LTC6912CGN-2#TRPBF

Overview

The LTC6912CGN-2#TRPBF is a dual-channel, low-noise, digitally programmable gain amplifier (PGA) from Analog Devices. It features independent gain control for two channels via a 3-wire SPI interface. The device supports voltage gains of 0, 1, 2, 4, 8, 16, 32, and 64 V/V, all inverting. It operates on single or dual supplies ranging from 2.7V to 10.5V total. Key electrical characteristics include a maximum offset voltage of 2mV over the temperature range, channel-to-channel gain matching of 0.1dB max, and rail-to-rail input and output swing capabilities.

Feature Summary

• Digitally programmable gain settings controlled via a standard 3-wire serial interface
• Rail-to-rail input and output signal processing capability
• Low power hardware shutdown mode available in SSOP package
• Wired-OR outputs enable analog multiplexing functions

Applications

• Data acquisition systems requiring dynamic gain changing
• Automatic ranging circuits
• Automatic gain control loops

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the GN-16 package designation matches the required SSOP footprint. Ensure the -2 variant is selected for the correct binary gain ladder. Check RoHS compliance documentation for lead-free status.

Selection Notes

Select this component for applications requiring precise digital gain adjustment without external resistors. The -2 suffix provides powers-of-two gain steps suitable for binary-weighted signal conditioning. Verify supply voltage compatibility with the 2.7V to 10.5V operating range. Consider the SSOP package size for space-constrained PCB layouts.

Part Context

This part belongs to the LTC6912 family of dual programmable gain amplifiers. It is functionally similar to the LTC6912-1 but offers different gain steps. The CGN-2 designation specifies the commercial temperature grade and SSOP package. It serves as a compact solution for replacing discrete PGA designs in industrial sensors.

Replacement Considerations

LTC6912IGN-2#TRPBF: Industrial temperature grade version with identical pinout and specifications.