CAT5241 Quad Digitally Programmable Potentiometers (DPP™) with 64 Taps and 2-wire Interface

Quad Digitally Programmable Potentiometers (DPP™) with 64 Taps and I²C Interface

Four linear-taper digitally programmable potentiometers

64 resistor taps per potentiometer

End to end resistance 2.5kΩ, 10kΩ, 50kΩ or 100kΩ

Potentiometer control and memory access via I²C interface

Low wiper resistance, typically 80Ω

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 1μA

1,000,000 nonvolatile WRITE cycles

100 year nonvolatile memory data retention

20-lead SOIC and TSSOP packages

Industrial temperature range

The CAT5241 is four Digitally Programmable Potentiometers (DPPs™) integrated with control logic and 16 bytes of EEPROM memory. Each DPP 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 DPP. 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 CAT5241 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.

Audio equipment

Electronic games

Automotive

Industrial control


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