LTC2752ACLX

Overview

The LTC2752ACLX is a dual 16-bit multiplying digital-to-analog converter with serial 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 selectable output ranges (up to ±10V) via SPI or pin-strapping. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB and differential nonlinearity (DNL) of ±1 LSB over the operating temperature range. Supply current is typically 1μA, and settling time is 2μs for a 10V step.

Feature Summary

• Dual 16-bit current-output DACs with ±1 LSB INL/DNL guaranteed over temperature
• SoftSpan technology enables six software-selectable or pin-strapped output ranges
• Serial readback of all on-chip registers via 3-wire SPI interface
• Voltage-controlled offset and gain adjustments for high-resolution trimming

Applications

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

Procurement Notes

Verify the ordering suffix #PBF indicates lead-free finish and tray packaging. Confirm the 'A' grade designation corresponds to the specified ±1 LSB INL performance limits. Ensure the package type matches the 48-lead 7mm × 7mm LQFP footprint required by the design.

Selection Notes

Select this component when dual-channel 16-bit precision is required with flexible output range configuration. The SoftSpan feature simplifies system design by eliminating external resistor networks for range switching. Verify that the external reference voltage aligns with the desired output span multiples.

Part Context

The LTC2752 belongs to Analog Devices' SoftSpan DAC family, which integrates programmable output ranges directly into the converter architecture. This model specifically offers dual channels in a compact LQFP package, distinguishing it from quad or single-channel variants within the same series.

Replacement Considerations

Direct functional substitutes include other dual 16-bit SoftSpan DACs from the manufacturer, such as the LTC2758 (18-bit) or LTC2754 (quad channel). Verify pin compatibility and register mapping before substitution.