MCP4801T-E/MS

Digital To Analog Converters Overview

The MCP4801T-E/MS is a single-channel, 8-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 internal 2.048V voltage reference with a 50 ppm/°C temperature coefficient. The device supports SPI communication with clock speeds up to 20 MHz and offers selectable unity or 2x gain outputs. Key electrical parameters include a typical settling time of 4.5 µs, operating current of 330 µA, and an extended temperature range from -40°C to +125°C. It is housed in an MSOP-8 package.

Digital To Analog Converters Feature Summary

• Features a rail-to-rail buffered analog output amplifier for high accuracy.
• Includes a precision internal voltage reference eliminating external components.
• Supports simultaneous latching of the DAC output via the LDAC pin.
• Provides hardware shutdown capability to minimize power consumption.

Digital To Analog Converters Applications

• Set point or offset trimming
• Sensor calibration
• Precision selectable voltage reference
• Portable instrumentation

Digital To Analog Converters Procurement Notes

Verify the component against official datasheet specifications before integration. Confirm that the ordering suffix matches the required package type and temperature grade. Ensure compatibility with system voltage levels and interface timing requirements. Review environmental compliance documentation for specific project constraints.

Digital To Analog Converters Selection Notes

Select this model when an 8-bit resolution is sufficient for the application's accuracy requirements. Consider the internal reference and gain settings to determine if external components are needed. Evaluate the power budget, as the device offers low active current and a dedicated shutdown mode for battery-operated systems.

Digital To Analog Converters Part Context

This component belongs to the MCP4801/4811/4821 family of voltage output DACs. The series differentiates primarily by resolution, offering 8-bit, 10-bit, and 12-bit options respectively. All members share identical interfaces, packages, and core architectural features, allowing for scalable design upgrades within the same ecosystem.

Digital To Analog Converters Replacement Considerations

The MCP4901 serves as a comparable alternative within the Microchip portfolio. While it shares similar performance metrics, the MCP4901 utilizes an external voltage reference rather than an internal one. Designers must account for this difference when evaluating circuit complexity and component count.

Digital To Analog Converters FAQ

How is the full-scale output voltage determined?

The full-scale output is determined by the internal 2.048V reference multiplied by the selected gain setting (1x or 2x). This allows the output range to be configured between 0V to 2.048V or 0V to 4.096V.

What is the function of the LDAC pin?

The LDAC pin enables synchronous updating of the DAC output. When driven low, it transfers data from the input register to the DAC register, ensuring all channels update simultaneously if used in multi-channel configurations.

How does the device behave during shutdown mode?

In shutdown mode, most internal circuits are powered down to save energy. The analog output enters a high-impedance state with a typical resistance of 500 kΩ, while the serial interface remains active to allow wake-up commands.