LTC2753AIUK-16

Overview

The LTC2753AIUK-16#PBF is a dual-channel, 16-bit current-output digital-to-analog converter (DAC) from Analog Devices Inc. It features SoftSpan technology, allowing for flexible output voltage ranges including 0 to 5V, 0 to 10V, ±5V, ±10V, ±2.5V, and -2.5V to +7.5V. The device operates on a single supply voltage between 2.7V and 5.5V for both analog and digital domains. Key performance metrics include a settling time of 2µs, integral nonlinearity (INL) of ±0.4 LSB, and differential nonlinearity (DNL) of ±0.2 LSB. It utilizes a parallel interface and is housed in a 48-lead QFN package.

Feature Summary

• Dual-channel 16-bit resolution with SoftSpan Iout architecture
• Six selectable output voltage ranges via external resistor configuration
• High accuracy: ±0.4 LSB INL and ±0.2 LSB DNL
• Fast settling time of 2µs with monotonic operation over temperature

Applications

• Industrial process control systems requiring precise current/voltage outputs
• Portable instrumentation and battery-powered devices due to low power consumption
• Data acquisition systems needing high-resolution analog signal generation
• Medical equipment requiring accurate and stable analog signal sources

Procurement Notes

Verify the specific suffix (#PBF) indicates lead-free compliance when ordering. Confirm the package type is 48-QFN (7x7 mm). Ensure the selected grade (AIUK) matches the required temperature range (-40°C to +85°C) and performance specifications. Cross-reference with official Analog Devices documentation for pin compatibility and recommended operating conditions.

Selection Notes

Select this component for applications requiring dual-channel 16-bit precision with flexible output swing capabilities. Compare against the LTC2754 series if serial SPI interface is preferred over parallel. Consider the LTC2753-12 or -14 variants if lower resolution suffices for cost reduction. Verify that the external reference voltage requirements align with the system design, as the device uses an external reference.

Part Context

The LTC2753 is part of Analog Devices' SoftSpan DAC family, designed for versatility in output ranges without changing hardware. It serves as a direct replacement for older dual-channel DACs in industrial and medical applications where size and power efficiency are critical. The AIUK grade represents the highest performance tier within the standard temperature range.

Replacement Considerations

Direct functional substitutes include other parts from the LTC2753 family with different resolutions (e.g., LTC2753IUK-14#PBF) or grades. For serial interface alternatives, consider the LTC2754 series. Ensure pin-out compatibility and software register mapping are verified before substitution.