The diaphragm of a condensermicrophone is the movable plateof a capacitor. With a polarized capacitor,the vibration of the diaphragm inrelation to the back plate produces anac audio-output voltage.

Two new ICs are described as fully integrated devices that offer direct capacitance-to-digital and impedance-to-digital conversion. The single-chip AD7745 integrates all stages of ...

OK, settle down at the back of the room, gentlemen and ladies! I know it made a nice change for you all that Jorge ran the last class (“An Appendix to Filter Wizard #14 (“Match Point”)”) while I was ...

Paul Whytock reports on integrated converters that tackle the signal-processing challenges of direct capacitance-to-digital and impedance-to-digital conversion. The world's first high-precision, ...