Automation Parts

ON Semiconductor Expands Range Of DPP ICs ON Semiconductor's range of digitally programmable potentiometer (DPP) ICs now includes high-resolution devices incorporating I2C and serial peripheral interface (SPI) bus connectivity. The new DPPs offer a low-noise, reliable and space-saving alternative to mechanical potentiometers, in applications ranging from instrumentation and industrial automation to portable battery-powered equipment. The ON Semiconductor CAT5171 and CAT5172 are single-channel, digitally programmable linear taper potentiometers featuring 256-position resolution. Digital control of wiper settings is made via I2C and SPI interfaces. Both devices are available with end-to-end resistance options of 50 and 100kohm. The CAT5171 and CAT5172 are insensitive to mechanical vibrations, shock, oxidation, dust and dirt, unlike their mechanical counterparts. Each device also has a low-temperature co-efficient of 100 parts per million per degrees Celsius (ppm/C). As a result...