LTC2636HDE-LZ10#PBF

Overview

The LTC2636HDE-LZ10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated 4.096V full-scale reference with a 10ppm/°C temperature coefficient, operating on a 4.5V to 5.5V supply. The device includes rail-to-rail output buffers and guarantees monotonicity over the –40°C to 125°C automotive temperature range. Communication is handled via a 50MHz SPI/MICROWIRE-compatible 3-wire serial interface. Upon power-up, the outputs reset to zero-scale. It is housed in a 14-lead 4mm × 3mm DFN package.

Feature Summary

• Octal 10-Bit Resolution: Provides eight independent DAC channels with guaranteed monotonicity and ±1 LSB INL error.
• Integrated High-Accuracy Reference: Features a built-in 4.096V reference with low drift of ±10ppm/°C.
• Automotive Temperature Grade: Rated for operation from –40°C to 125°C (H-grade).
• Zero-Scale Power-On Reset: Outputs initialize to zero upon power-up to ensure safe system startup.

Applications

• Automotive Systems
• Process Control and Industrial Automation
• Automatic Test Equipment

Procurement Notes

Verify the H-grade designation confirms the –40°C to 125°C operating range. Ensure the LZ suffix indicates the zero-scale power-on reset behavior required by the application. Confirm the DE package corresponds to the 14-lead DFN form factor.

Selection Notes

Select this part when eight isolated analog outputs are needed with high accuracy and automotive reliability. The 4.096V internal reference simplifies design compared to external reference options. Verify that the 4.5V minimum supply voltage aligns with the system power rails.

Part Context

This component belongs to the LTC2636 family of octal DACs. Variants differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and temperature grade (C, I, or H). The HDE-LZ10 specifically combines the automotive grade, DFN package, zero-scale reset, and 10-bit resolution.

Replacement Considerations

Direct substitutes within the same family include LTC2636IDE-LZ10#PBF (Industrial grade, –40°C to 85°C) or LTC2636CDE-LZ10#PBF (Commercial grade, 0°C to 70°C). For higher precision, consider the 12-bit variants such as LTC2636HDE-LZ12#PBF.