The new DPP also offers five additional non-volatile registers for general purpose data storage, as well as a volatile wiper register for applications requiring temporary storage.
The integrated memory options in the CAT5140 save board space and costs compared to DAC-based design approaches, which typically require external memory and additional interconnects. Additionally, the ultra-low standby current (2 micro-amperes max) of the CAT5140, combined with integrated memory, make it ideal for mechanical potentiometer replacement in space-constrained, handheld applications. Since it is digitally programmable, the CAT5140 is insensitive to mechanical vibrations, shock and oxidation, making it much more stable and reliable than mechanical potentiometers across most environmental conditions.
The CAT5140 is a single-channel, linear-taper digital potentiometer with a 400 kilohertz (kHz), I2C-compatible interface for LCD screen adjustment; automated calibration; contrast, brightness and volume control; gain adjustment and line impedance matching applications. EEPROM endurance for the CAT5140 is 2,000,000 data write stores, two times that of competitive devices. Data retention is 100 years, which is two times higher than competitive digital potentiometers.
Features:
256 position linear-taper potentiometer;
Power supply: 2.5 volts (V) to 5.5 V;
400 kHz I2C-compatible interface;
Resistance values: 50 k ohms (kO), 100 kO;
Standby current: 2 µA (max);
2,000,000 data write stores;
100-year data retention;
Packaging: 8-lead MSOP.
Packaging and Pricing:
The CAT5140 DPP comes in a Pb-free, restriction of hazardous substance (RoHS)-compliant 8-lead MSOP package.
