MCP4262-503E/MF

Digital Potentiometers Overview

The MCP4262-503E/MF is a dual-channel digital potentiometer IC featuring non-volatile memory and WiperLock™ technology. It provides two independent rheostat networks with 8-bit resolution, offering 257 discrete taps. The nominal resistance between terminals A and B is 50 kΩ (indicated by the -503 suffix). 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 Resistor Network: Contains two independent 50 kΩ resistor networks configured as rheostats with 8-bit (257 tap) resolution.
• Non-Volatile Memory: Includes Data EEPROM for wiper settings and application-specific calibration data secured by WiperLock™ Technology.
• High-Speed SPI Interface: Supports standard SPI modes 0,0 and 1,1 with clock frequencies up to 10 MHz at VDD ≥ 2.7V.
• High Voltage Tolerant Inputs: Digital control pins (CS, SCK, SDI, WP, SHDN) tolerate voltages up to 12.5V, enabling compatibility with higher voltage logic systems.

Digital Potentiometers Applications

• Industrial process control systems requiring precise analog signal adjustment.
• Audio equipment for gain control and volume leveling.
• Instrumentation for sensor biasing and reference voltage trimming.
• Automotive electronics utilizing high-voltage tolerant interfaces.

Digital Potentiometers Procurement Notes

Verify the specific package variant against the ordering suffix; the 'MF' suffix denotes a 10-lead DFN package. Confirm that the required resistance value matches the '-503' designation (50 kΩ). Ensure the design supports the 2.7V to 5.5V supply range and utilizes the SPI protocol for communication.

Digital Potentiometers Selection Notes

Select this component when dual independent variable resistors are needed without volatile memory loss upon power cycling. The 50 kΩ resistance value is suitable for moderate current applications. Consider the DFN package for space-constrained PCB layouts. Verify that the host microcontroller can drive the SPI interface within the specified timing constraints.

Digital Potentiometers Part Context

This part belongs to the MCP414X/416X/424X/426X family of single and dual SPI digital potentiometers. The '62' in the model number identifies it as an 8-bit resolution dual rheostat configuration. It shares the same core architecture and interface protocols as other members of the series, differing primarily in resolution, channel count, and memory type.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same family include the MCP4242-503E/MF (7-bit resolution) or MCP4252-503E/MF (volatile memory only). Cross-family replacements like the MCP4652 require I2C interface adaptation. Verify pinout compatibility and thermal performance when substituting packages.