LTC2655BIUF-H16#TRPBF

Overview

The LTC2655BIUF-H16#TRPBF is a quad 16-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices. It features an integrated reference providing a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device utilizes a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±4LSB, guaranteed monotonicity over temperature, and a settling time of 9.1µs for 16-bit accuracy. It is housed in a 20-lead 4mm × 4mm QFN package.

Feature Summary

• Quad 16-bit resolution with ±4LSB maximum INL error
• Integrated 4.096V full-scale reference operating on 4.5V to 5.5V supply
• Rail-to-rail output buffers with ultralow crosstalk (<1nV•s)
• I²C interface with selectable power-on reset to zero-scale or mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging. Confirm the 'I' temperature grade corresponds to the –40°C to 85°C range and the 'B' electrical grade ensures ±4LSB maximum INL. Ensure the UF package designation matches the required 20-lead QFN footprint for PCB layout compatibility.

Selection Notes

Select this part when a quad DAC configuration with high precision (16-bit) and low offset is required. The -H option mandates a minimum supply voltage of 4.5V, distinguishing it from the -L option which supports 2.7V operation. Consider the asynchronous LDAC pin for simultaneous multi-channel updates if timing synchronization is critical.

Part Context

This component belongs to the LTC2655 family of quad DACs. Variants differ by resolution (12-bit vs 16-bit), internal reference voltage (2.5V vs 4.096V), and temperature grade (Commercial vs Industrial). The BIUF-H16 specifically denotes the Industrial grade, High-voltage reference, QFN package, and 16-bit accuracy variant.

Replacement Considerations

Direct substitutes within the same package and specification include other LTC2655BIUF-H16 variants with different shipping formats (e.g., tube instead of tape and reel). Cross-model replacements like the LTC2654 require SPI interface adaptation.