WMS7130050M

Digital Potentiometers Overview

The WMS7130050M is a single-channel, non-volatile digital potentiometer manufactured by Winbond Electronics Corporation. It features a 50 kΩ end-to-end resistance and 32 linear taps, controlled via a 3-wire Up/Down serial interface (CS, INC, U/D). The device operates on a single supply voltage ranging from 2.7V to 5.5V within an industrial temperature range of -40°C to +85°C. As indicated by the '0' in the part number, this specific model lacks an output buffer, allowing it to function as either a two-terminal variable resistor or a three-terminal voltage divider. It includes one non-volatile memory location for automatic wiper position recall upon power-up.

Digital Potentiometers Feature Summary

• Single channel with 32 taps and 50 kΩ nominal resistance
• Non-volatile memory retains wiper position after power loss
• 3-wire Up/Down serial interface for control
• 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 that the component is sourced from authorized distributors to ensure authenticity. Confirm the package type matches the 'M' suffix (MSOP) and check for any preliminary status updates in the latest datasheet revisions. Ensure the application circuit supports the lack of an output buffer if buffering is required.

Digital Potentiometers Selection Notes

Select the WMS7130050M when a buffered output is not needed, as the WMS7131 series provides this feature. Ensure the system voltage stays within the 2.7V to 5.5V range. Verify that the 3-wire interface timing requirements are met by the controlling microcontroller. Consider the MSOP package dimensions for PCB layout constraints.

Digital Potentiometers Part Context

This component belongs to the WMS713x family of non-volatile digital potentiometers. The 'WMS7130' prefix denotes the version without an output buffer, while 'WMS7131' indicates the version with a buffer. The '050' suffix specifies the 50 kΩ resistance value, and 'M' indicates the 8-pin MSOP package. The family offers 10 kΩ, 50 kΩ, and 100 kΩ options.

Digital Potentiometers Replacement Considerations

Direct replacements include other WMS7130 variants with different resistances (WMS7130010S/M/P for 10 kΩ, WMS7130100S/M/P for 100 kΩ) or packages. For buffered applications, the WMS7131 series is the functional equivalent but requires consideration of the added buffer characteristics.