LTC2634CUD-HMX12#PBF

Digital To Analog Converters Overview

The LTC2634CUD-HMX12#PBF is a quad 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device utilizes a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. Key specifications include a maximum integral nonlinearity error of ±2.5 LSB, rail-to-rail output buffers, and ultralow crosstalk between DACs. It incorporates a power-on reset circuit that sets outputs to mid-scale in external reference mode.

Digital To Analog Converters Feature Summary

• Quad 12-bit resolution with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with 4.096V full-scale range
• SPI/MICROWIRE compatible 3-wire serial interface operating at 50MHz
• Power-on reset to mid-scale in external reference mode

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and standard tube packaging for the QFN package. Confirm the H-grade designation corresponds to the automotive temperature range of -40°C to 125°C. Ensure the MXX suffix correctly identifies the mid-scale reset behavior in external reference mode as documented in the ordering information section.

Digital To Analog Converters Selection Notes

Select this part when a quad 12-bit DAC with high accuracy and low drift is required. The H-grade variant supports higher supply voltages (4.5V to 5.5V) compared to the L-grade. The MX suffix is critical if mid-scale initialization in external reference mode is necessary for system safety or initialization sequences.

Digital To Analog Converters Part Context

This component belongs to the LTC2634 family, which includes 8-, 10-, and 12-bit variants. The CUD package denotes the commercial temperature grade (0°C to 70°C) in a 16-lead QFN format. The H suffix in the model number specifies the automotive temperature range (-40°C to 125°C), distinguishing it from lower-grade options within the same package type.

Digital To Analog Converters Replacement Considerations

LTC2634CUD-LMX12#PBF: Same package and reset behavior but different temperature grade and supply range. LTC2634IUD-HMX12#PBF: Industrial temperature grade (-40°C to 85°C). LTC2634HMX12#TRPBF: Tape and reel packaging instead of tube.