MCP4811T-E/SN

Overview

The MCP4811T-E/SN is a single-channel, 10-bit buffered voltage output Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It operates from a single 2.7V to 5.5V supply and features an SPI-compatible serial interface supporting up to 20 MHz clock speeds. The device includes a high-precision internal 2.048V voltage reference with a 50 ppm/°C temperature coefficient. Key electrical specifications include a typical settling time of 4.5 µs, rail-to-rail output capability, and selectable unity or 2x gain. It supports hardware and software shutdown modes for power optimization and functions within an extended temperature range of -40°C to +125°C.

Feature Summary

• Integrates a precision internal voltage reference with low noise and temperature drift characteristics.
• Features a resistive string architecture ensuring monotonicity and fast settling times.
• Supports simultaneous latching of DAC outputs via the LDAC pin for synchronized updates.

Applications

• Set point or offset trimming in industrial control systems.
• Sensor calibration for temperature, pressure, and humidity signals.
• Precision selectable voltage reference sources.
• Portable instrumentation powered by battery supplies.
• Calibration of optical communication devices.

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and tape-and-reel configuration. Ensure the component meets RoHS compliance requirements for your assembly process. Confirm that the E-grade variant aligns with your specified operating temperature range and performance criteria before finalizing procurement orders.

Selection Notes

Select this component when a single-channel, 10-bit resolution is required with integrated reference capabilities. Consider the MCP4811 over the MCP4801 if higher resolution is needed, or over the MCP4821 if lower power consumption at reduced resolution is preferred. Verify that the SOIC-8 package dimensions fit the target PCB layout constraints.

Part Context

This part belongs to the MCP48X1 family of single-channel DACs, which also includes the 8-bit MCP4801 and 12-bit MCP4821 variants. These devices share identical pinouts, interfaces, and core architectural features, differing primarily in resolution and associated LSB sizes. The family is designed for applications requiring calibrated analog outputs from digital controllers.

Replacement Considerations

Direct functional substitutes within the same family include the MCP4801 and MCP4821, provided resolution differences are acceptable. Cross-family replacements may require verification of pin compatibility and register mapping. Always validate thermal resistance and package dimensions when substituting with alternative manufacturers' components.