MCP4532-104E/MS

Digital Potentiometers Overview

The MCP4532-104E/MS is a single-channel digital rheostat manufactured by Microchip Technology. It features an I²C serial interface and volatile memory, providing 129 adjustable resistance steps (7-bit resolution). The device offers a nominal resistance of 100 kΩ with a typical wiper resistance of 75 Ω. It operates within a supply voltage range of 1.8 V to 5.5 V and supports I²C clock frequencies up to 3.4 MHz. The component is housed in an 8-pin MSOP package and is rated for extended industrial temperatures from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Single-channel digital rheostat configuration with 129 taps
• I²C serial interface supporting 100 kHz, 400 kHz, and 3.4 MHz speeds
• Volatile RAM-based wiper storage with mid-scale power-on reset
• High-voltage tolerant digital inputs up to 12.5 V

Digital Potentiometers Applications

• Variable gain control in audio signal processing circuits
• Programmable bias current adjustment in sensor interfaces
• Digital trimming of reference voltages in measurement systems

Digital Potentiometers Procurement Notes

Verify the specific suffix 'E' indicates RoHS compliance and lead-free manufacturing status. Confirm the '/MS' designation corresponds to the MSOP-8 package variant. Ensure the ordering code matches the required 100 kΩ resistance value and single-rheostat topology before procurement.

Digital Potentiometers Selection Notes

Select this model when a single variable resistor controlled via I²C is required. The 100 kΩ resistance value suits applications needing higher impedance levels. The volatile memory requires external retention if power loss persistence is needed. Compare against non-volatile variants like the MCP4562 if data retention across power cycles is mandatory.

Digital Potentiometers Part Context

This component belongs to the MCP45XX family of single-channel digital potentiometers. The '3' in the part number identifies it as a 7-bit resolution device with volatile memory. The '2' suffix specifies the rheostat pinout configuration, distinguishing it from potentiometer versions which utilize all three terminals.

Digital Potentiometers Replacement Considerations

Direct functional replacements include other MCP453X series devices with matching resistance values. For non-volatile requirements, consider the MCP4562-104E/MS. Verify that substitute components support the same I²C addressing and voltage tolerances.