LTC6912CGN-2#PBF

Overview

The LTC6912CGN-2#PBF is a dual-channel, low-noise digitally programmable gain amplifier (PGA) housed in a 16-pin SSOP package. It features independent gain control via a 3-wire SPI interface, supporting gains of 0, 1, 2, 4, 8, 16, 32, and 64 V/V for the -2 variant. The device operates on single or dual supplies ranging from 2.7V to 10.5V total. Key electrical specifications 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.

Feature Summary

• Dual channels with independent digital gain programming via serial interface
• Rail-to-rail input and output signal swing capabilities
• Low power hardware shutdown function available on GN-16 package
• Wired-OR outputs enable analog multiplexing functionality

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and standard tube packaging. Confirm the CGN designation corresponds to the commercial temperature grade (-40°C to 85°C) and the GN-16 SSOP package type. Ensure the -2 suffix matches the required binary gain steps (powers of two) rather than the linear steps of the -1 variant.

Selection Notes

Select this component when precise, digitally controlled amplification is required for dual-channel signals. The -2 suffix provides logarithmic gain steps suitable for wide dynamic range applications. Verify that the supply voltage range and current consumption align with system power constraints. Consider the SSOP package size for board space limitations.

Part Context

This part belongs to the LTC6912 family of dual programmable gain amplifiers. The -2 suffix distinguishes it from the -1 variant by offering gain settings based on powers of two (0, 1, 2, 4, 8, 16, 32, 64 V/V). The CGN-2#PBF specifically denotes the commercial grade version in the 16-lead narrow SSOP package with lead-free termination.

Replacement Considerations

LTC6912IGN-2#PBF offers the same electrical performance but with an extended industrial temperature range. LTC6912HGN-2#PBF provides operation up to 125°C. For DFN package options, consider LTC6912CDE-2#PBF.