LTC6912CDE-1#TRPBF

Overview

The LTC6912CDE-1#TRPBF is a dual-channel, low-noise, digitally programmable gain amplifier (PGA) from Analog Devices. It features independent gain control for each channel via a 3-wire SPI interface. The device supports gains of 0, 1, 2, 5, 10, 20, 50, and 100V/V with all settings being 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, a channel-to-channel gain matching of 0.1dB max, and a typical input noise density of 12.6nV/√Hz. The package is a 12-lead DFN.

Feature Summary

• Digitally programmable gain amplifiers with independent channel control via a 3-wire serial interface
• Rail-to-rail input and output signal swing capabilities
• Low power hardware shutdown mode available in specific package variants
• Wired-OR outputs enable analog multiplexing functionality

Applications

• Data acquisition systems
• Automatic gain control circuits
• Dynamic gain changing applications
• Automatic ranging circuits

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the C grade temperature range meets application requirements. Check for lead-free compliance markings as indicated by the PBF suffix. Ensure the DFN-12 package footprint matches the PCB design constraints.

Selection Notes

Select this component for applications requiring precise digital gain adjustment without external resistors. The -1 suffix denotes the specific gain ladder (0, 1, 2, 5, 10, 20, 50, 100V/V). Consider the DFN-12 package for space-constrained designs. Verify supply voltage compatibility with the 2.7V to 10.5V operating range.

Part Context

This part belongs to the LTC6912 family of dual programmable gain amplifiers. It is functionally similar to the LTC6912IDE-1 but differs in temperature grade and packaging format. The family offers matched amplifiers suitable for high-performance signal conditioning tasks requiring low noise and high linearity.

Replacement Considerations

LTC6912IDE-1#TRPBF is a direct replacement with identical electrical specifications but an industrial temperature grade.