LTC1047CSW#PBF

The LTC1047 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.

Applications

• Thermocouple Amplifiers
• Electronic Scales
• Battery Powered Instrumentation
• Strain Gauge Amplifiers
• Remote Located Sensors
• Micropower Single Supply Instrumentation Amplifier
• Precise DC Full-Wave Rectifier (Absolute Value Circuit)
• Ultralow Noise Micropower Chopper

Key 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