LTC2656IFE-H12#TRPBF

Overview

The LTC2656IFE-H12#TRPBF is an octal, 12-bit digital-to-analog converter (DAC) from Analog Devices. It features rail-to-rail output buffers and a precision integrated reference with a maximum temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V, providing a full-scale output of 4.096V in internal reference mode. Communication is handled via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. The component is housed in a 20-lead thermally enhanced TSSOP package and is guaranteed monotonic over the industrial temperature range of –40°C to 85°C.

Feature Summary

• Octal architecture with eight independent 12-bit DAC channels
• Precision integrated reference with 10ppm/°C max temperature coefficient
• Rail-to-rail output buffers with ultralow crosstalk (<1nV•s)
• SPI/MICROWIRE compatible 4-wire serial interface with 50MHz clock rate

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Instrumentation
• Automatic Test Equipment
• Automotive Systems

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging format as specified in the manufacturer's documentation. Confirm the specific electrical grade and temperature range requirements match the industrial specifications (-40°C to 85°C) before procurement. Ensure compatibility with the required supply voltage range of 4.5V to 5.5V for the H-grade variant.

Selection Notes

Select this part when eight isolated analog outputs are required within a compact footprint. The H-suffix indicates a 4.096V full-scale output suitable for applications needing higher voltage swings without external amplification. Consider the 20-lead TSSOP package if thermal dissipation is a concern, as it offers improved heat transfer compared to standard plastic packages. Verify that the system logic levels are compatible with the CMOS/TTL inputs.

Part Context

This component belongs to the LTC2656 family of octal DACs, which also includes 16-bit resolution variants and different package options such as QFN. The 'I' designation specifies the industrial temperature range, while 'H' denotes the 4.096V full-scale output configuration. The '#TRPBF' suffix indicates lead-free construction and tape-and-reel shipping, distinguishing it from tube-packaged equivalents like the #PBF version.

Replacement Considerations

Direct substitutes include other members of the LTC2656 family, such as the LTC2656IUFD-H12#TRPBF (QFN package) or the 16-bit LTC2656BIFE-H16#TRPBF, provided pin compatibility and resolution requirements are met. Cross-model comparisons should focus on package dimensions, thermal characteristics, and specific linearity grades.