LTC6912HGN-1#TRPBF

Overview

The LTC6912HGN-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 voltage gains of 0, 1, 2, 5, 10, 20, 50, and 100V/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 extended temperature range, a typical input noise density of 15.1nV/√Hz at high gains, and a slew rate of 16V/µs. The component is housed in a 16-lead narrow plastic SSOP package.

Feature Summary

• Digitally programmable gain settings controlled through a standard 3-wire serial interface
• Rail-to-rail input and output signal swing capabilities
• High channel-to-channel isolation and tight gain matching between amplifiers
• Low power hardware shutdown mode available in the GN package

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the H grade designation corresponds to the extended operating temperature range of –40°C to 125°C. Ensure the GN package type matches the required 16-lead SSOP footprint for PCB layout compatibility.

Selection Notes

Select this part for applications requiring precise digital gain control with minimal external components. The H grade is necessary for environments exceeding 85°C. Verify that the supply voltage range accommodates the system's rail requirements and that the SPI interface timing aligns with the host controller specifications.

Part Context

This component belongs to the LTC6912 family of dual programmable gain amplifiers. The '1' suffix denotes the specific gain ladder configuration including 0, 1, 2, 5, 10, 20, 50, and 100V/V. The 'H' indicates the extended industrial temperature grade, while 'GN' specifies the 16-lead SSOP package format.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.