MCP4341-502E/ST

Digital Potentiometers Overview

The MCP4341-502E/ST is a quad-channel digital potentiometer IC featuring non-volatile memory and WiperLock technology. It provides four independent potentiometers with a nominal resistance of 5 kΩ and 7-bit resolution (129 taps). The device operates on an SPI serial interface supporting up to 10 MHz and accepts high-voltage tolerant inputs up to 12.5V. Power supply voltage ranges from 2.7V to 5.5V for specified characteristics, extending to 1.8V for serial interface operation only. It includes features such as terminal disconnect control, hardware/software write protection, and brown-out reset.

Digital Potentiometers Feature Summary

• Quad Potentiometer Configuration: Four independent channels with 7-bit resolution (129 taps) and 5 kΩ nominal resistance.
• Non-Volatile Memory: Stores wiper settings using EEPROM with automatic recall via WiperLock technology upon power-up.
• High-Voltage Tolerant Interface: Digital input pins tolerate voltages up to 12.5V, enabling compatibility with higher voltage logic systems.
• SPI Serial Control: Supports standard SPI modes (0,0 and 1,1) with clock frequencies up to 10 MHz for rapid register access.

Digital Potentiometers Applications

• Audio volume control and tone adjustment circuits
• Programmable gain amplifiers and sensor signal conditioning
• Voltage reference trimming and calibration systems
• Industrial process control loop adjustments

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure that the required operating temperature range aligns with the extended industrial grade (-40°C to +125°C) defined in the datasheet. Confirm pinout compatibility with the target PCB footprint prior to integration.

Digital Potentiometers Selection Notes

Select this component when multiple independent variable resistors are required within a single package. The 7-bit resolution offers a balance between precision and speed. Consider the MCP4361 variant if 8-bit resolution (257 taps) is necessary for finer adjustment steps. Verify that the system's digital logic levels are compatible with the 12.5V tolerance or require level shifting if exceeding this limit.

Digital Potentiometers Part Context

This part belongs to the MCP434X family of quad digital potentiometers manufactured by Microchip Technology. It shares architectural similarities with the MCP436X series but differs in resolution, offering 7-bit rather than 8-bit tap counts. The '502' designation specifically indicates the 5 kΩ resistor network value, while '/ST' denotes the TSSOP-14 surface-mount package.

Digital Potentiometers Replacement Considerations

The MCP4361-502E/ST serves as a direct functional replacement offering increased 8-bit resolution. For volatile-only applications, the MCP4331-502E/ST may be considered, though it lacks non-volatile storage capabilities. Ensure any substitute maintains the same quad-channel configuration and SPI interface protocol.