LTC2636IDE-HMX10#PBF

Overview

The LTC2636IDE-HMX10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a 10ppm/°C temperature coefficient and operates in external reference mode, setting the full-scale output to the REF pin voltage. The device provides rail-to-rail output buffers and is guaranteed monotonic over the industrial temperature range of –40°C to 85°C. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. It includes double-buffered data latches, power-on reset to mid-scale, and ultralow DAC-to-DAC crosstalk.

Feature Summary

• Octal architecture with 10-bit resolution and rail-to-rail output buffers
• Integrated 10ppm/°C precision reference or selectable external reference mode
• SPI/MICROWIRE compatible 3-wire 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
• Automotive systems
• Optical networking

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the package type corresponds to the 14-lead DFN variant as indicated by the DE suffix in the base model number. Ensure the external reference voltage supplied to the REF pin remains within the specified input range relative to VCC during operation.

Selection Notes

Select this part for applications requiring eight independent analog outputs with high channel density. The HMX suffix configuration is appropriate when system initialization requires outputs to settle at mid-scale rather than zero-scale. Verify that the external reference source can drive the REF pin without exceeding the capacitive load limits or causing instability due to the internal reference switch.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also offers 12-bit and 8-bit resolutions. Variants include the LTC2636L series for 2.5V full-scale operation and the LTC2636H series for 4.096V full-scale operation. The device is available in both 14-lead DFN and 16-lead MSOP packages, with the MSOP version providing additional hardware control pins for LDAC and CLR functions.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified documentation.