MCP42010-E/P

Digital Potentiometers Overview

The MCP42010-E/P is a dual-channel, 256-tap digital potentiometer manufactured by Microchip Technology. It features a nominal resistance of 10 kΩ with a linear taper and an SPI serial interface supporting modes 0,0 and 1,1. The device operates on a single supply voltage ranging from 2.7V to 5.5V and consumes less than 1 µA in static operation. It includes hardware shutdown and reset pins for power management and state control. Packaged in a 14-pin PDIP format, it supports industrial temperature ranges from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual independent channels with 256 tap positions each
• SPI serial interface compatible with standard protocols
• Hardware shutdown pin (SHDN) and reset pin (RS)
• Low power CMOS technology with <1 µA static current

Digital Potentiometers Applications

• Replacing mechanical potentiometers in volume production
• Programmable gain amplifiers and variable filters
• Voltage reference adjustment and biasing circuits
• Audio level control and tone adjustment systems

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'E' indicates extended temperature range capability (-40°C to +125°C) as per datasheet specifications. Confirm package type 'P' corresponds to the 14-lead Plastic Dual In-Line Package. Ensure compatibility with system voltage levels within the 2.7V to 5.5V operating range before procurement.

Digital Potentiometers Selection Notes

Select this component when dual-channel resistance control is required via SPI. The 10 kΩ value suits moderate impedance applications. Consider the PDIP package only if through-hole mounting is necessary. Verify that the 256-step resolution meets the application's precision requirements compared to higher-resolution alternatives.

Digital Potentiometers Part Context

This part belongs to the MCP42XXX family of dual digital potentiometers. It shares architectural similarities with the MCP41XXX single-channel variant but adds a second channel and dedicated SHDN/RS pins. The 'E' suffix typically denotes extended temperature grading, while 'P' specifies the PDIP package style within the broader MCP41XXX/42XXX product line.

Digital Potentiometers Replacement Considerations

Direct substitutes include other MCP42XXX variants with different resistance values (e.g., MCP42050, MCP42100) or packages (e.g., MCP42010-I/SN). Ensure pinout compatibility, particularly regarding the SO pin functionality for daisy-chaining, when replacing with other dual-channel digital potentiometers.

Digital Potentiometers FAQ

What is the function of the SHDN pin?

The SHDN pin puts the device into a power-saving mode by opening the A terminal and connecting the wiper to the B terminal for all potentiometers.

How does the device behave upon power-up?

Upon power-up, the wiper position resets to the mid-scale position, corresponding to code 80h.

Can multiple MCP42010 devices be connected together?

Yes, multiple devices can be daisy-chained together using the SO (Serial Data Output) pin available on the MCP42XXX series.