LTC2636HMS-HMI10#PBF

Overview

The LTC2636HMS-HMI10#PBF is an octal, 10-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 includes rail-to-rail output buffers and is guaranteed monotonic over the –40°C to 125°C temperature range. Communication occurs via a 50MHz SPI/MICROWIRE-compatible 3-wire serial interface. Key electrical parameters include ±1 LSB integral nonlinearity (INL), ±0.5 LSB differential nonlinearity (DNL), and a settling time of 4.3µs at 5V. The unit incorporates double-buffered data latches and resets to mid-scale upon power-up.

Feature Summary

• Octal architecture with 10-bit resolution and 4.096V full-scale internal reference
• Rail-to-rail output buffers with ultralow DAC-to-DAC crosstalk (<2.4nV•s)
• SPI/MICROWIRE compatible 3-wire serial interface operating up to 50MHz
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the H-grade automotive temperature rating (-40°C to 125°C) and MSOP-16 package configuration against specific design requirements. Confirm that the 4.5V minimum supply voltage aligns with the system power rails. Ensure compatibility with the 3-wire SPI interface timing specifications for the target microcontroller or DSP.

Selection Notes

Select this part when eight independent channels are required within a compact footprint. The H-grade variant is necessary for high-temperature automotive environments. The HMI suffix indicates mid-scale reset behavior suitable for applications where downstream circuits require a defined initial state during power-up. Consider the L-grade if a lower 2.7V supply voltage is available.

Part Context

This component belongs to the LTC2636 family, which offers octal configurations in 14-lead DFN and 16-lead MSOP packages. Variants exist with 8-, 10-, and 12-bit resolutions, as well as different full-scale voltages (2.5V or 4.096V). The HMI10 designation specifically identifies the 10-bit resolution, 4.096V reference, and mid-scale reset options within the automotive grade subset.

Replacement Considerations

Public confirmed substitute part numbers: None.