LTC2641ACMS8-16#PBF

Overview

The Analog Devices LTC2641ACMS8-16#PBF 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 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) error of ±1LSB and differential nonlinearity (DNL) of ±1LSB over temperature. The DAC provides a glitch impulse of 0.5nV·sec, a settling time of 1µs to 16 bits, and a signal-to-noise ratio of 92dB.

Feature Summary

• 16-bit resolution with guaranteed monotonic operation and ±1LSB INL/DNL errors
• Low power consumption of 120µA typical supply current
• Fast 1µs settling time to 16-bit accuracy
• Unbuffered voltage output capable of driving loads greater than 60kΩ

Applications

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

Procurement Notes

Verify the specific ordering suffix 'ACMS8-16' corresponds to the commercial temperature range (0°C to 70°C), 16-bit resolution, and MSOP-8 package configuration. Confirm RoHS compliance status and lead-free finish requirements against the manufacturer's current documentation before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high precision unbuffered outputs without the need for external buffering amplifiers. Ensure the load impedance exceeds 60kΩ to maintain specified linearity performance. Verify that the system interface supports the required 3-wire SPI or Microwire protocol with clock speeds up to 50MHz.

Part Context

This part belongs to the LTC2641 family of 16-, 14-, and 12-bit voltage output DACs. The 'A' grade indicates enhanced performance specifications compared to standard grades. The MSOP-8 package offers a compact footprint suitable for space-constrained designs, while the exposed pad must be soldered to PCB ground for thermal management.

Replacement Considerations

Direct replacements within the same family include LTC2641CMS8-16#PBF (standard grade) or LTC2641AIMS8-16#PBF (industrial temperature range). Note that these variants share identical pinouts and functionality but differ in operating temperature ranges and specific performance tolerances.