LTC2636IDE-HMX8#TRPBF

Overview

The LTC2636IDE-HMX8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated high-accuracy reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V. The device operates on a single 4.5V to 5.5V supply and utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes double-buffered data latches and power-on reset logic that sets outputs to mid-scale in external reference mode upon startup. The component is housed in a 14-lead DFN package and supports industrial operating temperatures from –40°C to 85°C.

Feature Summary

• Octal 8-Bit Architecture: Contains eight independent DAC channels with rail-to-rail output buffers guaranteed monotonic over the operating temperature range.
• Integrated Precision Reference: Features an internal 10ppm/°C reference yielding a 4.096V full-scale output; also supports external reference input.
• High-Speed Serial Interface: Communicates via SPI/MICROWIRE-compatible 3-wire interface supporting SCK frequencies up to 50MHz.
• Power-On Reset Control: Configurable reset behavior; this specific suffix (HMX) resets outputs to mid-scale when using an external reference.

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems
• Optical Networking

Procurement Notes

Verify the ordering suffix HMX confirms the mid-scale reset behavior for external reference configurations. Confirm the DE package designation corresponds to the 14-lead DFN form factor. Ensure the I-grade temperature rating (-40°C to 85°C) meets system environmental requirements. Check RoHS compliance status as indicated in official documentation.

Selection Notes

Select this part when eight isolated voltage outputs are required with moderate resolution. The H-series variant necessitates a supply voltage between 4.5V and 5.5V due to the higher internal reference voltage. Choose the HMX suffix if mid-scale initialization is preferred during power-up in external reference applications. Consider the L-series variants if lower supply voltages (2.7V–5.5V) or zero-scale resets are needed.

Part Context

This component belongs to the LTC2636 family of octal DACs. Variants differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset behavior. The IDE suffix indicates the Industrial temperature grade and DFN package type within this product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided datasheet. Cross-model compatibility requires verification of pinout, electrical specifications, and software command codes against the target application requirements.