LTC2636HMS-LMX8#TRPBF

Overview

The LTC2636HMS-LMX8#TRPBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 10ppm/°C internal reference and operates with a supply voltage of 4.5V to 5.5V. The device provides rail-to-rail output buffers and is guaranteed monotonic over the –40°C to 125°C temperature range. It communicates via a 3-wire SPI/MICROWIRE-compatible interface with clock rates up to 50MHz. This specific variant includes power-on reset logic that sets outputs to mid-scale in external reference mode upon startup.

Feature Summary

• Octal 8-Bit Resolution: Eight independent DAC channels with 8-bit resolution.
• High Accuracy Reference: Integrated 10ppm/°C reference with 4.096V full-scale output.
• Rail-to-Rail Output: Rail-to-rail output buffers ensure maximum dynamic range.
• Guaranteed Monotonicity: Guaranteed monotonic operation over the full operating temperature range.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment

Procurement Notes

Verify the H-grade automotive temperature rating (-40°C to 125°C) and LMX suffix for mid-scale reset in external reference mode. Confirm the MSOP-16 package and tape-and-reel packaging specifications before procurement.

Selection Notes

Select this part for applications requiring eight channels with high accuracy and wide temperature tolerance. Ensure the supply voltage is within the 4.5V to 5.5V range required for the H-grade version. Consider the LMX suffix if mid-scale reset in external reference mode is needed.

Part Context

This component belongs to the LTC2636 family of octal DACs. Variants differ by resolution (12-, 10-, or 8-bit), temperature grade (C, I, or H), and power-on reset behavior (Z, MI, or MX). The H-grade denotes automotive temperature range, while the MS suffix indicates the 16-lead MSOP package.

Replacement Considerations

Compatible substitutes include other LTC2636 variants with matching resolution and package. Verify temperature range and reset behavior when selecting alternatives.

FAQ

What is the full-scale output voltage for the LTC2636H?

The LTC2636-H has a full-scale output of 4.096V when using the internal reference.

How does the LMX suffix affect power-on behavior?

The LMX suffix indicates that the DAC outputs reset to mid-scale in external reference mode after power-up.

What is the maximum serial clock frequency?

The serial interface supports clock rates up to 50MHz.