LTC2636CDE-HMX12#TRPBF

Overview

The LTC2636CDE-HMX12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 14-lead DFN package and operates within a 4.5V to 5.5V supply range, providing a full-scale output of 4.096V when using the internal reference. The device integrates a high-accuracy reference with a temperature coefficient of 10ppm/°C. Communication is handled via a 3-wire SPI/MICROWIRE-compatible serial interface supporting clock rates up to 50MHz. Power-on reset is configured to mid-scale in external reference mode.

Feature Summary

• Octal architecture with eight independent 12-bit DAC channels
• Integrated precision reference yielding 4.096V full-scale output
• SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock rate
• Power-on reset to mid-scale in external 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 HMX12#TRPBF against official documentation to confirm the power-on reset behavior and packaging details. Ensure the application environment supports the required 4.5V to 5.5V supply voltage for specified performance. Confirm that the 14-lead DFN package footprint matches the PCB design requirements.

Selection Notes

Select this component when eight independent 12-bit voltage outputs are required in a compact form factor. The H suffix indicates operation from a 4.5V to 5.5V supply with a 4.096V full-scale range. The MX suffix specifies a power-on reset to mid-scale in external reference mode. Verify compatibility with the system's SPI clock speed and logic levels.

Part Context

This part belongs to the LTC2636 family of octal DACs available in various resolutions and packages. The DE suffix denotes the 14-lead DFN package. The C grade indicates a commercial temperature range of 0°C to 70°C. Other variants include the I grade for industrial temperatures and the MSOP package option.

Replacement Considerations

Direct substitutes within the same family include other LTC2636 variants with different resolutions or reset configurations. For single-channel applications, consider the LTC2640. For I2C interfaces, the LTC2637 is an alternative. Verify pinout and electrical specifications before substitution.

FAQ

What is the full-scale output voltage for the LTC2636CDE-HMX12?

The full-scale output voltage is 4.096V when operating with the internal reference.

How does the power-on reset function work for this specific part number?

The HMX suffix indicates that the DAC outputs reset to mid-scale in external reference mode upon power-up.

What is the maximum serial clock frequency supported by the LTC2636?

The device supports a serial clock frequency of up to 50MHz.