MCP4261-103E/SL

Digital Potentiometers Overview

The MCP4261-103E/SL is a dual-channel digital potentiometer IC featuring non-volatile memory and WiperLock technology. It provides two independent 8-bit resistor networks with 257 taps, each rated at 10 kΩ nominal resistance (±20% tolerance). The device operates on a supply voltage of 2.7V to 5.5V and communicates via a high-speed SPI serial interface supporting up to 10 MHz. Key features include low wiper resistance (typical 75 Ω), high-voltage tolerant digital inputs up to 12.5V, and an extended operating temperature range from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual 8-bit Potentiometers: Two independent channels with 257 steps and 10 kΩ nominal resistance.
• Non-Volatile Memory: EEPROM storage for wiper settings with automatic recall and WiperLock security.
• High-Speed SPI Interface: Supports 10 MHz operation in modes 0,0 and 1,1.
• Wide Operating Range: 2.7V to 5.5V supply voltage; digital inputs tolerate up to 12.5V.

Digital Potentiometers Applications

• Audio volume control and tone adjustment
• Programmable gain amplifiers
• Voltage reference trimming
• Sensor calibration

Digital Potentiometers Procurement Notes

Verify the package suffix 'SL' corresponds to the SOIC-14 specification when sourcing. Confirm that the '-103' designation matches the required 10 kΩ resistance value for the specific application circuit design.

Digital Potentiometers Selection Notes

Select this component for applications requiring persistent calibration data without external memory. Ensure the system logic levels are compatible with the 12.5V high-voltage tolerant inputs if interfacing with higher voltage buses.

Digital Potentiometers Part Context

This part belongs to the MCP42XX family of dual digital potentiometers. It shares the core architecture with single-channel variants like the MCP4161 but integrates two resistor networks into one package for space-constrained designs.

Digital Potentiometers Replacement Considerations

MCP4261-103E/ST (TSSOP-14 package)

Digital Potentiometers FAQ

What is the maximum SPI clock frequency?

The device supports an SPI clock frequency of up to 10 MHz when VDD is between 2.7V and 5.5V.

How does WiperLock Technology work?

WiperLock allows specific wiper settings stored in the Data EEPROM to be secured against further modification, protecting critical calibration values.

What is the typical wiper resistance?

The typical wiper resistance (RW) is 75 Ω at VDD = 5.5V.