The MCP42100-I/ST is a dual-channel, 8-bit digital potentiometer designed and manufactured by Microchip Technology. This versatile component offers a reliable and precise method for adjusting resistance values electronically, without the need for mechanical potentiometer adjustments. It is housed in a compact TSSOP-14 package, making it suitable for space-constrained applications.

Features

• Resolution: The MCP42100-I/ST offers an 8-bit (256 steps) resolution, allowing for fine adjustments of resistance values.
• Dual Channel: It features two independent potentiometer channels, which can be used for adjusting two separate signals simultaneously.
• Wide Operating Voltage: The device supports a wide operating voltage range from 2.7V to 5.5V, compatible with various logic levels and suitable for both 3.3V and 5V systems.
• Total Resistance: Each potentiometer has a total end-to-end resistance of 100 kΩ, providing a broad range of adjustment possibilities.
• Serial Interface: The MCP42100-I/ST utilizes the industry-standard SPI (Serial Peripheral Interface) for communication, facilitating easy integration into existing digital systems.
• Non-volatile Memory: It includes non-volatile memory for storing the wiper position, ensuring that the last set resistance value is maintained even after power cycling.
• Temperature Range: The device operates over an industrial temperature range of -40°C to +125°C, making it suitable for a wide variety of applications, including harsh environments.

Applications

The MCP42100-I/ST is a versatile component that can be utilized in a myriad of applications. It is particularly useful in:

• Automated adjustments in audio control systems
• Calibration and tuning in industrial control systems
• Adjustable power supplies and regulators
• LED brightness control
• Programmable filters and oscillators

With its precision, reliability, and digital interface, the MCP42100-I/ST from Microchip Technology is an excellent choice for designers and engineers looking to incorporate digital potentiometers into their electronic designs.