WMS7171050S

Digital Potentiometers Overview

The WMS7171050S is a single-channel, non-volatile digital potentiometer manufactured by Winbond Electronics Corporation. It features a 50 kΩ end-to-end resistance with 100 taps and an integrated output buffer. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V within an industrial temperature range of -40°C to +85°C. Control is managed via a 3-wire Up/Down serial interface (CS, INC, U/D). Key electrical parameters include a typical wiper resistance of 80 Ω at 2.7 V and 50 Ω at 5 V, with a bandwidth of 300 kHz at the center tap.

Digital Potentiometers Feature Summary

• Single linear-taper channel with 100 taps and 50 kΩ nominal resistance
• Built-in output buffer for three-terminal voltage divider configuration only
• Non-volatile memory (NVMEM0) automatically recalls wiper position upon power-up
• Industrial operating temperature range: -40°C to +85°C

Digital Potentiometers Applications

• Programmable inverting or non-inverting gain amplifiers
• Voltage reference trimming circuits
• RF amplifier control systems

Digital Potentiometers Procurement Notes

Verify that the component is sourced from authorized distributors to ensure authenticity. Confirm the package type matches the 'S' suffix (SOIC-8) and check for any specific handling requirements related to electrostatic discharge during installation.

Digital Potentiometers Selection Notes

Select the WMS7171050S when an output buffer is required for driving loads in a voltage divider configuration. Ensure the application utilizes a 3-wire serial interface compatible with CS, INC, and U/D signals. Verify that the 50 kΩ resistance value aligns with the circuit's impedance requirements.

Digital Potentiometers Part Context

This part belongs to the WMS717x series of non-volatile digital potentiometers. The 'WMS7171' designation indicates the presence of an output buffer, distinguishing it from the WMS7170 which lacks this feature. The '050' suffix specifies the 50 kΩ resistance value, while 'S' denotes the SOIC package.

Digital Potentiometers Replacement Considerations

The WMS7170050S serves as a direct functional substitute if the output buffer is not required and a two-terminal rheostat or unbuffered divider configuration is acceptable. Other series members like WMS7171010S or WMS7171100S offer different resistance values but share the same interface and buffering characteristics.