LTC2636IMS-HMX8#PBF

Overview

The LTC2636IMS-HMX8#PBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a high-accuracy internal reference with a temperature coefficient of 10ppm/°C and a full-scale output of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V. It includes rail-to-rail output buffers that are guaranteed monotonic over the operating temperature range. Communication is handled via a 3-wire SPI/MICROWIRE-compatible serial interface supporting clock rates up to 50MHz. The part is housed in a 16-lead MSOP package.

Feature Summary

• Octal 8-Bit DACs with integrated 4.096V full-scale reference
• Internal reference drift of 10ppm/°C
• Rail-to-rail output buffers guaranteed monotonic
• Power-on reset to mid-scale in external reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix HMX8#PBF against the manufacturer's current documentation to confirm availability and exact pinout configuration. Ensure the application supply voltage remains within the 4.5V to 5.5V range required for the H-grade internal reference operation.

Selection Notes

Select this component when eight independent 8-bit channels are required with a fixed 4.096V output span. The HMX suffix indicates power-on reset behavior sets outputs to mid-scale when using an external reference. Verify that the system supply voltage supports the minimum 4.5V requirement for the H-series internal reference.

Part Context

This part belongs to the LTC2636 family of octal DACs available in 12-, 10-, and 8-bit resolutions. The IMS designation indicates an industrial temperature grade (-40°C to 85°C). The H series specifically provides a 4.096V full-scale output, distinguishing it from the L series which offers 2.5V. The MSOP package provides a compact footprint for space-constrained designs.

Replacement Considerations

Direct replacements within the same family include LTC2636IMS-LMX8#PBF for 2.5V applications or LTC2636IMS-HMI8#PBF if zero-scale power-on reset is preferred. Cross-family alternatives like the LTC2637 offer I2C interfaces instead of SPI.