MCP4241-502E/SL

Digital Potentiometers Overview

The MCP4241-502E/SL is a dual-channel digital potentiometer IC featuring non-volatile memory and WiperLock™ technology. It provides two independent potentiometer networks with 7-bit resolution, offering 129 discrete tap positions. The nominal resistance between terminals A and B is 5 kΩ with a ±20% tolerance. The device operates on a supply voltage range of 2.7V to 5.5V and communicates via a high-speed SPI serial interface supporting up to 10 MHz. Key features include hardware write protection, terminal disconnect capabilities, and an extended operating temperature range from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual Potentiometer Configuration: Contains two independent resistor networks with 7-bit (129-step) resolution.
• Non-Volatile Memory: Stores wiper settings in Data EEPROM with automatic recall upon power-up.
• WiperLock™ Technology: Allows calibration settings to be secured in the EEPROM to prevent modification.
• High-Voltage Tolerant Inputs: Digital input pins tolerate voltages up to 12.5V, facilitating mixed-voltage system integration.

Digital Potentiometers Applications

• Audio volume control and tone adjustment circuits
• Programmable gain amplifiers and variable attenuators
• Voltage reference trimming and offset adjustments
• Industrial process control parameter setting

Digital Potentiometers Procurement Notes

Verify the specific package suffix 'SL' corresponds to the 14-lead SOIC package when sourcing components. Confirm that the 'E' designation indicates compliance with RoHS standards and halogen-free manufacturing requirements. Ensure the ordering code matches the exact resistance value and memory type specified for the application design.

Digital Potentiometers Selection Notes

Select this component over volatile counterparts when persistent resistance settings are required without external battery backup. The 5 kΩ resistance value is suitable for moderate current applications; higher resistance options like 50 kΩ or 100 kΩ are available if lower power consumption is prioritized. Verify that the system's SPI controller supports the required clock speeds and modes for reliable data transfer.

Digital Potentiometers Part Context

This part belongs to the MCP414X/416X/424X/426X family of single and dual digital potentiometers. It shares architectural similarities with the MCP4231 but distinguishes itself through the inclusion of non-volatile EEPROM memory instead of volatile RAM. This family utilizes a standardized SPI interface and offers various resistance values and package options to suit different PCB layout constraints.

Digital Potentiometers Replacement Considerations

The MCP4231-502E/SL serves as a functional substitute if non-volatile storage is not required, though wiper settings will reset on power cycle. For rheostat configurations, the MCP4242 series may be considered. Cross-referencing pinouts and electrical characteristics is essential before substituting any device within the broader digital potentiometer category.