LTC2636HDE-LZ12#TRPBF

Overview

The LTC2636HDE-LZ12#TRPBF is an octal 12-bit voltage-output DAC from Analog Devices, housed in a 14-lead DFN package. It features an integrated precision 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-compatible interface with clock rates up to 50MHz. Key specifications include a maximum integral nonlinearity (INL) error of ±2.5LSB, rail-to-rail buffered outputs, and power-on reset to zero-scale. It supports double-buffered data latches and offers ultralow crosstalk between channels.

Feature Summary

• Octal 12-bit resolution with integrated 4.096V reference
• Maximum INL error of ±2.5LSB guaranteed monotonic over temperature
• Power-on reset to zero-scale for consistent initialization
• 3-wire SPI/MICROWIRE compatible serial interface

Applications

• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems
• Optical networking

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the DE package type matches the required 14-lead DFN footprint. Cross-reference the LZ12 suffix to confirm internal reference mode with zero-scale power-on reset behavior.

Selection Notes

Select this part when eight independent 12-bit channels are required in a compact DFN package. The H-grade variant is necessary for applications operating above 85°C or requiring the automotive temperature range. The LZ suffix ensures outputs initialize to zero upon power-up, which is critical for safety-sensitive downstream circuits. 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 (12-, 10-, or 8-bit), package (DFN or MSOP), and temperature grade (C, I, or H). The HDE-LZ12 configuration specifically combines the high-temperature H-grade, DFN package, and zero-scale reset functionality within the 12-bit resolution tier.

Replacement Considerations

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