MCP4652-502E/UN

Digital Potentiometers Overview

The MCP4652-502E/UN is a dual-channel digital potentiometer IC featuring volatile memory and an I2C serial interface. It provides two independent rheostat configurations with 8-bit resolution, offering 257 discrete taps. The nominal resistance between terminals A and B is 5 kΩ with a ±20% tolerance. The device operates on a supply voltage ranging from 1.8V to 5.5V, with analog characteristics specified for 2.7V to 5.5V. Key electrical parameters include a typical wiper resistance of 75 Ω, a maximum operating temperature of +125°C, and a typical inactive current of 2.5 µA.

Digital Potentiometers Feature Summary

• Dual resistor network with 8-bit (257 tap) resolution
• I2C serial interface supporting 100 kHz, 400 kHz, and 3.4 MHz speeds
• High-voltage tolerant digital inputs up to 12.5V
• Brown-out reset protection with typical threshold of 1.5V

Digital Potentiometers Applications

• Programmable gain amplifiers
• Voltage reference adjustment
• Digital control of analog signal paths

Digital Potentiometers Procurement Notes

Verify the specific suffix 'E/UN' against the manufacturer's datasheet to confirm the MSOP-10 package and lead-free status. Ensure the system design accounts for volatile memory behavior, as wiper settings are lost upon power loss. Confirm that the I2C bus speed requirements align with the device's AC characteristics for the chosen supply voltage.

Digital Potentiometers Selection Notes

Select this component when a dual-channel rheostat configuration is required with high-voltage tolerant logic inputs. The 5 kΩ resistance value suits applications requiring moderate current handling. Consider the volatile memory type if power-down state retention is not needed, or choose a non-volatile variant from the same family if data preservation is critical.

Digital Potentiometers Part Context

This part belongs to the MCP465X family within the broader MCP45XX/MCP46XX series of I2C digital potentiometers. It shares architectural features with single-potentiometer variants like the MCP4552 and non-volatile counterparts such as the MCP4662. The '502' code specifically denotes the 5 kΩ resistance value.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same package include other MCP465X variants with different resistance values (e.g., MCP4652-103E/UN for 10 kΩ). For non-volatile requirements, the MCP4662 series offers similar functionality with EEPROM storage.