onsemi CAT5221WI-50-T1

The CAT5221 is two digital POTs integrated with control logic and 16 bytes of NVRAM memory. Each digital POT consists of a series of 63 resistive elements connected between two externally accessible end points. The tap points between each resistive element are connected to the wiper outputs with CMOS switches. A separate 6-bit control register (WCR) independently controls the wiper tap switches for each digital POT. Associated with each wiper control register are four 6-bit non-volatile memory data registers (DR) used for storing up to four wiper settings. Writing to the wiper control register or any of the non-volatile data registers is via a I²C serial bus. On power-up, the contents of the first data register (DR0) for each of the four potentiometers is automatically loaded into its respective wiper control register (WCR). The CAT5221 can be used as a potentiometer or as a two terminal, variable resistor. It is intended for circuit level or system level adjustments in a wide variety of applications.

• Two Linear-taper Digital Potentiometers
• 64 Resistor Taps per Potentiometer
• End to End Resistance 2.5 kΩ, 10 kΩ, 50 kΩ or 100 kΩ
• Potentiometer Control and Memory Access via I²C Interface
• Low Wiper Resistance, Typically 80 Ω
• Nonvolatile Memory Storage for Up to Four Wiper Settings for Each Potentiometer
• Automatic Recall of Saved Wiper Settings at Power Up
• 2.5 to 6.0 Volt Operation
• Standby Current less than 1 μA
• 1,000,000 Nonvolatile WRITE Cycles
• 100 Year Nonvolatile Memory Data Retention
• 20-lead SOIC and TSSOP Packages
• Industrial Temperature Range
• These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant