LTC6912IDE-1#PBF

Overview

The LTC6912IDE-1 is a dual-channel, low-noise, digitally programmable gain amplifier (PGA) from Analog Devices. It features independent gain control for both channels via a 3-wire SPI interface. The device supports voltage gains of 0, 1, 2, 5, 10, 20, 50, and 100V/V with inverting configurations. Operating on single or split supplies ranging from 2.7V to 10.5V total, it offers rail-to-rail input and output capabilities. Key electrical specifications include a maximum offset voltage of 2mV over the temperature range, channel-to-channel gain matching of 0.1dB maximum, and an input noise density of 12.6nV/√Hz.

Feature Summary

• Dual channels with independent digital gain programming via a 3-wire serial interface
• Rail-to-rail input and output signal processing capability
• High channel-to-channel isolation and precise gain matching
• Internal half-supply reference generation for single supply operation

Applications

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

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to 85°C). Confirm the 'DE' package designation corresponds to the 12-lead DFN format. Ensure '#PBF' denotes lead-free compliance status. Cross-reference the datasheet revision date against the manufacturing lot to ensure specification validity.

Selection Notes

Select this component when dual-channel precision amplification with digital control is required. The -1 suffix provides gains up to 100V/V, suitable for high-gain signal conditioning. Verify that the 3-wire SPI interface aligns with the host controller's available digital lines. Consider the DFN package size constraints relative to the PCB layout requirements.

Part Context

This part belongs to the LTC6912 family of dual programmable gain amplifiers. The series includes variants with different gain steps, such as the LTC6912-2 which offers powers-of-two gains. The family is designed for compact designs requiring minimal board space while maintaining low noise performance and high dynamic range.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.