LTC2656BIUFD-H16#TRPBF

Overview

The LTC2656BIUFD-H16#TRPBF is an octal 16-bit rail-to-rail digital-to-analog converter (DAC) family member manufactured by Analog Devices Inc. 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 from a 4.5V to 5.5V supply voltage, providing a full-scale output of 4.096V when using the internal reference. Communication is handled via a SPI/MICROWIRE compatible 4-wire 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 7.9µs 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
• Integrated precision reference with 10ppm/°C max temperature coefficient
• Rail-to-rail output buffers with <1nV•s DAC-to-DAC crosstalk
• SPI/MICROWIRE compatible 4-wire serial interface

Applications

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

Procurement Notes

Verify that the component matches the specific package type and temperature grade required for the application. Confirm the ordering suffix corresponds to the tape and reel packaging format. Ensure the internal reference configuration aligns with the system's power supply constraints, as this variant requires a 4.5V to 5.5V supply range.

Selection Notes

Select this part when eight independent 16-bit voltage outputs are needed in a compact form factor. The H-option provides a 4.096V full-scale output suitable for systems requiring higher dynamic range compared to the L-option. Consider the 20-lead QFN package for space-constrained designs requiring thermal performance. Verify compatibility with the host controller's SPI clock speed and voltage levels.

Part Context

This component belongs to the LTC2656 family of octal DACs, which also includes variants with different resolutions (12-bit), accuracy grades (C-grade with ±12LSB INL), and full-scale voltages (L-option with 2.5V). The BIUFD-H16 designation specifically indicates the Industrial temperature grade (-40°C to 85°C), B-grade accuracy, UFD QFN package, H-option reference voltage, and 16-bit resolution.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2656BCUFD-H16#TRPBF (Commercial grade) or LTC2656CIUFD-H16#TRPBF (Lower accuracy grade). For applications requiring external references, the LTC2656 series supports this mode, but ensure the external reference voltage does not exceed VCC/2.