CAT524

CAT524 Configured Digitally Programmable Potentiometer (DPP™): Programmable Voltage Applications FEATURES s Four 8-bit DPPs configured as programmable APPLICATIONS s Automated product calibration s Remote control adjustment of equipment s Offset, gain and zero adjustments in voltage sources in DAC-like applications s Common reference inputs s Buffered wiper outputs s Non-volatile NVRAM memory wiper storage s Output voltage range includes both supply rails s 4 independently addressable buffered self-calibrating and adaptive control systems s Tamper-proof calibrations s DAC (with memory) substitute output wipers s 1 LSB accuracy, high resolution s Serial µP interface s Single supply operation: 2.7V-5.5V s Setting read-back without effecting outputs DESCRIPTION The CAT524 is a quad, 8-bit digitally-programmable potentiometer (DPP™) configured for programmable voltage and DAC-like applications. Intended for final calibration of products such as camcorders, fax machines and cellular telephones on automated high volume production lines, it is also well suited for self-calibrating systems and for applications where equipment which requires periodic adjustment is either difficult to access or in a hazardous environment. The four independently programmable DPPs have an output range which includes both supply rails. The wipers are buffered by rail to rail op amps. Wiper settings, stored in non-volatile NVRAM memory, are not lost when the device is powered down and are automaticall...