CAT5269

The CAT5269 is two digitally programmable potentiometers (DPPs™) integrated with control logic and 18 bytes of NVRAM memory. Each DPP consists of a series of 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 8-bit control register (WCR) independently controls the wiper tap switches for each DPP. Associated with each wiper control register are four 8-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 2-wire serial bus. On power-up, the contents of the first data register (DR0) for each of the four potentiometers is automatically loaded into CAT5269 respective wiper control registers.

The CAT5269 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. It is available in the -40°C to 85°C industrial operating temperature range and offered in a 24-lead SOIC and TSSOP packages.