LTC2636HDE-HMX8#PBF

Overview

The LTC2636HDE-HMX8#PBF 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, providing 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 supporting clock rates up to 50MHz. This specific part number indicates a 16-lead MSOP package with power-on reset to mid-scale in external reference mode.

Feature Summary

• Octal architecture with eight independent 8-bit DAC channels
• Integrated 4.096V full-scale reference with ±10ppm/°C drift
• Rail-to-rail output buffers with ultralow crosstalk (<2.4nV•s)
• Automotive grade operation from –40°C to 125°C

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring multi-channel precision
• Optical networking infrastructure components
• Portable battery-powered instrumentation

Procurement Notes

Verify the ordering suffix #PBF confirms lead-free construction and tube packaging. Confirm the H-grade designation matches the required –40°C to 125°C operating temperature range for the target application environment. Ensure the MSOP-16 package footprint aligns with the PCB layout specifications.

Selection Notes

Select this part when eight synchronized voltage outputs are required with automotive reliability. The H-series provides a higher 4.096V span compared to the L-series 2.5V variant. Choose the MX suffix if mid-scale initialization is preferred during power-up in external reference configurations. Verify supply voltage constraints allow for the minimum 4.5V requirement.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also includes 10-bit and 12-bit resolution variants. The family shares identical pinouts and serial interface protocols across resolutions. The HDE suffix specifically denotes the 16-lead MSOP package form factor combined with the H-grade automotive temperature rating.

Replacement Considerations

Direct substitutes within the same family include LTC2636HDE-HMI8#PBF (internal reference reset) or LTC2636HDE-LZ8#PBF (zero-scale reset). For different resolutions, consider LTC2636HDE-HMX10#PBF or LTC2636HDE-HMX12#PBF. Cross-family replacements require verification of pin compatibility and reference voltage levels.