LTC2656BCUFD-H16#TRPBF

Overview

The LTC2656BCUFD-H16#TRPBF is an octal 16-bit rail-to-rail digital-to-analog converter (DAC) in a 20-lead QFN package. It features a precision integrated reference yielding a 4.096V full-scale output, operating on a 4.5V to 5.5V supply. The device guarantees monotonicity and offers a maximum INL error of ±4LSB. Communication occurs via a 4-wire SPI/MICROWIRE interface with clock rates up to 50MHz. Key specifications include a settling time of 7.9µs for 16-bit accuracy, ultralow crosstalk (<3nV•s), and power-on reset options to zero-scale or mid-scale.

Feature Summary

• Octal 16-bit resolution with ±4LSB maximum integral nonlinearity (INL)
• Integrated 4.096V precision reference with 10ppm/°C temperature coefficient
• Rail-to-rail output buffers with <3nV•s DAC-to-DAC crosstalk
• SPI/MICROWIRE compatible serial interface supporting 50MHz clock rates

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the H-grade designation aligns with system requirements for a 4.5V minimum supply voltage. Ensure the B-grade electrical specification meets the required linearity performance standards for the intended application environment.

Selection Notes

Select this part for applications requiring eight independent 16-bit channels within a compact footprint. The H-option is suitable for systems utilizing 5V logic and power rails. Consider the L-option if a lower 2.7V supply voltage is necessary. Verify thermal management capabilities as the QFN package relies on PCB ground plane connection for heat dissipation.

Part Context

This component belongs to the LTC2656 family of octal DACs, which also includes 12-bit variants and commercial temperature grade options. The BCUF suffix denotes the B-grade accuracy level and the 20-lead 4mm × 5mm plastic QFN package type. The TRPBF suffix specifies tape and reel delivery with lead-free finish.

Replacement Considerations

Compatible substitutes within the same family include LTC2656BIUFD-H16#TRPBF for industrial temperature range operation. For 12-bit resolution requirements, the LTC2656IUFD-H12#TRPBF serves as a functional alternative. Direct pin-compatible replacements require matching the package outline and electrical characteristics.