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1.发明授权Method of adding a dither signal in output to the last integrator of a sigma-delta converter and relative sigma-delta converter 有权一种用于在最后Integrateurs的输出的Σ-Δ转换器和相关联的换能器增加的抖动信号的方法
公开(公告)号：EP1727287B1
公开(公告)日：2015-07-15
申请号：EP05425374.5
申请日：2005-05-27
Applicant: STMicroelectronics Srl
Inventor： Pinna, Carlo , Pernici, Sergio , Nagari, Angelo
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2.发明公开Integrated programmable gain amplifier circuit and system including said circuit 审中-公开带增益和progammierbarer系统集成放大器包含放大器
公开(公告)号：EP2197109A1
公开(公告)日：2010-06-16
申请号：EP09179092.3
申请日：2009-12-14
Applicant: STMicroelectronics Srl
Inventor： Nicollini, Germano , Nagari, Angelo
CPC classification number: H03G1/0088 , H03F3/45475 , H03F2203/45526 , H03F2203/45594 , H03H11/126 , H03H11/1291
Abstract: An integrated programmable gain amplifier circuit (22), for receiving, at input, an analog signal (S MC ), including an operational amplifier (33) and a gain setup network (NRC IN , NRC F ) including resistive elements (R 1 -R 4 , Rf 1 -Rf n ) and selection elements (S 1 -S n ), which may be controlled in order to setup the gain of said amplifier circuit (22), is described.
The gain setup network (NRC IN , NRC F ) further includes capacitive elements (C1-C3, Cf 1 -Cf n ), for defining, together with the resistive elements (R 1 -R 4 ) and the operational amplifier (33), an anti-aliasing filter of the active RC type.Abstract translation: 用于接收，在输入到模拟信号（S MC），包括运算放大器（33）和一个增益setupnetwork（NRC IN，NRC F）包括电阻元件（R 1集成的可编程增益放大器电路（22） - R 4，RF 1射频S）和选择元件（S 1 -S n），其可以以被控制，以设定所述放大电路的增益（22）进行说明。 增益setupnetwork（NRC IN，NRC F）还包括：电容元件（C1-C3，CF 1为-CF n）时，为限定，与所述电阻元件（R 1 -R 4）和运算放大器（33）一起， 的抗混叠的有源RC类型的过滤器。
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