In the presentation we can learn description related to multiplier, double sampling, capacitive sensor, phase, sensor, capacitive sensor interface, and reduction. Lots of discussion about lowpass filter, sense circuits, electrical interface, filter, lowpass, circuits, and sampling are described in the presentation.
This presentation presents info about drift reduction, signal, gain, noise, demodulator, error, and interface. The following are taken from this presentation:
Boser 11 Bootstrapping +V0 C s1 = C 0 + ∆C 100fF Buffer Vx C p1 100fF C s2 = C 0 – ∆C 100fF Vout ≈ V0 1x C p2 300fF ∆C C0 V shield -V 0 V sub • Vshield = Vout = Vx —> voltage across Cp2 is always zero 2∆CV + C V 0 p1 sub Vx = 2C + C 0 p1 Cp2 effectively removed • Caveats: instability if buffer gain > 1, increased noise Capacitive Position Sense Circuits © 1996 B. Boser 25 Charge Sensing Concept +V 0 /2 q = ∆C V 0 C s1 = C 0 + ∆C q = ∆C V 0 /2 Vx = 0 C s2 = C 0 – ∆C C int q = ∆C V 0 /2 OpAmp Vout = −V0 ∆C Cint -V 0 /2 Vx is virtual ground Capacitive Position Sense Circuits © 1996 B.
Furthermore, this presentation explains information such as capacitive position, noise capacitive, amplifier, buffer, circuit, and sensor interface.