MCP4161T-502E/MS

Digital Potentiometers Overview

The MCP4161T-502E/MS is a single-channel non-volatile digital potentiometer from Microchip Technology, housed in an 8-lead MSOP package. It features a 5 kΩ resistance value with 257 taps (8-bit resolution) and linear taper characteristics. The device operates on a supply voltage range of 2.7V to 5.5V for specified analog performance, supporting serial interface operation down to 1.8V. Key specifications include a typical wiper resistance of 75 Ω, a bandwidth of 2 MHz at 5 kΩ, and high-voltage tolerant digital inputs up to 12.5V. It utilizes WiperLock™ technology for non-volatile memory retention.

Digital Potentiometers Feature Summary

• Non-volatile memory with WiperLock™ technology for automatic recall of saved wiper settings
• SPI serial interface operating at frequencies up to 10 MHz (modes 0,0 & 1,1)
• High-voltage tolerant digital inputs capable of withstanding up to 12.5V
• Single resistor network configured as a potentiometer with 257 steps

Digital Potentiometers Applications

• Gain control in audio and instrumentation circuits
• Voltage reference adjustment
• System calibration and trimming
• Programmable gain amplifiers

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'MS' corresponds to the MSOP-8 package type when sourcing components. Confirm that the 'T' designation indicates tape and reel packaging if bulk quantities are required. Ensure the voltage requirements align with the 2.7V to 5.5V specification for full analog performance guarantees.

Digital Potentiometers Selection Notes

Select this component for applications requiring persistent resistance settings without external battery backup. The 5 kΩ value suits moderate current applications, while the 257-step resolution provides fine adjustment capabilities. Consider the MSOP package dimensions for space-constrained PCB layouts compared to SOIC or PDIP alternatives.

Digital Potentiometers Part Context

This part belongs to the MCP416X series, which offers single-channel non-volatile digital potentiometers. It shares architectural similarities with the MCP414X series but supports a wider low-voltage operational range starting at 1.8V for digital interfaces. The device integrates 10 general-purpose EEPROM locations for application-specific data storage alongside the wiper setting.

Digital Potentiometers Replacement Considerations

Direct replacements within the same family include the MCP4161-502E/SN (SOIC package) or MCP4161-502E/P (PDIP package). For dual-channel requirements, the MCP4261 series is available. Verify pin compatibility and thermal resistance differences when substituting between package types.