MCP4241-503E/ST

Digital Potentiometers Overview

The MCP4241-503E/ST is a dual-channel, 7-bit digital potentiometer IC manufactured by Microchip Technology. It features an SPI serial interface and incorporates non-volatile memory with WiperLock™ technology to retain calibration settings. The device offers a nominal resistance of 50 kΩ (indicated by the -503 suffix) with 129 taps per channel. It operates within a supply voltage range of 2.7V to 5.5V for specified characteristics and supports high-voltage tolerant digital inputs up to 12.5V. The component is housed in a TSSOP-14 package.

Digital Potentiometers Feature Summary

• Dual resistor network with 7-bit resolution (129 steps) and 50 kΩ nominal resistance
• Non-volatile EEPROM memory with WiperLock™ technology for automatic wiper recall
• SPI serial interface supporting modes 0,0 and 1,1 at frequencies up to 10 MHz
• High-voltage tolerant digital inputs (CS, SCK, SDI, WP, SHDN) rated up to 12.5V

Digital Potentiometers Applications

• Audio volume control and tone adjustment circuits
• Programmable gain amplifiers and variable attenuators
• Voltage reference trimming and offset calibration
• Industrial process control loop tuning

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure that the required operating temperature range (-40°C to +125°C) aligns with the application environment. Confirm compliance requirements such as RoHS status prior to finalizing procurement orders.

Digital Potentiometers Selection Notes

Select this model when dual independent channels are required with non-volatile storage capabilities. The 50 kΩ resistance value suits applications requiring moderate impedance levels. Consider the TSSOP-14 package dimensions for PCB layout constraints. Verify that the system SPI clock speed does not exceed 10 MHz for standard operation or 1 MHz for low-voltage operation below 2.7V.

Digital Potentiometers Part Context

This component belongs to the MCP41XX/42XX/46XX family of digital potentiometers. The '42' designation indicates a dual-potentiometer configuration, while the '1' suffix specifies the presence of non-volatile memory. The '-503' code denotes the 50 kΩ resistance value. It serves as a solid-state alternative to mechanical potentiometers in precision analog signal conditioning.

Digital Potentiometers Replacement Considerations

Direct replacements include other members of the MCP424X series with compatible pinouts and memory configurations. Cross-model substitution requires verification of the number of channels, resistance values, and interface protocols. Ensure that any substitute part maintains the same non-volatile memory architecture if power-down retention is critical.