公开(公告)号：US20010017564A1

公开(公告)日：2001-08-30

申请号：US09751927

申请日：2000-12-29

Applicant: STMicroelectronics S.r.I.

Inventor： Michelangelo Mazzucco ,  Vanni Poletto ,  Melano Carlo Lorenzo Protti

IPC: G06G007/18

CPC classification number: G01L23/225 ,  G06J1/00

Abstract: A circuit extends the output voltage range of an integrator circuit wherein the input signal is used to produce an output signal, and the voltage of the output signal develops monotonically within a predetermined range of possible values. The integrator circuit is driven within an integration time period such that each time the signal at its output reaches a limit of the range of values, the integrator circuit starts a subsequent integration stage of the input signal in which the output signal develops again within the above-mentioned range. This takes place by resetting the integrator circuit or by a reversal of the characteristic slope of the output signal. This is combined with storing the number of occasions on which these interventions have occurred as determined by a counter. This enables the actual voltage value of the signal resulting from the integration to be calculated by a relatively straightforward mathematical operation from the reading of the counter, and from the signal currently present at the output of the integrator at the end of the integration period.

Abstract translation: 电路扩展积分器电路的输出电压范围，其中输入信号用于产生输出信号，并且输出信号的电压在可能值的预定范围内单调发展。 积分电路在积分时间段内被驱动，使得每当其输出端的信号达到值范围的极限时，积分器电路开始输入信号的后续积分级，其中输出信号在上述范围内再次产生 提到的范围。 这通过复位积分器电路或反转输出信号的特性斜率来进行。 这与存储由柜台确定的这些干预发生的场合的数量相结合。 这使得通过来自计数器的读数的相对简单的数学运算以及在积分周期结束时当前存在于积分器的输出端的信号来计算由积分产生的信号的实际电压值。