GENERAL DESCRIPTION
The WMS7204 is a 256-tap, quad-channel non-volatile digital potentiometer available in 10KΩ, 50KΩ and 100KΩ end-to-end resistances. These devices can be used as a three-terminal potentiometer or as a two terminal variable resistor in a wide variety of applications.

FEATURES
• 256 taps for each potentiometer
• Four independent, linear-taper channels in one package
• End-to-end resistance available in 10KΩ, 50KΩ and 100KΩ
• Selectable output buffer for each channel
• SPI Serial Interface for data transfer and potentiometer control
• Daisy-chain operation for multiple devices
• Nonvolatile storage of four wiper positions per channel with power-on recall from NVMEM0
• Low standby current (1µA Max. with output buffer inactive)
• Endurance 100K typical stores per bit
• Register Data Retention 100 years
• Industrial temperature range: -40 ~ 85°C
• Wide operating voltage range: 2.7V ~ 5.5V
• Package option:
   ◾ 20-pin TSSOP, 20-pin SOIC, 20-pin PDIP