MCP4451-502E/ML

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Data Acquisition - Digital Potentiometers have become increasingly popular in the IT industry in recent years. The need for efficient, accurate and cost-effective solutions has driven the growth in this field. MCP4451-502E/ML is one such Digital Potentiometer that has been designed and developed by Microchip Technology Inc. It is a low-cost, low-power, 8-bit resolving, non-volatile dual digital potentiometer.

The MCP4451-502E/ML provides an excellent solution for applications requiring an adjustable analogue or digital potentiometer. This device offers an adjustable digital or analogue output to provide a range of voltage or resistance level settings for adjustable power supplies, dimming control of incandescent lights, automatic gain control and many more applications. The MCP4451-502E/ML features a simple two-wire interface, making it easy to integrate into existing systems and to create custom solutions.

The device operates with a supply voltage between 1.8V to 5.5V and has an operating temperature range of -40°C to +85°C. It offers an adjustable resistance range of 0 to 100KΩ in 256 steps. The MCP4451-502E/ML has two wiper registers, W0 and W1, which store the step count settings. The pins indexed 0 to 7 form the connections to four linear non-volatile potentiometers in series. The device also offers an external non-volatile memory with 256 registers.

MCP4451-502E/ML features a power-on reset (POR) which enables the device to restore its original settings after power-on. This feature makes the device ideal for applications where a reliable and power-efficient performance is required. The device also features a low-power shutdown mode (LPSD) to reduce current consumption when the device is not in use.

In terms of its working principle, the MCP4451-502E/ML is an 8-bit digital potentiometer whose resistance is set by two digital words stored in the wiper registers, W0 and W1. When a logic level change occurs on SDA pin, the device reads two bytes from the two registers, W0 and W1, and adjusts the output voltage level accordingly. The power-on reset (PPOR) option allows the wiper register data to be reset to its original step count value. This ensures that the device always provides accurate and reliable results.

The MCP4451-502E/ML is a precise and cost-effective solution for real-time variable control of analogue systems. The two-wire interface makes it easy to control and configure the device. Additionally, the device offers an internal non-volatile memory to store application settings and the power-on reset (POR) feature makes the system reliable and power efficient. Furthermore, the wiper register pins provides the ability to adjust the resistance in different steps.

In conclusion, the MCP4451-502E/ML is a low-cost, low-power, 8-bit resolving, non-volatile digital potentiometer. It provides an adjustable digital or analogue output to provide a range of voltage or resistance level settings for adjustable power supplies, dimming control of incandescent lights, automatic gain control and many more applications. The device is easy to integrate due to its two-wire interface and has a low-power shutdown mode to reduce current consumption. Furthermore, the power-on reset (POR) feature ensures reliable and power-efficient results.

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