MCP4141T-502E/SN

Digital Potentiometers Overview

The MCP4141T-502E/SN is a single-channel digital potentiometer from Microchip Technology, featuring non-volatile memory and WiperLock™ technology. It offers 128 taps (7-bit resolution) with a nominal resistance of 5 kΩ. The device operates on an SPI serial interface at frequencies up to 10 MHz and supports a supply voltage range of 2.7V to 5.5V. Key electrical characteristics include a typical wiper resistance of 75 Ω, a bandwidth of 2 MHz for the 5 kΩ variant, and high-voltage tolerant digital inputs capable of withstanding up to 12.5V. It is housed in an 8-pin SOIC package.

Digital Potentiometers Feature Summary

• Non-volatile EEPROM storage with WiperLock™ technology for automatic recall of saved settings.
• SPI serial interface supporting 10 MHz operation in modes 0,0 and 1,1.
• High-voltage tolerant digital inputs (CS, SCK, SDI, WP, SHDN) rated up to 12.5V.
• Extended temperature range operation from -40°C to +125°C.

Digital Potentiometers Applications

• Gain control in audio and instrumentation circuits.
• Voltage reference adjustment in data acquisition systems.
• Programmable biasing for analog front-end components.
• Calibration settings requiring persistent configuration retention.

Digital Potentiometers Procurement Notes

Verify the specific suffix 'SN' corresponds to the SOIC-8 package and 'T' indicates tape-and-reel packaging when sourcing. Confirm that the '502' code accurately reflects the 5 kΩ resistance value required for the design. Ensure compatibility with the 2.7V to 5.5V operating voltage range and check for any specific moisture sensitivity level requirements during assembly.

Digital Potentiometers Selection Notes

Select this component for applications requiring a single potentiometer channel with persistent state retention after power loss. The 5 kΩ resistance value is suitable for moderate current loads. Consider the 12.5V input tolerance if interfacing with higher voltage logic levels. For rheostat configurations, ensure terminal A or B is left floating as per datasheet guidelines.

Digital Potentiometers Part Context

This part belongs to the MCP414X family of single-channel SPI digital potentiometers with non-volatile memory. It shares architectural similarities with volatile counterparts like the MCP4131 but includes EEPROM for data retention. The 'T' suffix denotes reel packaging, while 'SN' specifies the SOIC-8 footprint, distinguishing it from MSOP or PDIP variants within the same series.

Digital Potentiometers Replacement Considerations

Direct replacements must match the 5 kΩ resistance, 7-bit resolution, and non-volatile memory features. Volatile alternatives like the MCP4131-502E require external battery backup to retain settings. Dual-channel devices such as the MCP4241 offer similar functionality but occupy more pins and may not fit space-constrained designs without schematic modification.