MCP4162T-103E/SN

Digital Potentiometers Overview

The MCP4162T-103E/SN is a single-channel digital rheostat manufactured by Microchip Technology. It features an 8-bit resolution providing 257 discrete tap positions and utilizes non-volatile memory with WiperLock™ technology to retain settings. The nominal resistance between terminals A and B is 10 kΩ (indicated by the '103' suffix). The device operates on a supply voltage range of 2.7V to 5.5V and communicates via a high-speed SPI serial interface supporting modes 0,0 and 1,1. It is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package.

Digital Potentiometers Feature Summary

• Non-volatile Memory: Stores wiper settings using WiperLock™ technology for automatic recall upon power-up.
• High Voltage Inputs: Digital input pins tolerate voltages up to 12.5V, allowing compatibility with higher logic levels.
• SPI Interface: Supports clock frequencies up to 10 MHz at VDD ≥ 2.7V for rapid read/write operations.
• Rheostat Configuration: Designed as a variable resistor with zero-scale to full-scale wiper operation.

Digital Potentiometers Applications

• Precision gain control in instrumentation amplifiers
• Voltage reference trimming and calibration
• Programmable attenuation in signal conditioning circuits
• Adjustable threshold setting in comparator circuits

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure that the required resistance tolerance and temperature coefficient meet the application's design constraints before procurement.

Digital Potentiometers Selection Notes

Select this component when a non-volatile, single-channel variable resistor is required. The 10 kΩ value suits moderate impedance applications. For potentiometer configurations requiring three-terminal output, consider the MCP4161 variant instead. Verify that the system logic levels are compatible with the 12.5V tolerant inputs if operating above VDD.

Digital Potentiometers Part Context

This part belongs to the MCP414X/416X family of 7/8-bit SPI digital potentiometers. The '6' in the model number denotes 8-bit resolution (257 steps), while the '2' indicates a rheostat configuration. The 'T' signifies tape and reel packaging, and 'SN' identifies the 8-lead SOIC package.

Digital Potentiometers Replacement Considerations

The MCP4161T-103E/SN serves as a direct functional substitute if a potentiometer configuration is acceptable. Other family members like the MCP4141 or MCP4142 offer similar electrical characteristics but may differ in memory type or resolution requirements.