LTC2636IDE-HZ10#PBF

Overview

The LTC2636IDE-HZ10#PBF 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 utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes double-buffered data latches and a power-on reset circuit that initializes outputs to zero-scale in internal reference mode. The component is housed in a 14-lead DFN package.

Feature Summary

• Octal 10-bit resolution with rail-to-rail output buffers
• Integrated 4.096V full-scale reference with ±10ppm/°C drift
• Power-on reset to zero-scale for consistent initialization
• Ultralow DAC-to-DAC crosstalk (<2.4nV•s)

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free construction and tube packaging. Confirm the 'I' grade designation matches the required -40°C to +85°C operating temperature range for the application environment. Ensure the H-grade voltage specifications align with the system's 4.5V to 5.5V supply constraints.

Selection Notes

Select this part when eight independent voltage outputs are required within a compact footprint. The H-grade variant is necessary for applications demanding a 4.096V full-scale range, distinguishing it from the L-grade 2.5V version. The Z-suffix ensures the outputs initialize to zero upon power-up, which is critical for safety or noise-sensitive downstream circuits.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also offers 12-bit and 8-bit resolutions. Variants exist with different reset behaviors (MI/MX for mid-scale) and packages (MSOP). The IDE designation specifically identifies the Industrial temperature grade and 14-lead DFN form factor.

Replacement Considerations

Direct substitutes include other LTC2636 variants such as LTC2636IDE-LZ10#PBF for 2.5V operation or LTC2636IDE-HZ12#PBF for higher 12-bit resolution. For I2C interfaces, the LTC2637 series serves as a functional alternative.