LTC2634IMSE-HMI8#PBF

Overview

The LTC2634IMSE-HMI8#PBF 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 temperature range, and low noise characteristics. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. This specific variant utilizes a 10-lead MSOP package and incorporates a power-on reset circuit configured to set outputs to mid-scale in internal reference mode.

Feature Summary

• Quad 8-bit DACs with integrated 2.5V full-scale precision reference
• Rail-to-rail output buffers with guaranteed monotonicity
• 3-wire SPI/MICROWIRE serial interface operating at up to 50MHz
• 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 component matches the specified 10-lead MSOP package and HMI8 suffix configuration. Confirm that the internal reference mode and mid-scale power-on reset behavior align with system initialization requirements. Ensure the operating voltage range of 2.7V to 5.5V is compatible with the target application's power supply constraints.

Selection Notes

Select this part for applications requiring four independent 8-bit voltage outputs with high accuracy and low drift. The integrated 2.5V reference simplifies design by eliminating external components. Consider the 10-lead MSOP package for space-constrained designs where QFN availability is limited. Verify that the 50MHz serial interface speed meets the system's data throughput needs.

Part Context

This component belongs to the LTC2634 family, which offers various resolutions (12-, 10-, and 8-bit) and package options (QFN and MSOP). The IMSE designation indicates an industrial temperature grade (-40°C to 85°C) and the MSE package type. The HMI8 suffix specifies the 2.5V full-scale internal reference and mid-scale power-on reset behavior.

Replacement Considerations

Direct replacements within the same family include other LTC2634 variants with different resolutions or package types, such as LTC2634IMSE-LMI8#PBF or LTC2634CUD-HMI8#PBF, provided the pinout and electrical specifications remain compatible.