LTC2641IDD-16#PBF

Overview

The LTC2641IDD-16#PBF is a 16-bit unbuffered voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on a single 2.7V to 5.5V supply with a typical supply current of 120µA. The device features a 3-wire SPI/Microwire compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB and differential nonlinearity (DNL) of ±1 LSB over the operating temperature range. The DAC settles to within 0.5 LSB of full scale in 1 µs. It is housed in an 8-lead 3mm × 3mm DFN package and includes a power-on reset circuit that clears the output to zero scale upon initial power application.

Feature Summary

• 16-bit resolution with guaranteed monotonic operation over temperature
• Unbuffered voltage output with low offset error of ±1 LSB
• Fast 1 µs settling time to 16 bits and 0.5 nV•sec glitch impulse
• Power-on reset clears DAC output to zero scale

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the package type, temperature grade, and lead finish. Ensure compatibility with system requirements for the 3mm x 3mm DFN footprint and thermal management. Confirm that the serial interface timing parameters align with the host controller's capabilities.

Selection Notes

Select this component for applications requiring high precision unipolar voltage generation with minimal power consumption. The unbuffered output architecture necessitates careful consideration of load impedance; loads greater than 60kΩ are recommended to maintain linearity specifications. Verify that the external reference voltage falls within the 2V to VDD range for proper operation.

Part Context

This part belongs to the LTC2641 family of 16-, 14-, and 12-bit voltage output DACs. The 'I' designation indicates an industrial temperature range of –40°C to 85°C. The 'IDD' suffix specifies the 8-lead 3mm × 3mm plastic DFN package. The '#PBF' suffix denotes a lead-free finish compliant with RoHS standards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.