LTC2636CDE-HMI12#PBF

Overview

The LTC2636CDE-HMI12#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 4.096V. The device operates on a single 4.5V to 5.5V supply and utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes double-buffered data latches and guarantees monotonicity over the operating range. The part is housed in a 14-lead DFN package and powers up to mid-scale.

Feature Summary

• Octal 12-Bit Resolution: Provides eight independent 12-bit DAC channels with guaranteed monotonicity and low integral nonlinearity error.
• Integrated Precision Reference: Features an internal 10ppm/°C reference setting a 4.096V full-scale output for the H-grade variant.
• SPI Interface: Communicates via a standard 3-wire serial interface supporting clock frequencies up to 50MHz.
• Power-On Reset: Configured to reset outputs to mid-scale upon power-up for consistent system initialization.

Applications

• 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 packaging and tube distribution. Confirm the C-grade temperature rating (0°C to 70°C) matches the application environment requirements. Ensure the 14-lead DFN package footprint aligns with the PCB design constraints.

Selection Notes

Select this model for applications requiring eight simultaneous analog outputs with 12-bit precision. The H-grade designation ensures a 4.096V full-scale range suitable for 5V systems. The MI suffix specifies mid-scale power-on reset behavior, which is critical if downstream circuits must remain active during startup without zero-scale inputs.

Part Context

This component belongs to the LTC2636 family of octal DACs. Variants differ by resolution (8, 10, or 12 bits), temperature grade (C, I, or H), and power-on reset configuration (Zero-Scale, Mid-Scale Internal, or Mid-Scale External). The DE suffix denotes the 14-lead DFN package.

Replacement Considerations

Direct substitutes within the same family include LTC2636CDE-LMI12#PBF for lower voltage operation or LTC2636IDE-HMI12#PBF for industrial temperature ranges. Verify pin compatibility and thermal performance when swapping between DFN and MSOP packages.