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CAT5221

ON Semiconductor
Part Number CAT5221
Manufacturer ON Semiconductor
Description Dual Digital Potentiometer
Published Aug 9, 2010
Detailed Description CAT5221 Dual Digital Potentiometer (POT) with 64 Taps and I2C Interface Description The CAT5221 is two digital POTs int...
Datasheet PDF File CAT5221 PDF File

CAT5221
CAT5221

Overview
CAT5221 Dual Digital Potentiometer (POT) with 64 Taps and I2C Interface Description 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 resi...


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