LTC1047CN8#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The Analog Devices LTC1047CN8#PBF is a micropower, high-performance dual zero-drift operational amplifier. It integrates internal sampling capacitors, eliminating the need for external components typically required by chopper amplifiers. The device features a maximum offset voltage of 10µV and a drift of 50nV/°C. It operates on a single supply ranging from 4.75V to 16V with a supply current of 80µA per amplifier. Key electrical specifications include a minimum CMRR of 110dB, a minimum PSRR of 105dB, and a gain bandwidth product of 200kHz. The output swings to ground, and the common mode range includes the negative supply rail.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrated sample-and-hold capacitors minimize external component requirements
• Zero-drift architecture ensures high DC precision with low offset voltage
• Single-supply operation compatible with standard TTL voltage levels
• Pin-compatible with industry-standard dual operational amplifiers

Instrumentation, Op Amps, Buffer Amps Applications

• Thermocouple Amplifiers
• Electronic Scales
• Battery Powered Instrumentation
• Strain Gauge Amplifiers
• Remote Located Sensors

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package type and temperature rating during procurement. The CN8 suffix indicates an 8-lead PDIP package with a commercial operating temperature range of 0°C to 70°C. Confirm that the application environment remains within these thermal limits. Ensure the power supply voltage stays between 4.75V and 16V to maintain guaranteed performance parameters. Check for any updated datasheet revisions that may affect pinout or electrical characteristics.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high DC accuracy and low power consumption are critical. The integrated capacitors simplify PCB layout compared to other chopper amplifiers. It serves as a direct replacement for many standard dual op amps while offering superior offset and drift performance. Consider the 70ms overload recovery time when designing circuits prone to saturation. The wide common mode range including ground makes it suitable for single-supply sensor interfaces.

Instrumentation, Op Amps, Buffer Amps Part Context

The LTC1047 belongs to Analog Devices' family of micropower zero-drift operational amplifiers. It utilizes a chopper stabilization technique to achieve ultra-low offset voltage and drift. The CN8 variant specifically refers to the plastic dual in-line package version. This series is designed for applications requiring precise signal conditioning with minimal power draw.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The datasheet states the LTC1047 is a plug-in replacement for most dual op amps. No specific substitute part numbers are listed in the provided documentation.