A good PCB layout practice is to keep the voltage reference IC close to the analog-to-digital converter (ADC) or digital-to-analog converter (DAC), and use a star-ground configuration to minimize noise. Additionally, use a low-impedance power supply and decouple the power pins with capacitors to reduce noise.
To ensure stability and accuracy, use a stable power supply, minimize thermal gradients, and avoid exposing the device to extreme temperatures. Also, consider using a voltage reference with a low temperature coefficient, such as the MCP6V74-E/ST, which has a typical temperature coefficient of 10 ppm/°C.
The recommended output capacitor value for the MCP6V74-E/ST is 10 nF to 100 nF. A larger capacitor value can help to reduce noise, but may also increase the settling time of the voltage reference.
No, the MCP6V74-E/ST is a voltage reference, not a voltage regulator. It is designed to provide a stable voltage reference, but it does not have the capability to regulate voltage. If you need a voltage regulator, consider using a separate voltage regulator IC.
To calculate the total error budget, consider the initial accuracy, temperature coefficient, and long-term stability of the MCP6V74-E/ST, as well as the errors introduced by other components in the system, such as resistors and amplifiers. Use the datasheet specifications and application notes to estimate the total error budget.
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About Microchip
Microchip Technology Inc. is a leading manufacturer of microcontrollers and semiconductor devices for a wide range of applications in the aerospace, automotive, consumer electronics, industrial, and medical industries. Alongside a comprehensive product portfolio, Microchip Technology Inc. also provides easy-to-use development tools that enable engineers to create optimal designs quickly with minimal iterations to reduce risk while lowering total system costs to market. Headquartered in Chandler, Arizona, th
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