LTC2636IMS-HMX8#TRPBF

Overview

The LTC2636IMS-HMX8#TRPBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a high-accuracy internal reference with a temperature coefficient of 10ppm/°C and a full-scale output of 4.096V. The device operates on a single 4.5V to 5.5V supply and includes rail-to-rail output buffers guaranteed monotonic over the –40°C to 125°C automotive temperature range. Communication is handled via a 3-wire SPI/MICROWIRE-compatible interface with clock rates up to 50MHz. This specific variant resets to mid-scale in external reference mode upon power-up and is housed in a 16-lead MSOP package.

Feature Summary

• Octal 8-Bit Resolution: Provides eight independent DAC channels with 8-bit resolution.
• Automotive Temperature Range: Guaranteed monotonic operation from –40°C to 125°C.
• Internal Reference: Integrated 10ppm/°C reference yielding a 4.096V full-scale output.
• Power-On Reset: Configured to reset outputs to mid-scale in external reference mode.

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment

Procurement Notes

Verify the component matches the specified 16-lead MSOP package and H-grade automotive temperature rating. Confirm the ordering suffix indicates tape and reel packaging and lead-free construction as per manufacturer standards. Ensure the design accounts for the 4.5V minimum supply voltage requirement inherent to the H-series part number.

Selection Notes

Select this part when eight DAC channels are required within an automotive or industrial environment demanding wide temperature stability. The H-grade designation ensures performance at temperatures up to 125°C, unlike C or I grades limited to 70°C and 85°C respectively. Choose the MX suffix if mid-scale initialization in external reference mode is necessary for system startup safety.

Part Context

This component belongs to the LTC2636 family of octal DACs available in 12-, 10-, and 8-bit resolutions. The IMS-HMX8 variant specifically denotes the Industrial/Automotive grade (H), MSOP package, and mid-scale external reference reset configuration. Other variants include L-series parts with 2.5V references and different temperature grades such as C and I.

Replacement Considerations

Direct replacements within the same family include LTC2636IMS-LMX8#TRPBF (2.5V reference) or LTC2636IMS-HMI8#TRPBF (mid-scale internal reference reset). Verify that the alternative part's supply voltage range and reset behavior align with the existing circuit design constraints.