LTC2654CUF-L12#TRPBF

Overview

The LTC2654CUF-L12#TRPBF is a quad 12-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices, housed in a 20-lead 4mm × 4mm plastic QFN package. It features an integrated precision reference with a maximum temperature coefficient of 10ppm/°C, providing a full-scale output voltage of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and includes built-in high-performance output buffers guaranteed to be monotonic over temperature. Communication is handled via a 4-wire SPI/Microwire compatible serial interface supporting clock rates up to 50MHz.

Feature Summary

• Quad 12-bit resolution with ±1 LSB maximum Integral Nonlinearity (INL) error
• Integrated 10ppm/°C max precision reference yielding 2.5V full-scale output
• Rail-to-rail output buffers with ultralow crosstalk (<3nV•s)
• Power-on reset configurable to zero-scale or mid-scale via PORSEL pin

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the CU designation corresponds to the commercial temperature grade (0°C to 70°C) and the UF package type. Ensure compatibility with the required 2.7V to 5.5V supply range for the -L option.

Selection Notes

Select this part for applications requiring four independent 12-bit voltage outputs with high accuracy and low power consumption. The integrated reference simplifies design by eliminating external components, while the SPI interface allows for flexible system integration. Consider the 2.5V full-scale limit when designing signal chains that require higher voltage swings.

Part Context

This component belongs to the LTC2654 family, which also offers 16-bit resolution variants and options with 4.096V full-scale outputs (-H series). The CU suffix specifically denotes the commercial temperature grade within the 20-lead QFN package format. Other package options include the 16-lead narrow SSOP (GN package).

Replacement Considerations

Direct replacements within the same family include LTC2654BIUF-L12#TRPBF for industrial temperature range (-40°C to 85°C) or LTC2654BCUF-L16#TRPBF for 16-bit resolution. Verify that the replacement matches the required operating temperature and resolution specifications.