LTC2753CUK-14#PBF

Overview

The LTC2753CUK-14#PBF is a dual 14-bit multiplying digital-to-analog converter (DAC) with parallel input and current output. It operates from a single 2.7V to 5.5V supply and features SoftSpan technology, allowing 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 includes a bidirectional parallel interface for register readback. Key electrical specifications include a settling time of 2µs to ±1 LSB, a maximum supply current of 1µA, and an asynchronous clear pin that resets outputs to 0V.

Feature Summary

• Dual 14-bit resolution with guaranteed monotonicity over the full operating temperature range
• SoftSpan architecture providing six software-programmable or pin-strapped output ranges
• Bidirectional parallel I/O interface enabling readback of all internal registers
• Ultra-low power consumption with a maximum supply current of 1µA

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring precise voltage generation
• Data acquisition systems utilizing high-resolution signal conditioning

Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free packaging compliant with RoHS standards. Confirm the 'C' grade designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the UK package variant matches the required 48-lead QFN footprint on the target PCB layout.

Selection Notes

Select this model when 14-bit resolution is sufficient for the application's linearity requirements. The C-grade version is appropriate for commercial environments; use the I-grade variant if operation below 0°C is required. Verify that the external reference voltage aligns with the desired SoftSpan output scaling, as ranges are linearly dependent on VREF.

Part Context

This component belongs to the LTC2753 family, which also includes 12-bit and 16-bit variants. The 14-bit version offers a balance between resolution and cost within the SoftSpan series. All family members share identical pinouts and operational principles, differing primarily in resolution and specific accuracy grades.

Replacement Considerations

Direct functional replacements within the same package and specification profile include the LTC2753CUK-12#PBF for lower resolution needs or the LTC2753BCUK-16#PBF for higher precision. Ensure the replacement part maintains the same temperature grade and package type.