LTC2634HMSE-LZ12#TRPBF

Overview

The LTC2634HMSE-LZ12#TRPBF is a quad 12-bit voltage output digital-to-analog converter (DAC) in a 10-lead MSOP package. It features an integrated precision reference providing a 4.096V full-scale output, operating from a 4.5V to 5.5V supply. The device includes rail-to-rail output buffers and guarantees monotonicity over the -40°C to 125°C automotive temperature range. It communicates via a 50MHz SPI-compatible interface and incorporates a power-on reset circuit that clears outputs to zero-scale upon initialization.

Feature Summary

• Quad 12-bit resolution with ±2.5 LSB maximum integral nonlinearity error
• Integrated 4.096V precision reference with 10ppm/°C drift
• AEC-Q100 qualified for automotive applications (-40°C to 125°C)
• Power-on reset to zero-scale in internal reference mode

Applications

• Automotive systems
• Process control and industrial automation
• Portable equipment

Procurement Notes

Verify the H-grade designation confirms the -40°C to 125°C automotive temperature range and the MSE suffix indicates the 10-lead MSOP package. Confirm the LZ suffix specifies the zero-scale power-on reset behavior. Ensure the #TRPBF suffix matches the required tape and reel quantity of 2,500 units for production integration.

Selection Notes

Select this part when a quad DAC configuration with high accuracy and automotive reliability is required. The 4.096V internal reference eliminates external components compared to the L-series. Verify that the 4.5V minimum supply voltage aligns with the system power rails, as the L-series supports lower voltages down to 2.7V.

Part Context

This component belongs to the LTC2634 family of quad DACs, which offers various resolutions (8, 10, 12 bits) and packages (QFN, MSOP). The HMSE variant specifically targets automotive environments with extended temperature capabilities and low-power consumption characteristics suitable for battery-operated or space-constrained designs.

Replacement Considerations

Substitutes within the LTC2634 family must match the resolution, package, and temperature grade. For example, LTC2634IMSE-LZ12#TRPBF provides identical electrical performance but is rated for the industrial temperature range (-40°C to 85°C) rather than the automotive H-grade.