LTC2634CMSE-HMX8#PBF

Overview

The LTC2634CMSE-HMX8#PBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in a 10-lead MSOP package. 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 and guarantees monotonicity over the commercial temperature range of 0°C to 70°C. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Power-on reset defaults to mid-scale in external reference mode.

Feature Summary

• Quad 8-bit DACs with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with guaranteed monotonicity
• SPI/MICROWIRE compatible 3-wire serial interface up to 50MHz
• Power-on reset to mid-scale in external reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix HMX8 corresponds to the 8-bit resolution, mid-scale power-on reset in external reference mode, and MSOP package configuration. Confirm the C-grade designation aligns with the required 0°C to 70°C operating temperature range for the application environment.

Selection Notes

Select this component when a quad-channel, low-pin-count solution is required for 8-bit applications. The MSOP package offers a compact footprint compared to the QFN option. Ensure the system design accommodates the 2.7V minimum supply voltage and that the 2.5V full-scale output meets the downstream circuit requirements.

Part Context

This part belongs to the LTC2634 family, which also includes 10-bit and 12-bit variants. The family shares identical pinouts and functional blocks, differing primarily in resolution, accuracy specifications, and available package options. The CMSE variant specifically denotes the commercial grade and MSOP packaging within this broader product line.

Replacement Considerations

Direct replacements within the same family include LTC2634CMSE-LMX8#PBF (zero-scale reset) or LTC2634IMSE-HMX8#PBF (industrial temperature range). Cross-family alternatives like the LTC2635 offer I2C interfaces but require interface adaptation.