LTC2634HMSE-HZ8#PBF

Overview

The LTC2634HMSE-HZ8#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 4.096V and operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 125°C automotive temperature range, and a power-on reset function that clears outputs to zero-scale. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. It is housed in a compact 10-lead MSOP package.

Feature Summary

• Quad 8-bit DACs with integrated 4.096V precision reference
• Automotive grade (-40°C to 125°C) with AEC-Q100 qualification
• Rail-to-rail output buffers and guaranteed monotonicity
• Power-on reset to zero-scale for consistent initialization

Applications

• Automotive systems requiring high reliability
• Process control and industrial automation
• Portable equipment with strict power constraints

Procurement Notes

Verify the specific ordering suffix #PBF confirms lead-free compliance and RoHS standards. Confirm the MSE package designation matches the required 10-lead surface mount footprint. Ensure the H-grade temperature rating aligns with the operational environment requirements for automotive or extended industrial applications.

Selection Notes

Select this part when a quad-channel configuration with 8-bit resolution is sufficient for the application. The HMSE variant provides the necessary automotive temperature range and zero-scale power-on reset behavior. Consider the 4.5V minimum supply requirement if operating near the lower voltage limits of the system.

Part Context

This component belongs to the LTC2634 family, which offers various resolutions (8, 10, 12-bit) and package options (QFN, MSOP). The HMSE-HZ8 designation specifically identifies the 8-bit resolution, MSOP package, automotive temperature grade, and zero-scale reset feature within this broader product line.

Replacement Considerations

Direct replacements must match the 8-bit resolution, quad channel count, and 10-lead MSOP package. Verify that any substitute supports the 4.096V full-scale output and automotive temperature range if those are critical constraints.