LTC2751CUHF-14#TRPBF

Overview

The LTC2751CUHF-14#TRPBF is a 14-bit, multiplying, current-output digital-to-analog converter (DAC) from Analog Devices. It operates on a single 2.7V to 5.5V supply and features a parallel interface with bidirectional data I/O for register readback. The device guarantees monotonicity over temperature and offers six programmable output ranges via SoftSpan technology. Key electrical characteristics include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 2µs to ±1 LSB, and a low supply current of 1µA maximum. It is housed in a 38-lead 5mm × 7mm QFN package.

Feature Summary

• 14-bit resolution with guaranteed monotonicity over the full operating temperature range
• Six programmable output ranges: two unipolar (0V to 5V, 0V to 10V) and four bipolar (±2.5V, ±5V, ±10V, –2.5V to 7.5V)
• Bidirectional parallel interface allowing readback of all on-chip registers
• Low power consumption with a maximum supply current of 1µA

Applications

• High-resolution offset and gain adjustment circuits
• Process control and industrial automation systems
• Automatic test equipment (ATE)
• Data acquisition systems requiring precise current or voltage outputs

Procurement Notes

Verify that the #TRPBF suffix indicates tape and reel packaging, which differs from the tube packaging of the #PBF variant. Confirm the 'C' grade designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the specific lot markings match the datasheet requirements for lead-free finish identification.

Selection Notes

Select this model when a 14-bit resolution is sufficient, offering a balance between performance and pin count compared to the 16-bit version. The CUHF package provides a compact footprint suitable for space-constrained designs. Consider the parallel interface requirement; if serial communication is preferred, alternative models such as the LTC2754 series should be evaluated instead.

Part Context

This component belongs to the LTC2751 family of SoftSpan DACs, which includes 12-bit, 14-bit, and 16-bit variants. The LTC2751CUHF-14#TRPBF specifically denotes the 14-bit resolution, commercial temperature grade, and tape-and-reel packaging format within this product line.

Replacement Considerations

For direct functional replacement with identical specifications, consider the LTC2751IUHF-14#TRPBF, which shares the same pinout and electrical characteristics but supports an extended industrial temperature range of -40°C to 85°C.