LTC2753BIUK-16#PBF

Overview

The LTC2753BIUK-16#PBF is a dual 16-bit multiplying current-output DAC from Analog Devices, housed in a 48-lead 7mm × 7mm plastic QFN package. It operates on a single 2.7V to 5.5V supply with a maximum supply current of 1μA. The device 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). Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB and differential nonlinearity (DNL) of ±1 LSB over the industrial temperature range of –40°C to 85°C. It includes a bidirectional parallel interface for register readback, power-on reset to 0V, and an asynchronous clear pin.

Feature Summary

• Dual 16-bit resolution with guaranteed monotonicity over temperature
• Six programmable output ranges via software or hardware pin strapping
• Bidirectional parallel I/O interface supporting full register readback
• Low power consumption with 1μA maximum supply current

Applications

• Process control and industrial automation systems
• Automatic test equipment
• Data acquisition systems

Procurement Notes

Verify that the component matches the specific industrial temperature grade (-40°C to 85°C) indicated by the 'I' suffix in the part number. Confirm the package type is the 48-lead 7mm × 7mm QFN. Ensure the ordering suffix '#PBF' corresponds to lead-free finish requirements for the target assembly process.

Selection Notes

Select this model when high DC accuracy is required across wide temperature variations, as it guarantees ±1 LSB INL/DNL without adjustment. Choose the BIUK variant over the CUK version if operation below 0°C is necessary. Consider the manual span configuration option via the MSPAN pin if fixed output ranges simplify the system design compared to software-controlled spans.

Part Context

This part belongs to the LTC2753 family of SoftSpan DACs, which also includes 12-bit and 14-bit variants (LTC2753-12, LTC2753-14) and different performance grades (C, I, B, A). The 'B' designation indicates a specific performance bin within the 16-bit class, while 'I' denotes the industrial temperature range. It shares the same physical footprint and interface as other members of the series.

Replacement Considerations

Direct replacements within the same package and pinout include the LTC2753AIUK-16#PBF (higher performance grade) or LTC2753BCUK-16#PBF (commercial temperature range). Verify that any substitute maintains the required -40°C to 85°C operating range and 16-bit linearity specifications.