LTC2634IMSE-HZ8#TRPBF

Overview

The LTC2634IMSE-HZ8#TRPBF is a quad 8-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 2.5V and operates from a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 85°C temperature range, and a power-on reset to zero-scale. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz.

Feature Summary

• Quad 8-bit DACs with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with 2.5V full-scale output
• SPI/MICROWIRE compatible 3-wire serial interface
• Power-on reset to zero-scale for consistent initialization

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2,500 pieces. Confirm the IMSE designation corresponds to the Industrial temperature grade (-40°C to 85°C) and the 10-lead MSOP package type. Ensure compatibility with the required 2.7V to 5.5V supply voltage range for the specified performance.

Selection Notes

Select this part for applications requiring four independent 8-bit outputs with low crosstalk and high accuracy. The HZ suffix ensures the outputs reset to zero-scale upon power-up, which is critical for safety or protection circuits. Verify that the 50MHz serial clock speed meets the system timing requirements and that the MSOP package fits the PCB layout constraints.

Part Context

This component belongs to the LTC2634 family, which offers 12-, 10-, and 8-bit resolutions in both QFN and MSOP packages. The IMSE variant specifically targets industrial environments with its extended temperature range. It shares architectural similarities with the I2C-based LTC2635 but utilizes a serial interface for higher speed data transfer.

Replacement Considerations

Direct pin-compatible replacements within the same package and resolution include other LTC2634 variants with different reset behaviors or temperature grades, such as LTC2634IMSE-LZ8#TRPBF. For I2C interfaces, the LTC2635 series requires software adaptation due to protocol differences.