MCP4362-104E/ST

Digital Potentiometers Overview

The MCP4362-104E/ST is a quad rheostat digital potentiometer IC featuring non-volatile memory and WiperLock technology. It provides four independent resistor networks with 8-bit resolution (257 taps) and a nominal resistance of 100 kΩ. The device operates on a supply voltage ranging from 2.7V to 5.5V, with high-voltage tolerant digital inputs up to 12.5V. Communication is handled via a serial peripheral interface supporting speeds up to 10 MHz. Key features include terminal disconnect control, hardware and software write protection, and an extended operating temperature range from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Quad Rheostat Configuration: Four independent variable resistors with 8-bit resolution (257 taps).
• Non-Volatile Memory: Stores wiper settings using EEPROM with WiperLock technology for automatic recall upon power-up.
• High-Speed SPI Interface: Supports 10 MHz operation in modes 0,0 and 1,1 with high-voltage tolerant inputs (up to 12.5V).
• Terminal Disconnect: Allows individual resistor network terminals to be disconnected via the TCON register.

Digital Potentiometers Applications

• Programmable gain amplifiers requiring precise resistance adjustment.
• Voltage divider circuits for biasing or level shifting.
• Audio volume control applications utilizing rheostat configuration.
• Industrial sensor calibration where non-volatile setting retention is required.

Digital Potentiometers Procurement Notes

Verify the specific suffix 'E/ST' corresponds to the TSSOP-14 package and lead-free RoHS compliance as indicated by the datasheet. Confirm that the '104' designation matches the required 100 kΩ resistance value for the application. Ensure the design supports the 2.7V to 5.5V supply range and utilizes the SPI protocol correctly.

Digital Potentiometers Selection Notes

Select this component when a quad rheostat configuration is needed rather than a potentiometer. The 100 kΩ resistance value suits applications requiring higher impedance levels. Consider the 100 ppm/°C temperature coefficient over the full industrial range (-40°C to +125°C) for precision requirements. Verify that the 75 Ω typical wiper resistance is acceptable for the signal path.

Digital Potentiometers Part Context

This part belongs to the MCP434X/436X family of quad digital potentiometers. The '62' suffix denotes a quad rheostat with 8-bit resolution and non-volatile memory. It shares the same pinout and core functionality as the MCP4361 but differs in internal connection for rheostat use. The 'E' indicates environmental compliance, and '/ST' specifies the TSSOP-14 package.

Digital Potentiometers Replacement Considerations

The MCP4361-104E/ST is a compatible alternative if a potentiometer configuration is preferred over a rheostat, provided the external circuitry supports floating one terminal. Other family members like the MCP4342 offer similar features but lack non-volatile memory.