LTC2634IUD-HMI8#TRPBF

Overview

The LTC2634IUD-HMI8#TRPBF is a quad 8-bit voltage output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 2.5V and operates on a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 85°C industrial temperature range, and a power-on reset to mid-scale in internal reference mode. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. It is housed in a 16-lead 3mm × 3mm QFN package.

Feature Summary

• Quad 8-bit resolution with integrated 2.5V full-scale precision reference
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV•s)
• SPI/MICROWIRE compatible 3-wire serial interface operating up to 50MHz
• Power-on reset to mid-scale in internal reference mode

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel packaging format containing 2,500 pieces. Confirm the I-grade designation corresponds to the specified industrial temperature range of –40°C to 85°C. Ensure the HMI suffix matches the required mid-scale power-on reset behavior for internal reference applications.

Selection Notes

Select this part when four independent 8-bit DAC channels are required with low power consumption and high accuracy. The 2.5V full-scale range suits single-supply systems operating between 2.7V and 5.5V. Consider the QFN package for compact designs requiring exposed pad soldering for thermal management and ground connection.

Part Context

This component belongs to the LTC2634 family, which offers 12-, 10-, and 8-bit resolutions in both QFN and MSOP packages. The IUD variant specifically denotes the Industrial temperature grade and 16-lead QFN package. Other variants include the C-grade for commercial use and H-grade for automotive applications up to 125°C.

Replacement Considerations

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