MCP4241T-503E/SL

Digital Potentiometers Overview

The MCP4241T-503E/SL is a dual-channel, non-volatile digital potentiometer IC manufactured by Microchip Technology. It features two independent 7-bit resistor networks with 129 tap positions and a nominal resistance of 50 kΩ. The device utilizes an SPI serial interface for high-speed read/write operations to both volatile wiper registers and non-volatile EEPROM. Key specifications include a typical wiper resistance of 75 Ω, a supply voltage range of 2.7 V to 5.5 V, and operation across an extended temperature range of -40°C to +125°C. It incorporates WiperLock™ technology for secure calibration settings.

Digital Potentiometers Feature Summary

• Dual Potentiometer Configuration: Two independent channels with 128 resistors (129 steps) per channel.
• Non-Volatile Memory: Stores wiper settings in Data EEPROM with automatic recall upon power-up.
• High Voltage Tolerant Inputs: Digital inputs (CS, SCK, SDI, WP, SHDN) tolerate up to 12.5 V.
• SPI Interface: Supports Mode 0,0 and Mode 1,1 with clock frequencies up to 10 MHz.

Digital Potentiometers Applications

• Audio volume control and tone adjustment
• Programmable gain amplifiers
• Variable voltage references
• Calibration of sensor circuits

Digital Potentiometers Procurement Notes

Verify the specific package marking and date code against the manufacturer's latest documentation. Confirm that the 'T' suffix indicates tape and reel packaging and the '/SL' suffix denotes the SOIC-14 narrow package. Ensure compliance with RoHS directives as specified in the official datasheet.

Digital Potentiometers Selection Notes

Select this component when dual-channel non-volatile resistance adjustment is required. The 50 kΩ value suits moderate impedance applications. For lower impedance needs, consider the 5 kΩ or 10 kΩ variants within the same family. Ensure the system voltage falls within the 2.7 V to 5.5 V operating range.

Digital Potentiometers Part Context

This part belongs to the MCP414X/416X/424X/426X family of single and dual SPI digital potentiometers. It is distinguished from volatile counterparts (MCP423X) by its integrated EEPROM and from rheostat configurations (MCP4242) by its potentiometer terminal arrangement.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same family include MCP4241T-103E/SL (10 kΩ), MCP4241T-104E/SL (100 kΩ), and MCP4241T-502E/SL (5 kΩ). Verify pin compatibility and memory type before substitution.

Digital Potentiometers FAQ

What is the maximum SPI clock frequency?

The maximum SCK input frequency is 10 MHz when VDD is between 2.7 V and 5.5 V.

How many taps does the resistor network have?

As a 7-bit device, it offers 128 resistors resulting in 129 distinct tap positions.

Can the digital inputs handle voltages higher than VDD?

Yes, the CS, SCK, SDI, WP, and SHDN pins are high-voltage tolerant up to 12.5 V.