LTC2636HMS-LMX12#TRPBF

Overview

The LTC2636HMS-LMX12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 16-lead MSOP package and operates within a 4.5V to 5.5V supply range, providing a full-scale output of 4.096V when using the internal reference. The device includes an integrated precision reference with a temperature coefficient of 10ppm/°C and communicates via a 3-wire SPI/MICROWIRE-compatible interface supporting clock rates up to 50MHz. It guarantees monotonicity over the –40°C to 125°C automotive temperature range and incorporates a power-on reset circuit that sets outputs to mid-scale in external reference mode.

Feature Summary

• Octal architecture with eight independent 12-bit DAC channels in a 16-lead MSOP package
• Integrated 10ppm/°C precision reference yielding a 4.096V full-scale output
• SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock capability
• Guaranteed monotonic operation across the –40°C to 125°C automotive temperature range

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring multi-channel precision
• Automotive electronic control units
• Optical networking infrastructure

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the H-grade designation matches the required –40°C to 125°C operating temperature range for the target application environment. Ensure the LMX12 configuration aligns with the need for mid-scale power-on reset behavior in external reference mode.

Selection Notes

Select this part when eight synchronized 12-bit channels are required with high accuracy and automotive reliability. The H-grade variant necessitates a minimum 4.5V supply, distinguishing it from the L-grade which supports 2.7V. The LMX suffix specifies mid-scale reset in external reference mode; choose LZ12 for zero-scale reset or LMI12 for mid-scale reset in internal reference mode if those behaviors better suit the system initialization requirements.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also offers 8-bit and 10-bit resolution variants. The family shares identical pinouts and interface protocols but differs in linearity specifications and power-on reset configurations. The MSOP package provides a compact footprint suitable for dense PCB layouts compared to larger DFN options available in the same series.

Replacement Considerations

Direct substitutes within the same package and functionality include other LTC2636 variants such as LTC2636HMS-LMI12#TRPBF or LTC2636HMS-LZ12#TRPBF, depending on the required power-on reset state. Cross-family replacements like the LTC2637 offer I2C interfaces instead of SPI.