LTC2751ACUHF-16#TRPBF

Overview

The LTC2751ACUHF-16#TRPBF is a 16-bit multiplying digital-to-analog converter (DAC) from Analog Devices, operating on a single 2.7V to 5.5V supply. It features SoftSpan technology with six programmable output ranges: two unipolar (0V to 5V, 0V to 10V) and four bipolar (±2.5V, ±5V, ±10V, -2.5V to 7.5V). The device guarantees monotonicity over temperature and achieves ±1 LSB INL/DNL without adjustment. Key electrical parameters include a maximum supply current of 1µA, a settling time of 2µs to ±1 LSB, and a glitch impulse of 1nV·s. It utilizes a bidirectional parallel interface for register readback and includes an asynchronous CLR pin.

Feature Summary

• Six software-programmable output ranges via SoftSpan architecture
• Maximum 16-bit INL error of ±1 LSB over the full operating temperature range
• Bidirectional parallel interface allowing readback of all internal registers
• Asynchronous clear pin resets DAC output to 0V in any configured range

Applications

• High resolution offset and gain adjustment systems
• Process control and industrial automation equipment
• Automatic test equipment (ATE)
• Data acquisition systems

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to tape and reel packaging rather than tube packaging. Confirm the 'C' grade designation indicates a commercial temperature range of 0°C to 70°C. Ensure the component is sourced as lead-free finish parts marked with the specific part number identifier.

Selection Notes

Select this model when 16-bit accuracy with ±1 LSB INL is required across the commercial temperature range. Choose the tape and reel variant (#TRPBF) for automated surface-mount assembly processes. Consider the bidirectional I/O capability if system design requires verification of written register values before updating the DAC output.

Part Context

This component belongs to the LTC2751 family of SoftSpan DACs, which also includes 12-bit and 14-bit variants. The 'A' grade offers superior linearity compared to the 'B' grade, while the 'C' suffix denotes the commercial temperature specification. The UHF package identifies the 38-lead 5mm × 7mm plastic QFN form factor with an exposed ground pad.

Replacement Considerations

Direct replacements within the same package and specifications include the LTC2751AIUHF-16#TRPBF for industrial temperature range (-40°C to 85°C) or the LTC2751BCUHF-16#TRPBF for lower cost commercial grade applications. Verify pin compatibility and thermal characteristics when substituting.