LTC2634HUD-HMX12#TRPBF

Overview

The LTC2634HUD-HMX12#TRPBF is a quad 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 from 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 temperature range, and communicates via a 50MHz SPI-compatible interface. Key electrical specifications include a maximum integral nonlinearity error of ±2.5 LSB, a settling time of 4.8µs at 5V, and a typical supply current of 0.7mA. The H suffix denotes the automotive temperature grade, while MX indicates a power-on reset to mid-scale in external reference mode.

Feature Summary

• Quad 12-bit resolution with integrated 4.096V precision reference
• Rail-to-rail output buffers with guaranteed monotonicity (-40°C to 125°C)
• 50MHz SPI/MICROWIRE compatible serial interface
• Power-on reset to mid-scale in external reference mode

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive

Procurement Notes

Verify that the specific part number corresponds to the Automotive Temperature Grade (H) and the Tape and Reel packaging configuration (TR). Confirm the power-on reset behavior matches the MX designation for mid-scale initialization in external reference mode before integration into the design.

Selection Notes

Select this component when four independent 12-bit DAC channels are required with high accuracy and wide operating temperature ranges. Ensure the system supply voltage supports the 4.5V to 5.5V requirement for the H-grade variant. Consider the MX suffix if mid-scale initialization upon power-up is necessary for downstream circuit safety.

Part Context

This part belongs to the LTC2634 family of quad DACs, which also offers 10-bit and 8-bit resolutions. Variants within the family differ by full-scale voltage (L for 2.5V, H for 4.096V), temperature grade (C, I, H), and package type (QFN or MSOP). The HUD suffix specifically identifies the 16-lead QFN package with automotive temperature rating.

Replacement Considerations

Direct replacements within the same family include LTC2634IUD-HMX12#TRPBF for industrial temperature range or LTC2634CUD-HMX12#TRPBF for commercial range. For different resolutions, consider LTC2634HUD-HMX10#TRPBF (10-bit) or LTC2634HUD-HMX8#TRPBF (8-bit).