LTC1047 - Dual Micropower Zero-Drift Operational Amplifier with Internal Capacitors

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.

Features
  • No External Components Required
  • Maximum Offset Voltage:10µV
  • Maximum Offset Voltage Drift:50nV/°C
  • Supply Current: 80µA
  • Minimum CMRR: 110dB
  • Minimum PSRR 110dB
  • 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
Typical Application
LTC1047 Typical Application
LTC1047 Typical Application
Applications
  • Thermocouple Amplifiers
  • Electronic Scales
  • Battery Powered Instrumentation
  • Strain Gauge Amplifiers
  • Remote Located Sensors
Packaging
LTC1047 Package Drawing
LTC1047 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1047CN8#PBFN-8C$6.00$4.85
LTC1047CSW#PBFSW-16C$6.85$5.40
LTC1047CSW#TRPBFSW-16C$5.46
Datasheet
Application Note
Reliability Data
CAD Symbol
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LTC1047 - Dual Micropower Zero-Drift Operational Amplifier with Internal Capacitors
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R062 Reliability Data
LTC1047 Footprints and Symbols