公开(公告)号：US09307319B2

公开(公告)日：2016-04-05

申请号：US13860164

申请日：2013-04-10

Applicant: NXP B.V.

Inventor： Klaus Reimann ,  Twan van Lippen ,  Remco Henricus Wilhelmus Pijnenburg ,  Iris Bominaar-Silkens ,  Robert Hendrikus Margaretha van Veldhoven

IPC: H04R3/02 ,  G01L9/12 ,  G01P15/125 ,  G01D5/24

CPC classification number: H04R3/02 ,  G01D5/24 ,  G01L9/12 ,  G01P15/125 ,  H04R3/06 ,  H04R2410/07

Abstract: A read out circuit for a sensor uses a feedback loop to bias the sensor to a desired operating point, such as the maximal possible sensitivity, but without the problem of an instable sensor position as known for the conventional read-out with constant charge. The reference bias to which the circuit is controlled is also varied using feedback control, but with a slower response than the main bias control feedback loop.

Abstract translation: 用于传感器的读出电路使用反馈回路将传感器偏置到期望的操作点，例如最大可能的灵敏度，但不存在如常规电荷的传统读出所知的不稳定的传感器位置的问题。 控制电路的参考偏压也可以使用反馈控制来改变，但是响应比主偏压控制反馈回路慢。