PCap04 Datasheet | ams

Description PCap04 is a capacitance-to-digital converter (CDC) with integrated digital signal processor (DSP) for on-chip data post-processing. Its front end is based on ams PICOCAP principle. This conversion principle offers outstanding flexibility with respect to power consumption, resolution and speed. Further, PCap04 covers a wide capacitance input range from a few femtofarads up to several hundreds of nanofarads. It is easy to configure the PCap04 for different capacitance measurement tasks, i.e. single as well as differential sensors in both, grounded or floating connection. The on-chip DSP allows to implement sensor algorithms like linearization and temperature pensation, with data output in a digital (SPI or IIC) or analog (PDM/PWM) way. Ordering Information and Content Guide appear at end of datasheet. Figure 1: Added Value of Using PCap04 Key Benefits & Features The benefits and features of PCap04, Capacitance-to-Digital Converter are listed below: Benefits - High flexibility: Easy adaption to various applications - ultra low power, high resolution or high speed - just by configuration - High resolution or high speed - On-chip DSP for sensor algorithms, signal post-processing including linearization and temperature pensation - On-chip and external temperature measurement capability Features - Up to 6 capacitors grounded, 3 capacitors floating - Capacitance range 1p F to 100n F - Internal reference 1p F to 31p F - Integrated guard driver - Up to 8a F at 2.5Hz and 10p F base capacitance - Up to 50k Hz sample rate - Up to 20-bit resolution - 32-bit DSP - 3k ROM code, 1k NVRAM - 96 x 32 bit RAM - SPI / IIC interface - PDM / PWM outputs, GPIO - Supply voltage 2.1/3.0V to 3.6V - Operating current down to 3μA - PCap04-Bxxx -40°C to 85°C - PCap04-Axxx -40°C to 125°C - QFN24 or die (1.588mm x 1.46mm) ams Datasheet [v1-03] 2018-Apr-04 Page 1 Document Feedback Figure 2: Functional Blocks of PCap04 - General Description Applications MEMS Sensors The PCap04...