MCP4261T-502E/ML

Digital Potentiometers Overview

The MCP4261T-502E/ML is a dual-channel, 8-bit non-volatile digital potentiometer manufactured by Microchip Technology. It features two independent resistor networks with a nominal resistance of 5 kΩ and 257 adjustable taps. The device utilizes an SPI serial interface for communication and includes WiperLock™ technology to store wiper settings in Data EEPROM. It operates within a supply voltage range of 2.7V to 5.5V and supports high-voltage tolerant digital inputs up to 12.5V. The component is designed for extended industrial temperature ranges from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual 8-bit Potentiometers: Two independent channels with 257 steps and 5 kΩ nominal resistance.
• Non-Volatile Memory: Integrated Data EEPROM with WiperLock™ technology for automatic recall of wiper settings upon power-up.
• SPI Interface: Supports standard SPI modes (0,0 and 1,1) with clock frequencies up to 10 MHz at VDD ≥ 2.7V.
• High Voltage Inputs: Digital input pins tolerate voltages up to 12.5V, facilitating split-rail applications.

Digital Potentiometers Applications

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

Digital Potentiometers Procurement Notes

Verify the package marking and datasheet revision when sourcing. Confirm that the 'T' suffix indicates tape-and-reel packaging and 'ML' denotes the MSOP package type. Ensure compatibility with system voltage levels, noting that analog characteristics are specified for VDD between 2.7V and 5.5V.

Digital Potentiometers Selection Notes

Select this model for applications requiring dual-channel resistance adjustment with persistent state retention. The 5 kΩ value offers a balance between noise immunity and power consumption. Consider the MCP4262 variant if rheostat (variable resistor) configuration is preferred over potentiometer (voltage divider) usage. Verify SPI bus speed requirements against the 10 MHz limit at full voltage.

Digital Potentiometers Part Context

This component belongs to the MCP41XX/42XX family of SPI digital potentiometers. The '6' in the part number identifies it as an 8-bit resolution device with non-volatile memory, distinguishing it from the volatile RAM-based MCP425X series. The 'T' suffix specifies reel packaging, while 'ML' indicates the 8-lead MSOP package.

Digital Potentiometers Replacement Considerations

The MCP4261T-502E/SN is a pin-compatible alternative in SOIC-8 packaging. For single-channel applications, the MCP4161T-502E provides equivalent functionality in one channel. Ensure replacement parts match the specific resistance tolerance and temperature coefficient requirements of the original design.