MCP4362T-103E/ST

Digital Potentiometers Overview

The MCP4362T-103E/ST is a quad digital potentiometer IC featuring four independent rheostat configurations with non-volatile memory. It provides 8-bit resolution, offering 257 taps for precise resistance adjustment across a nominal 10 kΩ range (±20% tolerance). The device utilizes an SPI serial interface operating up to 10 MHz and includes WiperLock™ technology for automatic recall of saved wiper settings upon power-up. It supports a wide supply voltage range from 2.7V to 5.5V for specified characteristics and operates within an extended temperature range of -40°C to +125°C.

Digital Potentiometers Feature Summary

• Quad resistor network with 8-bit resolution (257 taps) and non-volatile memory
• SPI serial interface supporting 10 MHz clock speeds in modes 0,0 and 1,1
• WiperLock™ technology for automatic restoration of wiper positions after power cycles
• High-voltage tolerant digital inputs capable of withstanding up to 12.5V

Digital Potentiometers Applications

• Programmable gain amplifiers requiring precise analog signal attenuation
• Voltage reference trimming in precision measurement systems
• Audio volume control circuits utilizing rheostat configurations
• Calibration of sensor bias voltages in industrial instrumentation

Digital Potentiometers Procurement Notes

Verify the specific suffix 'E/ST' corresponds to the TSSOP-20 package and lead-free RoHS compliance when sourcing. Confirm that the '62' designation indicates the quad rheostat configuration rather than the potentiometer variant. Ensure the design accommodates the 12.5V high-voltage tolerant input requirements for the SPI control pins if interfacing with higher voltage logic levels.

Digital Potentiometers Selection Notes

Select this component over volatile counterparts when power-down retention of resistance settings is required without external battery backup. The quad architecture reduces board space compared to using single-channel devices. Verify that the 10 kΩ resistance value aligns with the target circuit's impedance matching requirements, as other values like 5 kΩ or 50 kΩ are available in the same family but may affect bandwidth and current handling capabilities.

Digital Potentiometers Part Context

This part belongs to the MCP434X/436X family of 7/8-bit quad SPI digital potentiometers. The 'MCP4362' specifically denotes the quad rheostat version with non-volatile memory, distinguishing it from the MCP4361 (potentiometer) and MCP4342 (volatile memory) variants. The 'T' indicates tape and reel packaging, while '/ST' specifies the 20-lead TSSOP package type.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same family include the MCP4361T-103E/ST for potentiometer applications or the MCP4342T-103E/ST if non-volatile memory is not required. Cross-family alternatives from other manufacturers require verification of pin compatibility, SPI protocol adherence, and equivalent non-volatile memory endurance specifications.