Datasheet LTC1043 (Analog Devices) - 10

LTC1043
U TYPICAL APPLICATIO S Single 5V Supply, Ultra Precision Voltage Controlled Current Source with Instrumentation Amplifier Ground Referred Input and Output
5V 5V LTC1043 INPUT 3 8 + + 3 7 0V TO 2V 7 8 + 1 1/2 LT1013 6 OUTPUT LTC1052 2 AV = 1000 – 2 8 – 4 11 1 4 0.1µF 0.1µF INPUT 1µF 1µF 0.68µF 12 100Ω 99.9k – 5V 13 14 1k 4 43k V+ = 5V 6 5 0.22µF 8 7 10k 2 11 1 1N914 1 µF µF NONPOLARIZED 1 1 µF µF 100Ω 3 12 18 15 14 13 ≈ –0.5V VIN 1/2 LTC1043 1OUT = 16 17 4 100Ω INPUT AND OUTPUT VOLTAGE RANGE INCLUDES GROUND. 17 16 INPUT REFERRED OFFSET ERRORS ARE TYPICALLY 3µV WITH 5V 1µV OF NOISE ~ 0.0047 CMRR ~ 120dB 0.001µF LTC1043 • A10 OPERATES FROM A SINGLE 5V SUPPLY LTC1043 • A11
Precision Instrumentation Amplifier
5V CHOPPER AC AMPLIFIER PHASE DC 4 SENSITIVE OUTPUT AMPLIFIER 1/2 LTC1043 1/4 LTC1043 DEMODULATOR 1 5V µF 1µF + INPUT 6 5 7 3 7 11 + 1µF 1/4 LTC1043 6 5V LT1056 13 100k 2 7 2 8 1M 2 – 12 – 4 100k 100k 6 1 LT1056 OUTPUT µF 1µF –5V 14 3 + 3 4 –5V 100Ω R2 – INPUT 18 15 0.01 100k OFFSET = 10µV R1 16 17 –5V DRIFT = 0.1µV/°C 100 0.01µF Ω FULL DIFFERENTIAL INPUT CMRR = 140dB OPEN LOOP GAIN > 108 GAIN = R2/R1 + 1 IBIAS = 1nA LTC1043 • A12 1043fa 10