LTC2636HDE-HZ10#TRPBF

Overview

The LTC2636HDE-HZ10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. 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 communicates via a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit that clears outputs to zero-scale upon initialization.

Feature Summary

• Octal architecture with eight independent 10-bit DAC channels in a 14-lead DFN package
• Integrated 4.096V full-scale reference with ±10ppm/°C drift
• Power-on reset to zero-scale for consistent system initialization
• SPI/MICROWIRE compatible 3-wire serial interface operating at 50MHz

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the H-grade designation ensures operation within the automotive temperature range of –40°C to +125°C. Ensure the DE package code corresponds to the 14-lead plastic DFN form factor required for the design.

Selection Notes

Select this part when an octal configuration with 10-bit resolution is required alongside a fixed 4.096V internal reference. The H-grade variant is necessary for applications requiring operation up to 125°C. Verify that the supply voltage remains between 4.5V and 5.5V, as lower voltages are not supported by the H-series full-scale output.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also offers 8-bit and 12-bit resolutions. Variants exist with different full-scale voltages (2.5V or 4.096V), power-on reset behaviors (zero-scale or mid-scale), and temperature grades (Commercial, Industrial, Automotive). The HZ10 specifically denotes the 10-bit resolution, zero-scale reset, and automotive grade.

Replacement Considerations

Direct substitutes include other LTC2636 variants with matching resolution and package, such as LTC2636HDE-HZ12#TRPBF (12-bit) or LTC2636HDE-HZ8#TRPBF (8-bit). For external reference applications, consider the HMX series. Cross-family replacements like the LTC2637 offer I2C interfaces instead of SPI.