LTC6912CDE-2#TRPBF

Overview

The LTC6912CDE-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. 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 handling capability
• Internal half-supply reference generation for simplified single-supply operation
• Low power hardware shutdown mode available in specific package variants

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the C grade meets the required operating temperature specifications for your application environment. Ensure compatibility with the 12-pin DFN package footprint during PCB layout planning.

Selection Notes

Select this component when precise digital gain control is required without external resistors. The -2 suffix denotes the specific binary gain ladder suitable for applications needing powers-of-two scaling. Consider the DFN package size constraints and thermal dissipation requirements relative to the SSOP alternative.

Part Context

This part belongs to the LTC6912 family of dual programmable gain amplifiers. It is distinct from the -1 variant which offers different gain steps. The device integrates matched amplifiers designed to minimize channel mismatch errors while occupying minimal printed circuit board space.

Replacement Considerations

LTC6912CDE-2#PBF is the tube version of the same functional device. LTC6912IDE-2#TRPBF offers the industrial temperature grade variant.