LTC2636HMS-LZ12#TRPBF

Overview

The LTC2636HMS-LZ12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C automotive temperature range, and a 10ppm/°C reference drift. Communication occurs via a 50MHz SPI/MICROWIRE-compatible 3-wire serial interface. Power-on reset defaults to zero-scale in internal reference mode.

Feature Summary

• Octal 12-Bit Resolution: Eight independent DAC channels with ±2.5 LSB maximum integral nonlinearity error.
• Automotive Temperature Grade: Operates reliably from –40°C to +125°C.
• Integrated Precision Reference: Provides a stable 4.096V full-scale output with 10ppm/°C temperature coefficient.
• Rail-to-Rail Output Buffers: Supports wide dynamic range with low crosstalk (<2.4nV•s).
• Power-On Reset: Resets all outputs to zero-scale upon power-up for consistent system initialization.

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2500 units. Confirm the MS package designation corresponds to the 16-lead MSOP form factor. Ensure the H-grade specification matches the required 4.5V to 5.5V supply voltage constraints for the application environment.

Selection Notes

Select this part when eight isolated 12-bit channels are required within a compact footprint. The H-grade variant necessitates a minimum 4.5V supply, distinguishing it from the L-grade which supports 2.7V. The LZ suffix ensures zero-scale power-on behavior, suitable for systems where undefined initial states must be avoided. Verify thermal management requirements for the MSOP package under continuous load conditions.

Part Context

This component belongs to the LTC2636 family of octal DACs. Variants differ by resolution (8, 10, or 12 bits), package type (DFN or MSOP), and temperature grade (C, I, or H). The H-grade specifically targets automotive applications requiring extended temperature ranges and higher supply voltages compared to commercial or industrial grades.

Replacement Considerations

Direct substitutes include other LTC2636 variants with matching pinouts and electrical characteristics, such as the LTC2636IMS-LZ12#PBF for tube packaging or different resolutions like the LTC2636HMS-LZ10#TRPBF if lower accuracy suffices. Cross-family replacements require verification of interface compatibility and output drive capabilities.