MCP4562T-502E/MS

Digital Potentiometers Overview

The MCP4562T-502E/MS is a single-channel digital potentiometer IC configured as a rheostat, manufactured by Microchip Technology. It features an 8-bit resolution providing 257 discrete taps and a nominal end-to-end resistance (R_AB) of 5 kΩ with ±20% tolerance. The device incorporates nonvolatile EEPROM memory to retain wiper settings during power loss and supports I²C serial communication at speeds up to 3.4 MHz. Operating within a supply voltage range of 1.8V to 5.5V, it includes high-voltage tolerant inputs (up to 12.5V), WiperLock™ technology for calibration security, and a terminal disconnect feature via the TCON register.

Digital Potentiometers Feature Summary

• Nonvolatile Memory: Stores wiper position in EEPROM for automatic recall upon power-up; includes 10 general-purpose memory locations.
• I²C Interface: Supports Standard (100 kHz), Fast (400 kHz), and High-Speed (up to 3.4 MHz) modes with hardware/software write protect options.
• WiperLock™ Technology: Allows specific calibration settings stored in EEPROM to be secured against modification.
• High-Voltage Inputs: Digital input pins (HVC/A0, A1, A2, SCL, SDA, WP) tolerate voltages up to 12.5V.

Digital Potentiometers Applications

• Programmable gain amplifiers and variable attenuators in signal conditioning circuits.
• Calibration and trimming of sensor interfaces requiring stable, nonvolatile resistance values.
• Audio volume control or tone adjustment systems utilizing linear taper characteristics.
• Industrial control systems operating in extended temperature environments (-40°C to +125°C).

Digital Potentiometers Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging when ordering. Confirm the '502' code corresponds to the 5 kΩ resistance value. Ensure the '/MS' designation matches the required MSOP-8 package. Check for RoHS compliance status and moisture sensitivity level requirements prior to procurement.

Digital Potentiometers Selection Notes

Select this model for applications requiring a single rheostat configuration with nonvolatile memory. The 5 kΩ resistance value suits moderate current applications; higher resistance options are available in the same family if lower current draw is needed. Ensure the system voltage falls within the 1.8V to 5.5V operational range. Verify that the I²C bus speed requirements align with the device's support for up to 3.4 MHz.

Digital Potentiometers Part Context

This component belongs to the MCP45XX series of single-channel digital potentiometers. It shares architectural similarities with the MCP454X (7-bit) and MCP455X (volatile 8-bit) variants but distinguishes itself through 8-bit resolution and nonvolatile EEPROM storage. It is part of a broader portfolio including dual-channel devices (MCP46XX) and potentiometer configurations (MCP45X1).

Digital Potentiometers Replacement Considerations

Direct substitutes include other MCP4562 variants with different resistance codes (e.g., -103E/MS for 10 kΩ) or packages. For volatile-only applications, the MCP4552T-502E/MS may serve as a functional alternative, though it lacks nonvolatile memory. Cross-reference pinouts and electrical specifications carefully before substitution.