LTC2753AIUK-16#PBF

Overview

The LTC2753AIUK-16#PBF is a dual 16-bit multiplying current-output DAC from Analog Devices, housed in a 48-lead 7mm × 7mm 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, enabling 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) and differential nonlinearity (DNL) of ±1 LSB over temperature, a settling time of 2μs to ±1 LSB, and a glitch impulse of 1nV•s. 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 software-programmable or pin-strapped output ranges via SoftSpan architecture
• 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 the specific suffix #PBF indicates lead-free finish and tube packaging when sourcing. Confirm the AIUK designation corresponds to the industrial temperature range (-40°C to 85°C). Ensure compatibility with the 48-lead QFN footprint during procurement planning.

Selection Notes

Select this component for applications requiring high-resolution current output with flexible voltage range programming. The -16 variant provides ±1 LSB INL/DNL without adjustment. Consider the parallel interface requirements and the need for external operational amplifiers to convert current outputs to voltage signals within the specified load capacitance limits.

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). The AIUK-16 specifically denotes the industrial grade version with enhanced linearity performance compared to the B-grade counterpart. It shares the same physical package and pinout as other resolutions in the series.

Replacement Considerations

Direct substitutes within the same family include LTC2753BCUK-16#PBF (commercial grade) and LTC2753BIUK-16#PBF (industrial grade). Note that these alternatives may have different INL/DNL specifications (e.g., ±2 LSB or ±4 LSB) compared to the ±1 LSB guarantee of the A-grade part.