LTC2654BIUF-L16#TRPBF

Overview

The LTC2654BIUF-L16#TRPBF is a quad 16-bit rail-to-rail voltage output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a maximum temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and 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, a typical settling time of 8.9µs for 16-bit accuracy, and ultralow crosstalk between channels (<3nV•s). The component is housed in a 20-lead 4mm × 4mm plastic QFN package and is guaranteed monotonic over the industrial temperature range of –40°C to 85°C.

Feature Summary

• Quad 16-bit resolution with integrated 10ppm/°C max precision reference
• Rail-to-rail output buffers with <3nV•s DAC-to-DAC crosstalk
• SPI/Microwire compatible 4-wire serial interface with 50MHz clock rate
• Power-on reset configurable to zero-scale or mid-scale via PORSEL pin

Applications

• Mobile communications systems
• Process control and industrial automation
• Instrumentation equipment
• Automatic test equipment
• Automotive applications

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging format as specified in the manufacturer's documentation. Confirm the specific temperature grade 'I' indicates operation within the –40°C to 85°C range. Ensure the 'B' electrical grade designation aligns with the required ±4LSB maximum INL specification for the application design.

Selection Notes

Select this part when a quad-channel configuration with high precision is required. The -L suffix denotes a 2.5V full-scale output suitable for 2.7V to 5.5V supplies, whereas -H options provide 4.096V but require 4.5V to 5.5V supplies. The BIUF variant combines the industrial temperature range with the compact QFN footprint. Consider external reference usage if lower noise or different voltage levels are needed by connecting REFCOMP to GND at startup.

Part Context

This component belongs to the LTC2654 family of quad DACs, which also includes 12-bit variants and commercial temperature grade options. The BIUF-L16#TRPBF specifically represents the industrial grade (-I), high accuracy (-B), 16-bit resolution (-L16), QFN package (-UF), and tape-and-reel delivery (#TRPBF). It serves as a higher-performance alternative to single-channel devices like the LTC2641 while offering multi-channel integration compared to older quad DAC families.

Replacement Considerations

Public confirmed substitute part numbers: LTC2654BIUF-L16#PBF (tube packaging equivalent).