LTC2655IGN-H12#TRPBF

Overview

The LTC2655IGN-H12#TRPBF is a quad 12-bit digital-to-analog converter (DAC) featuring an integrated 4.096V full-scale reference and I²C interface. It operates from a 4.5V to 5.5V supply and utilizes a 16-lead narrow SSOP package. The device includes high-performance rail-to-rail output buffers guaranteed monotonic over temperature, with a maximum integral nonlinearity of ±1 LSB. Key electrical parameters include a settling time of 3.9µs for 12-bit accuracy, a supply current of 1.7mA with the internal reference active, and a power-on reset function selectable between zero-scale or mid-scale via the PORSEL pin.

Feature Summary

• Quad 12-bit resolution with integrated 4.096V reference and rail-to-rail output buffers
• I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes
• Guaranteed monotonic operation over the industrial temperature range (-40°C to 85°C)
• Selectable power-on reset to zero-scale or mid-scale via the PORSEL pin

Applications

• Mobile communications systems
• Process control and industrial automation
• Instrumentation equipment
• Automatic test equipment
• Automotive applications

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging when sourcing this component. Confirm that the -H designation aligns with system requirements for a 4.5V minimum supply voltage and 4.096V full-scale output. Ensure the GN package type matches the PCB footprint design constraints.

Selection Notes

Select this part for applications requiring four independent voltage outputs with precise calibration and low crosstalk. The -H variant is suitable for systems operating strictly within the 4.5V to 5.5V supply range. Consider the external reference mode if a different full-scale voltage is needed, as the output span becomes twice the external reference voltage.

Part Context

This component belongs to the LTC2655 family of quad DACs, which also offers 16-bit resolution variants and commercial temperature grade options. The -IGN suffix indicates the Industrial temperature grade (-40°C to 85°C) and the Narrow SSOP package. Other family members include the LTC2655CGN-L12 and LTC2655IUF-H12, differing in resolution, package style, or temperature rating.

Replacement Considerations

Direct substitutes within the same package and specification include other LTC2655 variants such as LTC2655IGN-L12#TRPBF for lower voltage operation or LTC2655BCGN-H12#TRPBF for higher linearity grades. Cross-package replacements like the QFN version require schematic and layout modifications.