LTC2636HMS-LMX10#TRPBF

Overview

The LTC2636HMS-LMX10#TRPBF is an octal 10-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 supply voltage ranging from 4.5V to 5.5V and utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes double-buffered data latches and a power-on reset circuit configured to set outputs to mid-scale in external reference mode upon startup. The component is housed in a 16-lead MSOP package and guarantees monotonicity over the automotive temperature range of –40°C to 125°C.

Feature Summary

• Octal 10-bit resolution with rail-to-rail output buffers
• Integrated 10ppm/°C reference yielding 4.096V full-scale output
• Power-on reset to mid-scale in external reference mode
• Automotive grade operation from –40°C to 125°C

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems
• Optical networking

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C and the 4.5V to 5.5V supply requirement. Ensure the LMX suffix matches the required mid-scale reset behavior for external reference configurations.

Selection Notes

Select this part when eight independent 10-bit DAC channels are required with a 4.096V span. The H-grade variant is necessary for environments exceeding 85°C. The LMX suffix ensures the outputs initialize to mid-scale rather than zero-scale or internal-reference mid-scale, which is critical for specific system power-up sequences involving external references.

Part Context

This component belongs to the LTC2636 family of octal DACs available in 12-, 10-, and 8-bit resolutions. The MSOP package distinguishes it from the DFN variants by including dedicated CLR and LDAC pins. The H-grade specification provides extended thermal performance compared to the C and I grades, supporting higher ambient temperatures in automotive and industrial applications.

Replacement Considerations

Direct substitutes within the same family include LTC2636HMS-LMI10#TRPBF (internal reference reset) and LTC2636HMS-HZ10#TRPBF (zero-scale reset). For different resolutions, consider LTC2636HMS-LMX12#TRPBF or LTC2636HMS-LMX8#TRPBF. Verify pin compatibility as all share the 16-lead MSOP footprint.