LTC2636CDE-HZ8#TRPBF

Overview

The LTC2636CDE-HZ8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated internal reference providing a 4.096V full-scale output and operates on a single 4.5V to 5.5V supply. The device includes a power-on reset circuit that initializes all outputs to zero-scale, ensuring consistent system startup. Communication is handled via a 3-wire SPI/MICROWIRE-compatible interface with clock rates up to 50MHz. It is housed in a 14-lead DFN package and supports commercial temperature ranges.

Feature Summary

• Octal 8-Bit Architecture: Contains eight independent DAC channels with rail-to-rail output buffers.
• Integrated Reference: Internal 4.096V reference ensures high accuracy without external components.
• Zero-Scale Power-On Reset: Outputs initialize to zero upon power-up for safe system start.
• High-Speed Interface: Supports SPI/MICROWIRE communication at clock frequencies up to 50MHz.

Applications

• Process Control Systems
• Industrial Automation
• Automatic Test Equipment

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 units. Confirm the DE package designation corresponds to the 14-lead DFN form factor. Ensure the HZ8 suffix matches the required 4.096V full-scale range and zero-scale reset behavior for the target application design.

Selection Notes

Select this part when eight independent analog outputs are required within a compact footprint. The H-grade variant necessitates a minimum supply voltage of 4.5V, unlike the L-grade which operates down to 2.7V. Verify that the system logic levels are compatible with the 3-wire serial interface requirements before integration.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also offers 10-bit and 12-bit resolution options. Variants within the family differ by full-scale voltage (2.5V or 4.096V), power-on reset behavior (zero or mid-scale), and operating temperature grades (Commercial, Industrial, Automotive).

Replacement Considerations

Direct substitutes include other LTC2636 variants such as LTC2636CDE-LZ8#TRPBF for lower voltage operation or LTC2636CDE-HZ10#TRPBF for higher resolution. Cross-model replacements like the LTC2637 offer I2C interfaces instead of SPI.