LTC2634CUD-LMX8#TRPBF

Overview

The LTC2634CUD-LMX8#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 utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key specifications include rail-to-rail output buffers, guaranteed monotonicity over the operating temperature range, and ultralow crosstalk between DACs. The part is housed in a 16-lead 3mm x 3mm QFN package.

Feature Summary

• Quad 8-bit resolution with integrated 2.5V full-scale precision reference
• Rail-to-rail output buffers with guaranteed monotonicity
• 3-wire SPI/MICROWIRE compatible serial interface supporting up to 50MHz clock
• Power-on reset configured to mid-scale in external reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to the tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm that the C-grade temperature rating aligns with the intended operational environment requirements before procurement.

Selection Notes

Select this component when a quad-channel DAC with low power consumption and high accuracy is required. The L suffix indicates a 2.5V internal reference suitable for 2.7V to 5.5V supplies. The MX suffix specifies a mid-scale power-on reset behavior in external reference mode, which may be necessary for specific system initialization sequences.

Part Context

This part belongs to the LTC2634 family, which includes 12-, 10-, and 8-bit variants. The CUD package designation identifies the 16-lead QFN form factor. The LMX8 variant specifically combines the 8-bit resolution, 2.5V reference, and mid-scale external reference reset configuration within this package type.

Replacement Considerations

Direct replacements within the same family include LTC2634CUD-LMI8#TRPBF or LTC2634CUD-LZ8#TRPBF, depending on the required power-on reset behavior. Ensure the replacement matches the package type and electrical specifications such as supply voltage range and reference configuration.