LTC2656CUFD-L12#TRPBF

Overview

The LTC2656CUFD-L12#TRPBF is an octal, 12-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices. It features a precision integrated reference with a maximum temperature coefficient of 10ppm/°C and operates on a single 2.7V to 5.5V supply. The device includes built-in high-performance output buffers and guarantees monotonicity over the full operating temperature range. Communication is handled via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. It is housed in a 20-lead 4mm × 5mm QFN package.

Feature Summary

• Octal architecture with 12-bit resolution and rail-to-rail voltage outputs
• Precision internal reference with ±10ppm/°C maximum temperature coefficient
• Ultralow DAC-to-DAC crosstalk (<1nV•s typical)
• Power-on reset circuit configurable for zero-scale or mid-scale initialization

Applications

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

Procurement Notes

Verify that the specific ordering suffix #TRPBF corresponds to the tape and reel packaging format as defined in the manufacturer's documentation. Confirm that the C-grade temperature rating (0°C to 70°C) aligns with the intended operational environment requirements before finalizing procurement specifications.

Selection Notes

Select this component when eight independent 12-bit channels are required within a compact footprint. The -L suffix indicates a 2.5V full-scale output span derived from the internal reference, suitable for low-voltage single-supply systems. Ensure the application does not require the higher accuracy or extended temperature range provided by the B-grade or I-grade variants respectively.

Part Context

This part belongs to the LTC2656 family of octal DACs, which also offers 16-bit resolution options and alternative full-scale voltage configurations. The CUFD designation specifies the commercial temperature grade and the 20-lead plastic QFN package type. The L12 suffix denotes the 12-bit resolution combined with the 2.5V internal reference setting.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2656 variants such as the LTC2656IUFD-L12#TRPBF for industrial temperature ranges or LTC2656BCUFD-L12#TRPBF for tighter linearity specifications.