LTC2636HDE-HZ8#PBF

Overview

The LTC2636HDE-HZ8#PBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated high-accuracy reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V and includes rail-to-rail output buffers that are guaranteed monotonic over the –40°C to 125°C automotive temperature range. Communication is handled via a 3-wire SPI/MICROWIRE-compatible interface supporting clock rates up to 50MHz. The part incorporates a power-on reset circuit configured to clear outputs to zero-scale upon initialization.

Feature Summary

• Octal 8-bit DAC architecture with integrated 4.096V full-scale internal reference
• Automotive grade operation (-40°C to 125°C) with guaranteed monotonicity
• SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock rate
• Power-on reset to zero-scale for consistent system initialization

Applications

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

Procurement Notes

Verify the specific ordering suffixes against the manufacturer's current documentation to ensure compatibility with required package types and lead-free specifications. Confirm that the H-grade designation aligns with the necessary operating temperature range and supply voltage requirements for the target application environment.

Selection Notes

Select this component when an octal DAC configuration with automotive reliability is required. The H-series variant supports a 4.096V full-scale output and requires a minimum supply voltage of 4.5V. Ensure the design accommodates the 14-lead DFN package thermal characteristics and provides adequate bypassing for the REF pin to maintain noise performance.

Part Context

This part belongs to the LTC2636 family of octal DACs, which offers variations in resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset behavior. The HDE suffix indicates the 14-lead DFN package and H-grade temperature rating, while the Z8 suffix specifies the 8-bit resolution and zero-scale power-on reset mode.

Replacement Considerations

Direct substitutes within the same family include other LTC2636 variants with different resolutions or reset behaviors, such as LTC2636HDE-HZ10#PBF or LTC2636HDE-HMI8#PBF, provided the pinout and electrical parameters remain compatible with the existing design constraints.