| 摘要 |
<p>A time-independent, dual-slope analog to digital converter is disclosed. During a first integration period, a predetermined number of charge packets having a first polarity and a magnitude proportional to the magnitude of an analog voltage to be converted are applied to a charge storage element. The first integration period is followed by a second integration period during which a second plurality of charge packets are applied to the charge storage element. The second plurality of charge packets each have a polarity opposite to that of the first plurality of charge packets and a predetermined, constant magnitude. The number of second charge packets required to return the charge stored in the charge storage element to its original value is indicative of the magnitude of the analog signals to be converted.</p> |
