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1. 发明申请

WO2019122377A1 OUTPUT COMMON MODE VOLTAGE REGULATED VARIABLE GAIN AMPLIFIER 审中-公开
公开(公告)号：WO2019122377A1
公开(公告)日：2019-06-27
申请号：PCT/EP2018/086694
申请日：2018-12-21
申请人： IHP GMBH - INNOVATIONS FOR HIGH PERFORMANCE MICROELECTRONICS / LEIBNIZ-INSTITUT FÜR INNOVATIVE MIKROELEKTRONIK
发明人： EISSA, Mohamed , KISSINGER, Dietmar , KO, Minsu
IPC分类号： H03G1/00 , H03F3/45 , H03F1/48 , H03F3/195 , H03F3/08
CPC分类号： H03G1/0023 , H03F1/486 , H03F3/087 , H03F3/195 , H03F3/45089 , H03F3/45475 , H03F3/45511 , H03F2200/294 , H03F2200/451 , H03F2203/45528 , H03G1/0029
摘要： A variable gain amplifier for amplifying a differential pair of input voltage signals, comprising a control input for receiving a differential pair of gain control voltage signals, a differential signal input for receiving a differential pair of input voltage signals, a current commuting stage receiving the pair of input voltage signals and the gain control voltage, and comprising a pair of cascode circuits for providing a differential pair of current components of respective current amounts that depend on the respective input voltage signal and on the received gain control voltage, a differential load stage receiving the current components and having respective resistive loads of a respective load resistance amount for generating a differential pair of output voltage signals having respective output voltage amounts that depend on the respective current amounts and on the load resistance amounts and a differential signal output having respective differential signal output nodes for providing the differential pair of output voltage signals, wherein the variable gain amplifier further comprises a common-mode bias servo stage that receives a reference voltage of a reference voltage amount and the differential pair of output voltage signals, and that comprises a pair of closed loop differential amplifiers, each configured to generate a respective DC bias voltage of a DC bias voltage amount depending on a difference between the respective output voltage amount and the reference voltage amount, and each feeding the respective generated DC bias voltage back to the respective differential signal output node.

2. 发明公开

EP3503389A1 OUTPUT COMMON MODE VOLTAGE REGULATED VARIABLE GAIN AMPLIFIER 有权
公开(公告)号：EP3503389A1
公开(公告)日：2019-06-26
申请号：EP17209770.1
申请日：2017-12-21
申请人： IHP GmbH - Innovations for High Performance Microelectronics / Leibniz-Institut für innovative Mikroelektronik
发明人： EISSA, Mohamed , KISSINGER, Dietmar , KO, Minsu
IPC分类号： H03G1/00 , H03F3/45
摘要： A variable gain amplifier for amplifying a differential pair of input voltage signals, comprising a control input for receiving a differential pair of gain control voltage signals, a differential signal input for receiving a differential pair of input voltage signals, a current commuting stage receiving the pair of input voltage signals and the gain control voltage, and comprising a pair of cascode circuits for providing a differential pair of current components of respective current amounts that depend on the respective input voltage signal and on the received gain control voltage, a differential load stage receiving the current components and having respective resistive loads of a respective load resistance amount for generating a differential pair of output voltage signals having respective output voltage amounts that depend on the respective current amounts and on the load resistance amounts and a differential signal output having respective differential signal output nodes for providing the differential pair of output voltage signals, wherein the variable gain amplifier further comprises a common-mode bias servo stage that receives a reference voltage of a reference voltage amount and the differential pair of output voltage signals, and that comprises a pair of closed loop differential amplifiers, each configured to generate a respective DC bias voltage of a DC bias voltage amount depending on a difference between the respective output voltage amount and the reference voltage amount, and each feeding the respective generated DC bias voltage back to the respective differential signal output node.

3. 发明公开

EP3672075A1 GAIN-CONTROL STAGE FOR A VARIABLE GAIN AMPLIFIER 有权
公开(公告)号：EP3672075A1
公开(公告)日：2020-06-24
申请号：EP19154834.6
申请日：2019-01-31
申请人： IHP GmbH - Innovations for High Performance Microelectronics / Leibniz-Institut für innovative Mikroelektronik
发明人： RITO, Pedro , GARCIA LOPEZ, Iria , KO, Minsu , KISSINGER, Dietmar
IPC分类号： H03G1/00 , H03F3/45 , H03G1/04 , H03G3/30
摘要： The invention relates to a gain-control stage (100) for generating gain-control signals (V c+ , V c- ) for controlling an external variable-gain amplifying unit (101). The gain-control stage comprises a first (102) and a second differential amplifier unit (112) that receive, at a respective input interface (104,114) a reference voltage signal (V Ref ) and a variable gain-control voltage signal (V GC ). The second differential amplifier unit is configured to provide, via a second output interface (120), a control voltage signal (Vi) to a controllable first current source (106) of the first differential amplifier unit (102). The first differential amplifier unit (102) is configured to provide, via a first output interface (110), the first and the second gain-control signal (V C+ , V C- ) in dependence on the variable gain-control voltage signal (V GC ), the reference voltage signal (V Ref ) and a first biasing current (I B1 ) that depends on the control voltage signal.

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