公开(公告)号：EP1113254A1

公开(公告)日：2001-07-04

申请号：EP99830814.2

申请日：1999-12-30

Applicant: STMicroelectronics S.r.l. ,  MAGNETI MARELLI S.p.A.

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

IPC: G01L23/22 ,  G06J1/00

CPC classification number: G01L23/225 ,  G06J1/00

Abstract: A circuit and a method are described for extending the output voltage range of an integrator circuit (22) wherein the input signal (V r ) is such as to produce an output signal (V o ) the voltage of which develops monotonically within a predetermined range of possible values.
The integrator circuit (22) is driven in a manner such that, within an integration time period (T i ), each time the signal (V o ) at its output reaches a limit of the range of values, the integrator circuit (22) starts a subsequent integration stage of the input signal (V r ) in which the output signal (V o ) develops again within the above-mentioned range. This takes place by resetting of the integrator circuit (22) or by reversal of the characteristic slope of the output signal (V o ).
The actual voltage value (V out ) of the signal is calculated from the counting of the reset pulses.

Abstract translation: 描述了用于扩展积分器电路（22）的输出电压范围的电路和方法，其中输入信号（Vr）产生其电压在可能的预定范围内单调呈现的输出信号（Vo） 值。 积分器电路（22）以这样的方式驱动，使得在积分时间段（Ti）内，每当其输出端的信号（Vo）达到值范围的极限时，积分器电路22将启动 输出信号（Vr）的后续积分级，其中输出信号（Vo）再次产生在上述范围内。 这通过复位积分器电路（22）或通过反转输出信号（Vo）的特性斜率来进行。 信号的实际电压值（Vout）由复位脉冲的计数来计算。