHANGE IN OFFSET VOLTAGE ( 0 INPUT BIAS AND OFFSET CURRENT (pA) TA = 25°C 3 –20 0 0 25 50 75 100 –15 –10 –5 0 5 10 15 0 1 2 3 4 5 AMBIENT TEMPERATURE (°C) COMMON-MODE INPUT VOLTAGE (V) TIME AFTER POWER ON (MINUTES) LT1457 • TPC01 LT1457 • TPC02 LT1457 • TPC03
Input Offset Voltage Distribution Long Term Drift of N8 Package Voltage Gain vs Temperature Representative Units
24 1000 50 VS = ±15V 900 DUALS VS = ±15V VS = ±15V 40 21 TA = 25°C (1800 OP AMPS) R V L = 2k O = ±10V TA = 25°C TESTED FROM 3 30 µV) 18 RUNS 300 20 RL = 1k 15 10 12 100 0 –10 9 PERCENT OF UNITS –20 VOLTAGE GAIN (V/mV) 6 30 –30 OFFSET VOLTAGE CHANGE ( 3 –40 0 10 –50 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 –50 –25 0 25 50 75 100 0 1 2 3 4 5 INPUT OFFSET VOLTAGE (mV) TEMPERATURE (°C) TIME (MONTHS) LT1457 • TPC04 LT1457 • TPC05 LT1457 • TPC06
Voltage Noise vs Frequency 0.1Hz to 10Hz Noise Channel Separation vs Frequency
100 160 VS = ±15V VS = ±15V √Hz) 70 TA = 25°C TA = 25°C 140 LIMITED BY 50 µV/DIV) THERMAL RS = 10Ω 120 INTERACTION AT DC = 132dB 30 LIMITED BY PIN TO 100 PIN CAPACITANCE 20 V NOISE VOLTAGE (1 S = ±15V CHANNEL SEPARATION (dB) 80 TA = 25°C VIN = 20VP-P TO 5kHz RS = 1k RMS VOLTAGE NOISE DENSITY (nV/ 1/f CORNER = 28Hz RL = 2k 10 60 3 10 30 100 300 1k 3k 10k 0 2 4 6 8 10 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) TIME (SECONDS) FREQUENCY (Hz) LT1457 • TPC07 LT1457 • TPC08 LT1457 • TPC09 4
