LTC2656BCUFD-L16#TRPBF

Overview

The LTC2656BCUFD-L16#TRPBF is an octal 16-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 guarantees monotonicity over the operating temperature range. The device operates on a single 2.7V to 5.5V supply, providing a full-scale output of 2.5V. It communicates via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±4LSB at 16 bits, a settling time of 8.9µs for 16-bit accuracy, and ultralow DAC-to-DAC crosstalk of less than 1nV•s.

Feature Summary

• Octal 16-bit resolution with ±4LSB maximum INL error
• Precise integrated reference with 10ppm/°C max temperature coefficient
• Rail-to-rail output buffers guaranteed monotonic over temperature
• SPI/MICROWIRE compatible 4-wire serial interface with 50MHz clock rate

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the B grade corresponds to the ±4LSB maximum INL specification required for the application. Ensure the commercial temperature grade (C) covering 0°C to 70°C aligns with the environmental constraints of the target system design.

Selection Notes

Select the LTC2656BCUFD-L16#TRPBF when eight independent 16-bit voltage outputs are required in a compact form factor. The L option provides a fixed 2.5V full-scale output suitable for 2.7V to 5.5V supply systems. Consider the external reference mode if a different full-scale voltage is needed, as the output span becomes two times the external reference voltage applied to the REFIN/OUT pin.

Part Context

This part belongs to the LTC2656 family of octal DACs available in 16-bit and 12-bit resolutions. The UFD suffix denotes the 20-lead 4mm × 5mm plastic QFN package. The C grade specifies the commercial temperature range, while the B grade ensures tighter linearity performance compared to the standard C grade parts within the same product family.

Replacement Considerations

Direct replacements within the same package and pinout include other LTC2656 variants such as the BIUFD-L16#TRPBF for industrial temperature ranges or CUFD-L16#TRPBF for lower accuracy requirements. Verify that any substitute maintains the 16-bit resolution and ±4LSB INL specification.