CAT5251 Overview
The CAT5251 is four Digitally Programmable Potentiometers (DPPs™) integrated with control logic and 16 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.
CAT5251 Key Features
- Four linear-taper digitally programmable potentiometers
- 254 resistor taps per potentiometer
- End to end resistance 50kΩ or 100kΩ
- Potentiometer control and memory access via SPI interface
- Low wiper resistance, typically 100Ω
- 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
