WMS7110050P

Digital Potentiometers Overview

The WMS7110050P is a single-channel, non-volatile digital potentiometer manufactured by Winbond (now Nuvoton). It features a 50 kΩ end-to-end resistance with 128 linear taps and operates on a single supply voltage ranging from 2.7V to 5.5V. The device utilizes a 3-wire Up/Down serial interface for wiper control and includes one non-volatile memory location (NVMEM0) that automatically recalls the wiper position upon power-up. Packaged in an 8-pin PDIP format, it functions as either a two-terminal variable resistor or a three-terminal voltage divider without an output buffer.

Digital Potentiometers Feature Summary

• Single channel with 128 linear taps and 50 kΩ nominal resistance
• Non-volatile memory retains wiper position across power cycles
• 3-wire Up/Down serial interface (CS, INC, U/D)
• Industrial temperature range: -40°C to +85°C

Digital Potentiometers Applications

• Programmable gain amplifiers
• Voltage reference trimming
• RF amplifier control

Digital Potentiometers Procurement Notes

Verify the manufacturer designation carefully, as this component was originally produced by Winbond Electronics Corporation before its microcontroller division became Nuvoton Technology Corporation. Confirm the specific package type matches the 'P' suffix for 8-pin PDIP. Ensure the design accounts for the lack of an output buffer, distinguishing it from the WMS7111 series which includes buffering capabilities.

Digital Potentiometers Selection Notes

Select the WMS7110050P when a 50 kΩ resistance value is required. If an output buffer is necessary for driving low-impedance loads, the WMS7111050P variant must be used instead. For applications requiring different resistance values, choose between the 10 kΩ (010) or 100 kΩ (100) options within the same family. Verify that the system can accommodate the 3-wire serial control logic for wiper adjustment.

Digital Potentiometers Part Context

This component belongs to the WMS711x WinPot series of non-volatile digital potentiometers. The part number structure indicates the model (WMS7110), resistance (050 for 50kΩ), and package (P for PDIP). It is functionally similar to other variants like the WMS7110010P and WMS7110100P, differing primarily in resistance value, while sharing the same 128-tap architecture and interface protocol.

Digital Potentiometers Replacement Considerations

Direct substitutes include the WMS7110010P (10 kΩ) and WMS7110100P (100 kΩ) if resistance values are flexible. For buffered versions, the WMS7111050P serves as a functional equivalent with added output buffering. Cross-manufacturer replacements require verifying pin compatibility and electrical specifications against the original datasheet.