LTC2636HMS-HZ8#PBF

Overview

The LTC2636HMS-HZ8#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 4.5V to 5.5V supply and includes rail-to-rail output buffers guaranteed monotonic over the –40°C to 125°C automotive temperature range. Communication is handled via a 3-wire SPI/MICROWIRE interface supporting clock rates up to 50MHz. Power-on reset defaults to zero-scale in internal reference mode.

Feature Summary

• Octal 8-Bit Resolution: Provides eight independent DAC channels with ±0.5 LSB DNL and ±0.05 LSB INL.
• Automotive Grade: Operates reliably from –40°C to 125°C with a 4.096V full-scale internal reference.
• Power-On Reset: Resets all outputs to zero-scale upon power-up for consistent system initialization.
• Low Power Consumption: Draws 1.1mA at VCC = 5V with internal reference enabled.

Applications

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

Procurement Notes

Verify the specific suffix HZ8 corresponds to the Automotive grade, Zero-scale reset, and 8-bit resolution configuration. Confirm the MS package type matches the required PCB footprint. Ensure the supply voltage meets the minimum 4.5V requirement for the H-grade variant.

Selection Notes

Select this part when an octal DAC with automotive temperature ratings is required. The HZ suffix indicates a 4.096V internal reference and zero-scale power-on reset. For lower voltage applications (2.7V–5.5V), consider the L-grade variants instead.

Part Context

This component belongs to the LTC2636 family of octal DACs available in 12-, 10-, and 8-bit resolutions. The family shares a common architecture with integrated references and SPI interfaces, differentiated by resolution, reset behavior, and operating voltage ranges.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2636HMX-HZ8#PBF (external reference mode) or LTC2636HZ8#PBF if package differences are acceptable. Verify that any substitute maintains the 4.5V minimum supply requirement.