Dual Micropower Zero-Drift Operational Amplifier with Internal Capacitors
Signal Conditioning Operational Amplifiers (Op Amps) Precision Amplifiers
Docket:LTC1047 Dual Micropower Zero-Drift Operational Amplifier with Internal Capacitors DESCRIPTIO
The LTC®1047 is a micropower, high performance dual zero-drift operational amplifier. The sample-and-hold capacitors usually required by other chopper amplifiers are integrated on-chip, minimizing the need for external components. The LTC1047 has a typical offset voltage of 3µV, drift of 10nV/°C, input noise voltage typically 3.5µVP-P, and typical voltage gain of 150dB. The common mode rejection is 110dB minimum, with minimum power supply rejection of 105dB. The LTC1047 also offers a 0.2V/µs slew rate and a gain bandwidth product of 200kHz. Overload recovery time from saturation is 70ms, four times faster than chopper amplifiers with external capacitors. The LTC1047 is available in a standard plastic 8-pin PDIP as well as a 16-pin SW package. The LTC1047 is a plug-in replacement for most dual op amps with improved DC performance and substantial power savings.
, LTC and LT are registered trademarks of Linear Technology Corporation. FEATURES No External Components Required Maximum Offset Voltage: 10µV Maximum Offset Voltage Drift: 50nV/°C Supply Current: 80µA Minimum CMRR: 110dB Minimum PSRR: 105dB Single Supply Operation: 4.75V to 16V Common Mode Range Includes GND Output Swings to GND Typical Overload Recovery Time: 70ms Pin Compatible with Industry Standard Dual Op Amps APPLICATIO S Thermocouple Amplifiers Electronic Scales Battery Powered Instrumentation Strain Gauge Amplifiers Remote Located Sensors TYPICAL APPLICATIO
5V 4 1/2 LTC1043 IN 18 3 CS 1µF 2 +IN 6 16 0.1µF 17 5 CH 1µF 15 100 Micropower Single Supply Instrumentation Amplifier
100k 5V 6 CS = CH = 1µF 100 CMRR (dB) 80 60
1/2 LTC1047 7 VOUT 5 + 40 20 100 4 GAIN = 1000 CMRR > = 120dB AT 60Hz VOS = < 10µV IS = 62µA (INCLUDING THE LTC1043) LTC1047 TA01 1k 10k 100k FREQUENCY OF COMMON MODE SIGNAL
LT1047 TA02 U U U CMRR vs Frequency 1047fa 1 LTC1047
ABSOLUTE AXI U RATI GS
Total Supply Volta...