LTC6912CDE-2#PBF

Overview

The LTC6912CDE-2#PBF 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. 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/output capabilities.

Feature Summary

• Digitally programmable gain settings controlled via a standard 3-wire serial interface
• Rail-to-rail input and output signal swing capabilities
• Internal half-supply reference generation for simplified single-supply operation
• Wired-OR output configuration enabling analog multiplexing functions

Applications

• Data acquisition systems requiring dynamic gain adjustment
• Automatic ranging circuits for sensor signal conditioning
• Automatic gain control loops in communication receivers

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the C grade temperature rating aligns with system requirements. Ensure the DFN-12 package footprint matches the PCB layout design. Check for availability as distribution status may vary by region.

Selection Notes

Select this model for applications requiring precise digital gain control without external resistors. The -2 suffix denotes the specific gain ladder (powers of two). 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 component belongs to the LTC6912 family of dual programmable gain amplifiers. It is designed for high-performance signal processing where noise and linearity are critical. The device integrates precision matched amplifiers into a compact surface-mount package, reducing board space compared to discrete solutions.

Replacement Considerations

LTC6912IDE-2#PBF offers an industrial temperature grade extension. LTC6912CGN-2 provides an alternative SSOP-16 package option.