LTC2751BIUHF-16#TRPBF

Overview

The LTC2751BIUHF-16#TRPBF is a 16-bit multiplying digital-to-analog converter with parallel input and current output. It operates from a single 2.7V to 5.5V supply and guarantees monotonicity over temperature. The device features SoftSpan technology, allowing six programmable output ranges (two unipolar, four bipolar) via the parallel interface or pin strapping. Key electrical specifications include ±1 LSB maximum INL and DNL, a settling time of 2µs to ±1 LSB, and a low supply current of 1µA maximum. It utilizes a bidirectional parallel interface for register readback and includes an asynchronous clear pin.

Feature Summary

• 16-bit resolution with ±1 LSB INL and DNL guaranteed over temperature
• Six programmable output ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, ±10V, and -2.5V to 7.5V
• Bidirectional parallel interface with readback capability for all internal registers
• Low power consumption with 1µA maximum supply current and 2µs settling time

Applications

• High-resolution offset and gain adjustment circuits
• Process control and industrial automation systems
• Automatic test equipment requiring precise voltage/current generation
• Data acquisition systems needing accurate digital-to-analog conversion

Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging, distinct from the tube-packaged #PBF variant. Confirm the 'I' grade designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure the specific lot date code meets project requirements as manufacturing dates vary by batch.

Selection Notes

Select this component when 16-bit accuracy with software-selectable output spans is required in a compact QFN package. The parallel interface suits applications with sufficient I/O lines for direct microprocessor connection. Consider the external reference amplifier requirements for the multiplying DAC architecture and ensure the load impedance matches the specified feedback resistor constraints for optimal settling performance.

Part Context

This part belongs to the LTC2751 family of SoftSpan DACs, which also includes 12-bit and 14-bit variants. The BIUHF-16 designation specifies the Industrial temperature grade, 16-bit resolution, and the UHF 38-lead QFN package. The TRPBF suffix denotes the tape and reel packaging format for automated assembly.

Replacement Considerations

Direct replacements within the same package and specification include other LTC2751BIUHF-16 variants with different packaging such as LTC2751BIUHF-16#PBF. Cross-model substitution requires verifying interface compatibility and pinout alignment with similar Analog Devices current-output DACs.