MCP4801-E/SN

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Data Acquisition – Digital to Analog Converters (DAC) has a broad range of applications that extend from the microelectronic world to the ‘real’ world. In this article we will focus on the application field and working principle of the MCP4801-E/SN DAC and how it enables us to convert digital data into analog electrical signals.

Applications of MCP4801-E/SN

The MCP4801-E/SN is an 8-bit digital-to-analog converter with a parallel-format output and Non Volatile Memory (NVM). It operates from a single +2.7V to +5.5V power supply and is capable of outputting currents up to 20mA. It is suitable for a range of applications including embedded systems, industrial, consumer and automotive. These include:

• Calibration systems
• Motor control
• Audio/audio output
• Telecommunications
• Test and measurement
• HVAC systems
• Automated test equipment
• Lighting
• Mobile device accessories

Working Principle of MCP4801-E/SN

The MCP4801-E/SN has two control registers, the DAC Control register (DACCR) and the non-volatile memory register (NVCR). The DACCR is used to set the output voltage and the NVCR contains the NVM settings used to determine the behavior of the DAC. The MCP4801-E/SN contains an 8-bit DAC and an 8-bit NVM registers. The 8-bit output resolution allows for a simple and reliable conversion between digital and analog signals.

The DAC Control register (DACCR) is used to set the output voltage of the DAC. The DACCR is configured as an 8-bit register and is accessed using an 8-bit I2C interface. The DACCR can be programmed with a value from 0-255. This value is then used to generate an analog voltage on the DAC output, with a maximum output resolution of 2.5V.

The NVM settings determine the behavior of the DAC. The NVM can be programmed with values that specify the desired output scaling, offset, and other variables. The NVM settings are stored in the non-volatile memory register (NVCR), which can only be accessed using a special I2C access key.

Once the DACCR and NVCR have been programmed, the MCP4801-E/SN will then output a voltage based on the digital input data. The output voltage will be scaled and offset according to the programmed values. The MCP4801-E/SN also has a power down mode that can be used to reduce power consumption.

Conclusion

The MCP4801-E/SN is a 8-bit digital-to-analog converter that can convert digital data into analog electrical signals. The device is suitable for a range of applications and its power down mode reduces power consumption when not in use. It is programmed using an 8-bit I2C interface and the nons-volatile memory can be programmed with values that determine the output scaling and offset.

The MCP4801-E/SN is a versatile and reliable device that can be used in a range of applications. Its accuracy and resolution makes it an ideal choice for many applications, such as motor control, audio/audio output, lighting and automated test equipment, among others.

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