LTC2641CDD-12#TRPBF

Overview

The LTC2641CDD-12#TRPBF is a 12-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 current consumption 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 0.5 LSB, and a glitch impulse of 0.5 nV·sec. It is housed in an 8-lead 3mm × 3mm DFN package and is guaranteed monotonic over the commercial temperature range of 0°C to 70°C.

Feature Summary

• 12-bit resolution with ±0.5 LSB INL/DNL accuracy
• Low power consumption of 120µA at 2.7V to 5.5V
• Fast 1µs settling time to 0.5 LSB
• Unbuffered voltage output driving loads >60kΩ

Applications

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

Procurement Notes

Verify the #TRPBF suffix indicates tape and reel packaging for automated assembly. Confirm the C grade corresponds to the 0°C to 70°C commercial operating temperature range. Ensure the DFN package footprint matches the PCB layout requirements.

Selection Notes

Select this component for applications requiring low power and moderate precision. The unbuffered output requires external buffering if driving low impedance loads below 60kΩ. For bipolar operation, the LTC2642 variant with matched scaling resistors is required instead of the LTC2641.

Part Context

This part belongs to the LTC2641/LTC2642 family of 16-, 14-, and 12-bit DACs. The 'C' denotes the commercial temperature grade, while 'IDD' would indicate the industrial grade (-40°C to 85°C). The '12' specifies the 12-bit resolution version within the series.

Replacement Considerations

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