MCP4162-103E/MS

Digital Potentiometers Overview

The MCP4162-103E/MS is a single-channel digital potentiometer IC manufactured by Microchip Technology. It features an 8-bit resolution providing 257 taps and a nominal resistance of 10 kΩ (indicated by the '103' suffix). The device operates within a supply voltage range of 2.7V to 5.5V, with serial interface logic tolerating up to 12.5V. Key specifications include a typical wiper resistance of 75 Ω, a bandwidth of 1 MHz at 10 kΩ, and non-volatile memory for wiper settings. It utilizes an SPI interface and is housed in an 8-pin MSOP package.

Digital Potentiometers Feature Summary

• Non-volatile memory with WiperLock™ technology for automatic recall of saved wiper settings
• SPI serial interface supporting modes 0,0 and 1,1 with frequencies up to 10 MHz
• High-voltage tolerant digital inputs capable of withstanding up to 12.5V
• Resistor network terminal disconnect feature via Shutdown pin or Terminal Control register

Digital Potentiometers Applications

• Gain control in audio and instrumentation circuits
• Programmable voltage references and biasing networks
• Calibration of sensor signals and measurement systems
• Adjustable filter cutoff frequency tuning

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix '/MS' corresponds to the MSOP-8 package when sourcing components. Confirm that the '103' designation matches the required 10 kΩ resistance value for the application. Ensure compatibility with the 2.7V to 5.5V operating voltage range and check for any specific environmental certifications required by the end product.

Digital Potentiometers Selection Notes

Select this component for applications requiring a single rheostat configuration with persistent memory. The 8-bit resolution offers 256 steps, suitable for moderate precision adjustments. Consider the 1 MHz bandwidth limitation compared to lower resistance variants if high-speed signal processing is involved. Verify that the host microcontroller supports the required SPI mode and voltage levels for the CS, SCK, and SDI pins.

Digital Potentiometers Part Context

This part belongs to the MCP41XX series of single resistor network digital potentiometers. It shares architectural similarities with volatile counterparts like the MCP4152 but adds EEPROM storage. The '103' code specifically denotes the 10 kΩ resistance option among available values of 5 kΩ, 50 kΩ, and 100 kΩ within the same family.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same family include the MCP4162T-103E/MS (tape and reel) or other package variants such as MCP4162-103E/SN (SOIC) or MCP4162-103E/P (PDIP), provided the pinout and electrical characteristics remain compatible with the existing design.

Digital Potentiometers FAQ

What is the maximum frequency for the SPI interface?

The SPI interface supports clock frequencies up to 10 MHz when the supply voltage (VDD) is between 2.7V and 5.5V.

How does the device handle power loss regarding wiper settings?

The MCP4162 includes non-volatile memory that automatically recalls the last saved wiper setting upon power-up, utilizing WiperLock™ technology.

Can the digital input pins tolerate voltages higher than VDD?

Yes, the digital inputs (CS, SCK, SDI, WP, SHDN) are high-voltage tolerant and can withstand up to 12.5V, even if VDD is lower.