MCP4341T-502E/ST

Digital Potentiometers Overview

The MCP4341T-502E/ST is a quad-channel digital potentiometer IC from Microchip Technology, featuring non-volatile memory and WiperLock™ technology. It provides four independent potentiometer networks with 7-bit resolution (129 taps) and a nominal resistance of 5 kΩ. The device operates on a supply voltage range of 2.7V to 5.5V and communicates via an SPI serial interface supporting up to 10 MHz. Key features include high-voltage tolerant digital inputs (up to 12.5V), terminal disconnect capabilities, and hardware/software write protection.

Digital Potentiometers Feature Summary

• Quad Resistor Network: Four independent potentiometers with 7-bit resolution (129 taps).
• Non-Volatile Memory: Stores wiper settings using EEPROM with WiperLock™ technology for automatic recall.
• SPI Interface: Supports 10 MHz clock speeds in modes 0,0 and 1,1 with high-speed read/write access.
• High-Voltage Inputs: Digital input pins tolerate voltages up to 12.5V, enabling split-rail applications.

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 requiring remote resistance adjustment.

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'E/ST' corresponds to the TSSOP-14 package and reel packaging configuration as defined in the official datasheet. Confirm that the '-502' suffix indicates the 5 kΩ resistance value. Ensure compliance with RoHS directives and check for AEC-Q100 qualification if automotive application requirements are necessary.

Digital Potentiometers Selection Notes

Select this component when four independent digital potentiometers are required in a single package. The 7-bit resolution offers 128 steps, suitable for applications not requiring fine 8-bit granularity. The 5 kΩ resistance value balances power consumption and noise performance. Verify that the SPI interface timing meets the system controller's specifications, particularly regarding CS setup and hold times.

Digital Potentiometers Part Context

This part belongs to the MCP434X series, which distinguishes itself from the MCP433X series by including non-volatile EEPROM memory instead of volatile RAM. It shares the same physical footprint and pinout as the MCP436X series but differs in resolution (7-bit vs. 8-bit). The 'T' in the part number denotes tape and reel packaging, while '/ST' specifies the TSSOP-14 package type.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same family include the MCP4341-502E/ST (tube packaging) or the MCP4361-502E/ST (8-bit resolution). For volatile memory applications, the MCP4331-502E/ST may be considered, though it lacks non-volatile storage. Ensure any substitute matches the TSSOP-14 package dimensions and SPI compatibility.