LTC2634IMSE-HMX12#PBF

Overview

The LTC2634IMSE-HMX12#PBF 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, requiring a supply voltage between 4.5V and 5.5V. The device utilizes a 3-wire SPI/MICROWIRE compatible interface operating at clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±2.5 LSB, a settling time of 4.8µs, and a typical supply current of 0.7mA at 5V. The unit incorporates double-buffered data latches and resets to mid-scale upon power-up.

Feature Summary

• Quad 12-bit resolution with rail-to-rail output buffers
• Integrated 4.096V precision reference with 10ppm/°C drift
• 3-wire SPI/MICROWIRE serial interface with 50MHz clock rate
• Power-on reset to mid-scale in external reference mode

Applications

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

Procurement Notes

Verify the specific suffix HMX12 corresponds to the 12-bit resolution, mid-scale reset in external reference mode, and 4.096V full-scale configuration. Confirm the MSE package designation matches the 10-lead MSOP requirement. Ensure the #PBF suffix indicates lead-free compliance for the target assembly process.

Selection Notes

Select this part when four independent 12-bit channels are required with a fixed 4.096V internal reference range. The HMX variant is appropriate if the system design requires outputs to initialize at mid-scale during power-up while utilizing an external reference source. Verify that the 4.5V to 5.5V supply constraint aligns with the system power architecture.

Part Context

This component belongs to the LTC2634 family, which offers variations in resolution (8, 10, or 12 bits), package type (QFN or MSOP), and power-on reset behavior. The IMSE designation identifies the Industrial temperature grade (-40°C to 85°C) and the MSOP package form factor within this product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.