LTC2636IDE-LZ8#TRPBF

Overview

The LTC2636IDE-LZ8#TRPBF 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 2.5V and operates on a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the temperature range, and double-buffered data latches. Communication occurs via a 3-wire SPI/MICROWIRE interface supporting clock rates up to 50MHz. This specific variant provides power-on reset to zero-scale in internal reference mode and is housed in a 14-lead DFN package.

Feature Summary

• Octal 8-Bit Resolution: Eight independent DAC channels with 8-bit resolution.
• Integrated Reference: Internal 10ppm/°C reference providing 2.5V full-scale output.
• Power-On Reset: Resets outputs to zero-scale upon power-up in internal reference mode.
• SPI Interface: 3-wire serial interface compatible with standard SPI and MICROWIRE protocols.

Applications

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

Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the DE package designation corresponds to the 14-lead DFN form factor. Ensure the LZ suffix matches the requirement for zero-scale power-on reset behavior in internal reference mode. Check that the I grade meets the -40°C to 85°C industrial temperature specification.

Selection Notes

Select this part when eight low-channel-count DACs are required with precise zero-state initialization. The 8-bit resolution suits applications where high precision is not critical but channel count is. Verify that the 2.5V internal reference span fits the system voltage requirements. Consider the external reference option if a different full-scale voltage is needed.

Part Context

This component belongs to the LTC2636 family of octal DACs. Variants differ by resolution (8, 10, or 12 bits), package type (DFN or MSOP), temperature grade (C, I, or H), and power-on reset behavior (Zero, Mid-Scale Internal, or Mid-Scale External). The IDE-LZ8 designation specifies the Industrial grade, DFN package, Zero-scale reset, and 8-bit resolution.

Replacement Considerations

Direct substitutes within the same family include other LTC2636 variants with matching pinouts. For higher resolution, consider LTC2636IDE-LZ10 or LTC2636IDE-LZ12. For commercial temperature ranges, the C-grade equivalents are available. Ensure any replacement maintains the zero-scale reset characteristic if required by the design.