MCP4261T-503E/SL

Digital Potentiometers Overview

The MCP4261T-503E/SL is a dual-channel, 8-bit digital potentiometer manufactured by Microchip Technology. It features two independent resistor networks with 257 adjustable taps and a nominal resistance of 50 kΩ. The device utilizes an SPI serial interface for high-speed read/write operations to volatile wiper registers and non-volatile Data EEPROM. Key specifications include a typical wiper resistance of 75 Ω, a bandwidth of 200 kHz at 50 kΩ, and operation across a supply voltage range of 2.7V to 5.5V. It supports split-rail applications and includes WiperLock™ technology for secure calibration storage.

Digital Potentiometers Feature Summary

• Dual Resistor Network: Two independent channels with 257 positions (8-bit resolution) and 50 kΩ nominal resistance.
• Non-Volatile Memory: Integrated Data EEPROM allows automatic recall of saved wiper settings upon power-up.
• SPI Interface: Supports 10 MHz clock speeds in Modes 0,0 and 1,1 for rapid register updates.
• High Voltage Inputs: Digital inputs tolerate up to 12.5V, enabling compatibility with higher voltage logic levels.

Digital Potentiometers Applications

• Programmable gain amplifier (PGA) configuration
• Sensor signal conditioning and offset adjustment
• Audio volume and tone control circuits
• LED brightness and color temperature regulation

Digital Potentiometers Procurement Notes

Verify the package marking and date code against the official Microchip datasheet DS22059B to confirm authenticity. Ensure the ordering suffix matches the required tape-and-reel packaging format for automated assembly processes.

Digital Potentiometers Selection Notes

Select this component when dual-channel analog resistance adjustment is required without mechanical wear. The 50 kΩ value offers a balance between low noise and moderate current consumption. Verify that the system's SPI controller supports the required clock frequencies and voltage levels for reliable communication.

Digital Potentiometers Part Context

This part belongs to the MCP42XX family of dual digital potentiometers. The 'T' indicates reel packaging, '503' denotes the 50 kΩ resistance value, 'E' signifies RoHS compliance, and '/SL' identifies the SOIC-14 package type.

Digital Potentiometers Replacement Considerations

Direct replacements within the same family include the MCP4261-503E/ST (TSSOP-14 package) or MCP4261-503I/SL (Industrial temperature grade). Ensure pinout compatibility and thermal characteristics match the existing PCB design.