MCP4361T-103E/ST

Digital Potentiometers Overview

The MCP4361T-103E/ST is a quad digital potentiometer IC featuring four independent resistor networks with non-volatile memory. It utilizes an SPI serial interface for control and offers 257 taps (8-bit resolution). The device supports resistance values of 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ, with the '103' suffix indicating a nominal 10 kΩ resistance. It operates within a supply voltage range of 2.7V to 5.5V for specified characteristics and includes WiperLock™ technology for automatic recall of wiper settings upon power-up.

Digital Potentiometers Feature Summary

• Quad Resistor Network: Contains four independent potentiometers or rheostats.
• Non-Volatile Memory: Features EEPROM with WiperLock™ technology to retain wiper settings across power cycles.
• SPI Interface: Supports high-speed serial communication at up to 10 MHz in modes 0,0 and 1,1.
• High Voltage Tolerance: Digital inputs tolerate voltages up to 12.5V.

Digital Potentiometers Applications

• Audio volume control and tone adjustment circuits
• Programmable gain amplifiers and variable attenuators
• Voltage reference trimming and calibration
• Industrial process control parameter adjustment

Digital Potentiometers Procurement Notes

Verify the specific package variant, as the datasheet lists both 14-pin TSSOP and 20-pin QFN options for the MCP4361 family. Confirm that the 'T' suffix denotes tape and reel packaging if required for automated assembly. Ensure the design accounts for the extended temperature range specifications (-40°C to +125°C) if operating in harsh environments.

Digital Potentiometers Selection Notes

Select this component when four independent digital potentiometers are required in a single package. Choose the MCP4361 over volatile variants (MCP4351) if power-down retention of the wiper position is necessary. Verify that the system's SPI controller supports the required clock speeds and mode configurations. Consider the 10 kΩ resistance value suitability for the target application's current and bandwidth requirements.

Digital Potentiometers Part Context

This part belongs to the MCP434X/436X family of 7/8-bit quad SPI digital potentiometers. The '61' designation specifically indicates the quad potentiometer configuration with non-volatile memory. The 'T' indicates tape-and-reel packaging, while '/ST' typically refers to the TSSOP package style, though QFN options exist within the same electrical family.

Digital Potentiometers Replacement Considerations

Direct replacements include other members of the MCP436X family with different resistance values (e.g., MCP4361T-503E/ST for 50 kΩ). For volatile memory applications, the MCP4351 series may be considered if power retention is not required. Cross-family replacement with MCP446x (I2C) or MCP466x (I2C) requires interface redesign.