LTC2636HMS-LMX8#PBF

Overview

The LTC2636HMS-LMX8#PBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 16-lead MSOP package and operates with a single supply voltage of 4.5V to 5.5V. The device utilizes an external reference input, setting the full-scale output range to match the REF pin voltage. It incorporates double-buffered data latches for simplified system interfacing and includes hardware clear (CLR) and asynchronous DAC update (LDAC) pins. The unit guarantees monotonicity over the automotive temperature range of –40°C to 125°C.

Feature Summary

• Octal 8-Bit Resolution: Provides eight independent 8-bit DAC channels in a single package.
• External Reference Mode: Full-scale output is determined by the voltage applied to the REF pin.
• Automotive Grade: Guaranteed monotonic operation across the –40°C to 125°C temperature range.
• Hardware Control: Includes dedicated CLR and LDAC pins for asynchronous clearing and updating.

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free construction and tube packaging. Confirm the H-grade designation matches the required 4.5V to 5.5V supply constraint and automotive temperature specifications. Ensure the LMX suffix aligns with the external reference power-on reset requirement.

Selection Notes

Select this part when eight independent analog outputs are required with external reference flexibility. The H-grade variant is necessary for applications requiring 4.5V to 5.5V supplies. The LMX suffix ensures the outputs reset to mid-scale relative to the external reference upon power-up, which may be required for specific downstream circuit safety.

Part Context

This component belongs to the LTC2636 family of octal SPI DACs. Variants differ by resolution (8/10/12-bit), internal vs. external reference configuration, and power-on reset behavior. The MSOP package provides exposed thermal grounding capabilities distinct from the DFN option.

Replacement Considerations

Direct substitutes within the same family include LTC2636HMS-LMI8#PBF (internal reference) or LTC2636HMS-LZ8#PBF (zero-scale reset). Cross-package replacements require verifying pin compatibility between MSOP and DFN footprints.