MCP4261-104E/SL

Digital Potentiometers Overview

The MCP4261-104E/SL is a dual-channel digital potentiometer IC featuring non-volatile memory and an SPI serial interface. It provides two independent 8-bit resistor networks with 257 taps, offering a nominal resistance of 100 kΩ. The device operates within a supply voltage range of 2.7V to 5.5V and supports high-voltage tolerant digital inputs up to 12.5V. Key features include WiperLock™ technology for securing calibration settings, terminal disconnect capabilities via the SHDN pin or TCON register, and hardware/software write protection. It functions in potentiometer or rheostat configurations across an extended temperature range of -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual 8-bit resistor networks with 257 taps and 100 kΩ nominal resistance
• Non-volatile EEPROM memory with WiperLock™ technology for secure calibration storage
• SPI serial interface supporting 10 MHz operation (modes 0,0 & 1,1)
• High-voltage tolerant digital inputs (up to 12.5V) and low wiper resistance (75 Ω typical)

Digital Potentiometers Applications

• Industrial process control systems requiring precise analog signal adjustment
• Audio equipment for gain control and volume leveling
• Test and measurement instruments needing programmable attenuation

Digital Potentiometers Procurement Notes

Verify the specific package suffix 'SL' corresponds to the SOIC-14 footprint when sourcing components. Confirm that the 'E' designation indicates compliance with RoHS standards and halogen-free manufacturing requirements. Ensure the operating environment remains within the specified -40°C to +125°C temperature range to maintain electrical performance specifications.

Digital Potentiometers Selection Notes

Select this component for applications requiring persistent wiper settings after power cycles due to its non-volatile memory. Choose the 100 kΩ variant if higher impedance levels are necessary for the circuit design. Consider the MCP4231 if volatile memory is sufficient and lower cost is prioritized over data retention. Verify that the system's SPI controller supports the required clock speeds and modes.

Digital Potentiometers Part Context

This part belongs to the MCP41XX/416X/424X/426X family of single and dual SPI digital potentiometers. The '426' series specifically denotes dual potentiometers with 8-bit resolution and non-volatile EEPROM. The '-104' code specifies the 100 kΩ resistance value, while '/SL' identifies the 14-lead SOIC package type.

Digital Potentiometers Replacement Considerations

The MCP4261-104E/ST serves as a direct functional replacement using a TSSOP-14 package. For single-channel applications, the MCP4161-104E offers identical electrical characteristics with one fewer potentiometer channel.