LTC2634IUD-LMI8#TRPBF

Overview

The LTC2634IUD-LMI8#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 maximum integral nonlinearity error of ±0.5 LSB. Communication is handled via a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Quad 8-bit DACs with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with ±0.5 LSB maximum INL
• SPI/MICROWIRE compatible 3-wire serial interface
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2,500 pieces. Confirm the I-grade designation matches the required -40°C to 85°C operating temperature range for the target application environment.

Selection Notes

Select this part for applications requiring four independent 8-bit outputs with low power consumption and high accuracy. Ensure the system supply voltage remains within the 2.7V to 5.5V range. Consider the QFN package size if board space is limited, noting the exposed pad must be soldered to PCB ground.

Part Context

This component belongs to the LTC2634 family, which offers 12-, 10-, and 8-bit resolutions. The 'I' suffix denotes the industrial temperature grade, while 'UD' specifies the 16-lead QFN package. The 'LMI' configuration sets the full-scale voltage to 2.5V with a mid-scale power-on reset behavior.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pin compatibility and electrical specifications against alternative quad DACs if sourcing constraints require substitution.