公开(公告)号：US20170077946A1

公开(公告)日：2017-03-16

申请号：US15121753

申请日：2015-02-13

Applicant: ams AG

Inventor： Thomas CHRISTEN ,  Thomas FROEHLICH ,  Andreas FITZI ,  Dusan PRELOG

IPC: H03M3/00

CPC classification number: H03M3/422 ,  H03M3/328 ,  H03M3/334 ,  H03M3/424 ,  H03M3/43 ,  H03M3/436 ,  H03M3/438 ,  H03M3/464

Abstract: A delta-sigma modulator (10) comprises a modulator loop (11) and a code generator (12). The modulator loop (11) comprises a loop filter (18). The code generator (12) is configured to generate a generator signal (BS) that is realized as an extended Barker code. The code generator (12) comprises a generator output (23) that is coupled to the loop filter (18).

Abstract translation: Δ-Σ调制器（10）包括调制器回路（11）和代码发生器（12）。 调制器环路（11）包括环路滤波器（18）。 代码生成器（12）被配置为生成作为扩展巴克码实现的发生器信号（BS）。 代码生成器（12）包括耦合到环路滤波器（18）的发生器输出（23）。

公开(公告)号：US20190115932A1

公开(公告)日：2019-04-18

申请号：US16083206

申请日：2017-04-05

Applicant: ams AG

Inventor： Thomas CHRISTEN ,  Colin STEELE ,  Thomas FROEHLICH

IPC: H03M3/00 ,  H03M1/12 ,  H03M1/68

CPC classification number: H03M3/49 ,  H03M1/1295 ,  H03M1/68 ,  H03M3/464

Abstract: A signal processing arrangement has a signal input for connecting a capacitive sensor. An amplifier circuit is coupled between the signal input and a feedback point. A loop filter is coupled downstream to the feedback point. A quantizer is connected downstream to the loop filter and provides a multi-bit output word. The multi-bit output word consists of one or more higher significance bits and one or more lower significance bits. A first feedback path is coupled between a quantizer and the feedback point for providing a first feedback signal to the feedback point being representative of the one or more lower significance bits. A second feedback path is coupled to the quantizer for providing a second feedback signal to the signal input being representative of the one or more higher significance bits.