MCP4342T-502E/ST

Digital Potentiometers Overview

The MCP4342T-502E/ST is a quad-channel digital potentiometer IC manufactured by Microchip Technology. It features four independent rheostat configurations with a nominal resistance (R_AB) of 5 kΩ and 129 taps (7-bit resolution). The device utilizes an SPI serial interface operating at frequencies up to 10 MHz and includes non-volatile memory for wiper settings via WiperLock™ technology. It operates within a supply voltage range of 2.7V to 5.5V, supports high-voltage tolerant digital inputs up to 12.5V, and functions across an extended temperature range of -40°C to +125°C.

Digital Potentiometers Feature Summary

• Quad resistor network with 5 kΩ nominal resistance and 129 taps per channel
• SPI serial interface supporting 10 MHz clock speeds in modes 0,0 and 1,1
• Non-volatile memory with automatic recall and WiperLock™ technology
• High-voltage tolerant digital inputs capable of withstanding up to 12.5V

Digital Potentiometers Applications

• Programmable gain amplifiers requiring precise resistance adjustment
• Voltage reference trimming in measurement systems
• Audio volume control circuits using rheostat configuration
• Sensor biasing and calibration networks

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and tape/reel specifications. Ensure compatibility with system voltage levels, particularly regarding the high-voltage tolerant input thresholds. Confirm that the SPI mode matches the controller's timing requirements before integration.

Digital Potentiometers Selection Notes

Select this component when a quad-channel rheostat configuration is required with non-volatile storage. The 5 kΩ resistance value suits applications needing moderate current handling. Verify that the 7-bit resolution meets the precision requirements, as higher tap counts are available in other variants within the MCP436X series.

Digital Potentiometers Part Context

This part belongs to the MCP434X family of quad SPI digital potentiometers. It shares architectural similarities with the MCP4341 (potentiometer version) and MCP4362 (8-bit resolution version). The 'T' indicates tape and reel packaging, while '/ST' denotes the TSSOP-20 package option.

Digital Potentiometers Replacement Considerations

The MCP4341T-502E/ST serves as a functional substitute if a potentiometer configuration is acceptable instead of a rheostat. For applications requiring higher resolution, the MCP4362T-502E/ST provides 8-bit operation with identical pinout and interface characteristics.