LTC2636IDE-LMI12#PBF

Overview

The LTC2636IDE-LMI12#PBF is an octal 12-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 2.5V. The device operates on a single supply ranging from 2.7V to 5.5V and utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It incorporates double-buffered data latches and a power-on reset circuit that initializes outputs to mid-scale in internal reference mode. The component is housed in a 14-lead DFN package and supports industrial operating temperatures from -40°C to 85°C.

Feature Summary

• Octal 12-bit resolution with rail-to-rail output buffers
• Integrated 10ppm/°C reference yielding 2.5V full-scale output
• SPI/MICROWIRE compatible 3-wire serial interface
• Power-on reset to mid-scale in internal reference mode

Applications

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

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 industrial temperature range for the application environment. Ensure the DE package type aligns with the PCB footprint design.

Selection Notes

Select this part when eight independent 12-bit channels are required within a compact form factor. The internal 2.5V reference simplifies board layout by eliminating external precision references. Choose the L-grade variant for operation below 4.5V; the H-grade requires a minimum of 4.5V supply. Verify that the mid-scale power-on reset behavior meets system initialization requirements.

Part Context

This component belongs to the LTC2636 family, which offers various resolutions (8, 10, and 12 bits) and package options including MSOP. The IDE suffix denotes the 14-lead DFN package configuration. Other variants in the series include different reset behaviors (zero-scale vs. mid-scale) and full-scale voltages (2.5V vs. 4.096V).

Replacement Considerations

Direct substitutes within the same family include LTC2636CDE-LMI12#PBF for commercial temperature ranges or LTC2636HDE-LMI12#PBF for extended automotive ranges. For lower channel counts, consider the LTC2640 (single) or LTC2632 (dual) series.