LTC2634CMSE-LZ8#TRPBF

Overview

The LTC2634CMSE-LZ8#TRPBF is a quad 8-bit voltage output digital-to-analog converter (DAC) in a 10-lead MSOP package. It features an integrated precision reference with a full-scale output of 2.5V and operates from a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 125°C range, and a power-on reset to zero-scale. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz.

Feature Summary

• Quad 8-bit DACs with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with 2.5V full-scale range
• Power-on reset to zero-scale for consistent initialization
• SPI/MICROWIRE compatible 3-wire serial interface

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2,500 units. Confirm the MSE package designation corresponds to the 10-lead MSOP form factor. Ensure the LZ8 code matches the required 8-bit resolution and zero-scale power-on reset configuration for the target application design.

Selection Notes

Select this part when four independent 8-bit channels are required within a compact 10-lead MSOP footprint. The internal 2.5V reference eliminates external component needs for standard voltage ranges. Verify that the 2.7V minimum supply voltage aligns with the system power rails and that the zero-scale power-up state meets safety requirements.

Part Context

This component belongs to the LTC2634 family, which offers 12-, 10-, and 8-bit resolutions in both QFN and MSOP packages. The CMSE variant specifically denotes the commercial temperature grade (0°C to 70°C), 8-bit resolution, and MSOP package type. Other variants in the family include higher accuracy options and automotive grades.

Replacement Considerations

Direct replacements within the same package and pinout include other LTC2634 models such as LTC2634IMSE-LZ8#PBF or LTC2634CUD-LZ8#PBF, noting differences in temperature grade and package style. Cross-family alternatives like the LTC2631 require interface and pinout verification.