LTC2641IMS8-14#TRPBF

Overview

The Analog Devices LTC2641IMS8-14#TRPBF is a 14-bit unbuffered voltage output digital-to-analog converter (DAC) housed in an 8-lead MSOP package. It operates from a single 2.7V to 5.5V supply with a typical quiescent current of 120µA. The device features a 3-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include ±0.5 LSB integral nonlinearity (INL), ±0.5 LSB differential nonlinearity (DNL), and a settling time of 1µs to 16-bit accuracy. The output swings from 0V to VREF, determined by an external reference input ranging from 2V to VDD.

Feature Summary

• 14-bit resolution with guaranteed monotonicity over temperature
• Low power consumption: 120µA typical supply current
• Fast 1µs settling time to 16-bit accuracy
• Unbuffered voltage output directly drives loads >60kΩ

Applications

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

Procurement Notes

Verify the ordering suffix #TRPBF confirms tape and reel packaging for automated assembly. Confirm the IMS8 designation matches the required 8-lead MSOP footprint. Ensure the -14 suffix aligns with the specific 14-bit resolution requirement rather than 12-bit or 16-bit variants within the same package.

Selection Notes

Select this component when low offset error and minimal power dissipation are critical, as the unbuffered architecture achieves these metrics. Verify that the application load impedance exceeds 60kΩ to maintain specified linearity without degrading INL or DNL. Consider the LTC2642 if bipolar output capability is required instead of unipolar operation.

Part Context

This part belongs to the LTC2641/LTC2642 family of high-resolution DACs. The LTC2641 variant provides unipolar output, while the LTC2642 includes internal scaling resistors for bipolar configurations. The IMS8 package offers a compact surface-mount solution suitable for space-constrained designs requiring precise analog signal generation.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.