MCHPMCP4451-103E/ST
Overview
The MCP4451-103E/ST is a quad-channel, 8-bit digital potentiometer featuring 257 taps and a 10k Ohm end-to-end resistance. It operates over a wide voltage range of 1.8V to 5.5V and uses an I2C interface with selectable addresses, allowing multiple devices on the same bus. This volatile device is designed for applications requiring precise, digitally-controlled resistance in a compact 20-TSSOP package.
Why Choose This Part
This part offers high integration with four independent potentiometers in a single package, significantly saving board space. It supports split-rail applications and features a low shutdown current of 2.5uA, making it suitable for power-sensitive designs. The 257-tap resolution provides finer increments than standard 128-tap digital potentiometers.
Applications
Key Specifications
Getting Started
To evaluate this device, connect the I2C lines (SDA/SCL) to any microcontroller such as a PIC or Arduino, ensuring pull-up resistors are present. Use the selectable address pins to prevent bus conflicts if multiple units are used. Microchip provides the MCP44XXEV Evaluation Board for rapid prototyping and firmware development.
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