LTC2654BIUF-H16#PBF

Overview

The LTC2654BIUF-H16#PBF is a quad, 16-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a maximum temperature coefficient of 10ppm/°C and a full-scale output voltage of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V. Each channel includes high-performance, rail-to-rail output buffers that are guaranteed monotonic over the operating temperature range. Communication is handled via a SPI/MICROWIRE compatible 4-wire serial interface supporting clock rates up to 50MHz. The component is housed in a 20-lead 4mm × 4mm plastic QFN package.

Feature Summary

• Quad 16-bit resolution with ±4LSB maximum INL error
• Integrated 4.096V reference with 10ppm/°C max temperature coefficient
• Rail-to-rail output buffers with ultralow crosstalk (<3nV•s)
• SPI/MICROWIRE compatible 4-wire serial interface up to 50MHz

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's selector guide to confirm package type, temperature grade, and lead finish. Ensure the internal reference configuration matches the system requirements for the 4.5V to 5.5V supply range. Confirm RoHS compliance status if required by the assembly process.

Selection Notes

Select this part for applications requiring four independent 16-bit voltage outputs with high accuracy and low noise. The -H suffix indicates a 4.096V full-scale output suitable for systems needing higher dynamic range. Ensure the power supply remains within the 4.5V to 5.5V range for specified performance. Consider the external reference option if a different full-scale voltage is needed.

Part Context

This component belongs to the LTC2654 family of quad DACs, which also offers 12-bit resolution and 2.5V full-scale options (-L suffix). The BIUF designation specifies the industrial temperature grade (-40°C to 85°C), the B electrical grade (±4LSB INL), and the 20-lead QFN package. It shares pin compatibility with other variants in the series for design flexibility.

Replacement Considerations

Direct pin-compatible replacements within the same package include LTC2654BCUF-H16#PBF (commercial grade) or LTC2654BIUF-L16#PBF (2.5V full-scale). For different resolutions, LTC2654BIUF-H12#PBF provides 12-bit performance. Verify temperature range and linearity specifications when substituting.