LTC2641IMS8-16#TRPBF

Overview

The Analog Devices LTC2641IMS8-16#TRPBF is a 16-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 current consumption of 120µA. The device guarantees monotonic operation over temperature and features a maximum integral nonlinearity (INL) error of ±1LSB. It utilizes a 3-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. Key specifications include a 1µs settling time, a glitch impulse of 0.5nV·sec, and Schmitt-trigger inputs for direct optocoupler interfacing.

Feature Summary

• 16-bit resolution with ±1LSB INL and ±1LSB DNL guaranteed over temperature
• Unbuffered voltage output with low offset error of ±1LSB and 120µA supply current
• Fast 1µs settling time and 0.5nV·sec glitch impulse
• 50MHz SPI/QSPI/MICROWIRE compatible serial interface with Schmitt-trigger inputs

Applications

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

Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm the IMS8 designation corresponds to the 8-lead MSOP package variant. Ensure the specific temperature grade matches the design requirements, as the 'I' suffix denotes the industrial range (-40°C to +85°C). Cross-reference the manufacturer part number with official distributor catalogs to confirm availability and lead times.

Selection Notes

Select the LTC2641IMS8-16#TRPBF for applications requiring high DC accuracy and low power consumption in a compact surface-mount package. This model is suitable for designs needing unbuffered outputs that can drive loads greater than 60kΩ without degrading linearity. Consider the bipolar LTC2642 variant if external op-amp configuration for negative voltage swings is required. Verify that the system interface supports the 3-wire serial protocol and that the reference voltage input range aligns with the available supply rails.

Part Context

This component belongs to the LTC2641/LTC2642 family of 16-/14-/12-bit VOUT DACs. The LTC2641 series provides unipolar output capabilities, whereas the LTC2642 includes internal scaling resistors for bipolar operation with an external amplifier. Both families share similar electrical characteristics, including low power consumption and high precision, but differ in pin count and package options to accommodate different application needs.

Replacement Considerations

Direct replacements within the same family include other resolution variants such as the LTC2641IMS8-14#TRPBF or LTC2641IMS8-12#TRPBF, which maintain pin compatibility but offer lower resolution. For bipolar applications, the LTC2642IMS-16#TRPBF serves as a functional alternative with additional pins for external amplifier connection.