LTC2641IMS8-12#PBF

Overview

The Analog Devices LTC2641IMS8-12#PBF is a 12-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) and differential nonlinearity (DNL) of ±0.5 LSB, a settling time of 1µs to 0.5LSB, and a glitch impulse of 0.5nV•sec. It includes a power-on reset circuit that clears the DAC output to zero scale.

Feature Summary

• 12-bit resolution with guaranteed monotonicity over temperature
• Low power consumption: 120µA typical supply current
• Fast settling time of 1µs to 0.5LSB
• Unbuffered voltage output with low offset error of ±1LSB

Applications

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

Procurement Notes

Verify the specific suffix IMS8 corresponds to the 8-lead MSOP package and I-grade (-40°C to 85°C) temperature range. Confirm the #PBF designation indicates lead-free finish and RoHS compliance. Ensure the ordering code matches the required 12-bit resolution variant within the LTC2641 family.

Selection Notes

Select this component for applications requiring low power and moderate precision. The unbuffered output requires load resistance greater than 60kΩ to maintain linearity specifications. For bipolar operation, the LTC2642 series is required instead. Verify that the external reference voltage falls between 2V and VDD.

Part Context

This part belongs to the LTC2641/LTC2642 family of 16-, 14-, and 12-bit voltage output DACs. The IMS8 suffix denotes the 8-lead MSOP package option, distinct from the 3mm x 3mm DFN package. The 'I' grade specifies an industrial operating temperature range of -40°C to +85°C.

Replacement Considerations

LTC2641CMS8-12#PBF is the commercial grade equivalent with a 0°C to 70°C operating range.