LTC2634CMSE-HMI8#PBF

Overview

The LTC2634CMSE-HMI8#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. Upon power-up, the outputs reset to mid-scale.

Feature Summary

• Quad 8-bit resolution with integrated 2.5V precision reference
• Rail-to-rail output buffers guaranteed monotonic from -40°C to 125°C
• 3-wire SPI/MICROWIRE serial interface with 50MHz clock rate
• 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 against the manufacturer's current documentation to confirm package type and temperature grade. Ensure the component meets RoHS compliance requirements for the intended market. Cross-reference the part number with official distributor catalogs to confirm availability and lead times prior to procurement.

Selection Notes

Select this model for applications requiring four independent 8-bit DAC channels with low power consumption. The HMI suffix indicates a mid-scale power-on reset behavior suitable for systems where zero-scale initialization is not required. Verify that the 2.5V full-scale range aligns with downstream circuit input 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 designation identifies the commercial temperature grade and MSOP packaging. Other variants include higher resolution options and automotive-grade parts with different reset behaviors.

Replacement Considerations

Direct replacements within the same family include LTC2634CMSE-LMI8#PBF or LTC2634CMSE-HMI8#PBF depending on the desired power-on reset state. For higher resolution needs, consider the LTC2634IMSE-HMI10#PBF or LTC2634IMSE-HMX12#PBF, ensuring pin compatibility and supply voltage constraints are met.