LTC2634HMSE-LZ12#PBF

Overview

The LTC2634HMSE-LZ12#PBF 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 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 (INL) error of ±2.5 LSB, a settling time of 4.8µs at 5V, and a typical supply current of 0.7mA. It is housed in a 10-lead MSOP package and supports power-on reset to zero-scale.

Feature Summary

• Quad 12-bit resolution with rail-to-rail output buffers
• Integrated 4.096V precision reference with 10ppm/°C drift
• Power-on reset to zero-scale for consistent initialization
• SPI/MICROWIRE compatible 3-wire serial interface

Applications

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

Procurement Notes

Verify the specific ordering suffix #PBF confirms lead-free compliance and RoHS standards. Confirm the MSE package designation matches the required 10-lead MSOP footprint. Ensure the H-grade temperature rating (-40°C to 125°C) aligns with system thermal requirements. Cross-reference the LZ12 suffix to confirm internal reference mode and zero-scale reset behavior.

Selection Notes

Select this part when a quad DAC configuration with high accuracy is required. The 12-bit resolution and ±2.5 LSB INL suit precision applications. The 4.096V full-scale range requires a minimum 4.5V supply. Consider the MSOP package if board space constraints favor smaller footprints over QFN options. Verify that the 50MHz serial clock speed meets system timing needs.

Part Context

This component belongs to the LTC2634 family, which includes 12-, 10-, and 8-bit variants. The HMSE designation indicates the H-grade automotive temperature range, MSOP package, external reference capability (though internal is used here), and 12-bit resolution. Other family members offer different reset behaviors or lower resolutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate other LTC2634 variants based on resolution, package type, and reset configuration requirements.