LTC2636IMS-HZ8#PBF

Overview

The LTC2636IMS-HZ8#PBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated 10ppm/°C 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. It includes double-buffered data latches, ultralow crosstalk between DACs (<2.4nV•s), and guaranteed monotonicity over the industrial temperature range of –40°C to 85°C. Power-on reset defaults to zero-scale in internal reference mode.

Feature Summary

• Octal 8-Bit Resolution with Rail-to-Rail Output Buffer
• Integrated 4.096V Full-Scale Reference (10ppm/°C Drift)
• Industrial Temperature Range: –40°C to 85°C
• Power-On Reset to Zero-Scale

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment

Procurement Notes

Verify the specific suffix IMS indicates the 16-lead MSOP package and HZ8 denotes the 8-bit resolution with 4.096V internal reference and zero-scale power-on reset. Confirm the #PBF suffix corresponds to lead-free packaging standards required for the target assembly process.

Selection Notes

Select this part when eight independent 8-bit channels are required with a fixed 4.096V output span. Ensure the system supply voltage remains within the 4.5V to 5.5V range specified for the H-grade devices. Verify that the zero-scale power-on reset behavior aligns with downstream circuit safety requirements during initialization.

Part Context

This component belongs to the LTC2636 family of octal DACs, which offers various combinations of resolution (8-, 10-, or 12-bit), package type (DFN or MSOP), and power-on reset options. The IMS variant specifically provides the MSOP footprint suitable for space-constrained designs requiring industrial temperature performance.

Replacement Considerations

Direct substitutes include other LTC2636 variants with matching pinouts and electrical characteristics, such as the LTC2636IMS-LZ8#PBF for 2.5V operation or the LTC2636IMS-HI8#PBF for mid-scale reset. Cross-family replacements require verification of interface compatibility and thermal management.