MCP45HV51-103E/MQ

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The MCP45HV51-103E/MQ is an industrial grade, digital potentiometer with integrated non-volatile memory. It is designed to provide a programmable voltage reference, and as such, is most frequently employed in a variety of industrial, automotive, and medical applications requiring precision and reliability. This particular device comes with a single digital output with a resolution of 10-bit and is available in an 8-Pin surface-mountable package.

The MCP45HV51-103E/MQ is typically used in the adjustment of potentiometers, such as those used in motor controllers and other applications, that require turn-and-stop functionality. The device offers a wide range of features that make it suitable for such applications. These include an integrated on-chip EEPROM for non-volatile memory, an analog and digital logic interface, and internal voltage regulator. In addition, the device also offers a range of user-programmable parameters, including the following:

• Input voltage range and current limits
• Operating temperature range.
• Voltage control of analog and digital output channels.
• Pulse Width Modulation (PWM) for analog and digital output signals.
• Power-on reset circuit with internal current limit.

The MCP45HV51-103E/MQ operates on a single 3.3V supply. This device is designed to be resistant to industrial level transients, thereby making it suitable for use in a variety of industrial and automotive applications. It has an integrated power-on reset circuit that offers the required protection against unexpected power disruptions.

The MCP45HV51-103E/MQ utilizes a two-wire control bus to provide the following functions: Adjust (ADR), Up/Down (UD) and Clock (CLK). The Adjust pin is used for data input, and the Up/Down pin is used for manipulating the potentiometer. The Clock pin is used to latch the data from the Adjust pin. The device is programmed using the Remote Programmable Interface (RPI) technology, allowing the user to set parameters and determine the desired control signal output.

The MCP45HV51-103E/MQ’s working principle is based on the concept of a voltage controlled oscillator (VCO). When a signal is introduced to the Adjust pin of the device, the internal oscillator frequency is adjusted in response to the signal. This frequency adjustment controls the voltage at the potentiometer output, and as such, is used to dynamically adjust the analog output signal.

The MCP45HV51-103E/MQ is a highly versatile digital potentiometer ideal for a range of applications. Its ability to control the voltage at the output makes it particularly suitable for motor controllers that require turn-and-stop functionality. In addition, its integrated non-volatile memory, wide range of user-programmable parameters and its resistance to industrial level transients make it well suited for use in demanding automotive, industrial and medical applications.

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