A/D - hold

• Hold state using logically controlled analog switches

  • Top plates disconnected from VL
  • Bottom plates switched from VX to VL

• QH = 16 (VL - VI)

  • conservation of charge QS = QH
  • 16 (VX - VL) = 16 (VL - VI)
  • VX - VL = VL - VI (output of op-amp)

VX

VL

VH

Previous slide

Next slide

Back to first slide

View graphic version