LTC2634HMSE-HMX12#TRPBF

Overview

The LTC2634HMSE-HMX12#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 with a full-scale output of 4.096V and operates from a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, double-buffered data latches, and an SPI/MICROWIRE compatible 3-wire serial interface supporting clock rates up to 50MHz. It guarantees monotonicity over the -40°C to 125°C temperature range and incorporates a power-on reset circuit that sets outputs to mid-scale in external reference mode.

Feature Summary

• Quad 12-bit resolution with ±2.5 LSB maximum integral nonlinearity error
• Integrated 4.096V full-scale precision reference with 10ppm/°C drift
• Rail-to-rail output buffers with ultralow DAC-to-DAC crosstalk (2.4nV•s)
• Power-on reset to mid-scale in external reference mode (HMX suffix)

Applications

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

Procurement Notes

Verify the HMX ordering suffix indicates mid-scale reset in external reference mode. Confirm the MSE suffix corresponds to the 10-lead MSOP package. Ensure the TRPBF suffix matches the required tape and reel quantity for production integration.

Selection Notes

Select this part when a quad 12-bit DAC with a 4.096V internal reference is required in a compact MSOP footprint. The HMX variant is necessary if the system requires outputs to initialize at mid-scale during power-up while using an external reference source. Verify supply voltage constraints align with the 4.5V to 5.5V operating range.

Part Context

This component belongs to the LTC2634 family of quad DACs available in QFN and MSOP packages. Variants differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset behavior. The HMSE designation specifically identifies the high-grade automotive temperature version in the MSOP package with external reference mid-scale reset.

Replacement Considerations

Direct substitutes within the same family include LTC2634HUD-HMX12#TRPBF (QFN package) or LTC2634IMSE-HMX12#PBF (tube packaging). Cross-package replacements require verifying pin compatibility between MSOP and QFN footprints.