Ihp Gmbh-innovations for High Performance Microelectronics/leibniz-institut Fur Innovative Mikroelektronik

Minsu Ko

Dietmar Kissinger

Pedro Rito

Iria Garcia Lopez

Mohamed Eissa

The invention relates to a gain-control stage () for generating gain-control signals (V, V) for controlling an external variable-gain amplifying unit (). The gain-control stage comprises a first () and a second differential amplifier unit () that receive, at a respective input interface () a reference voltage signal (V) and a variable gain-control voltage signal (V). The second differential amplifier unit is configured to provide, via a second output interface (), a control voltage signal (V) to a controllable first current source () of the first differential amplifier unit (). The first differential amplifier unit () is configured to provide, via a first output interface (), the first and the second gain-control signal (V, V) in dependence on the variable gain-control voltage signal (V), the reference voltage signal (V) and a first biasing current (I) that depends on the control voltage signal.

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Frankfurt-am-Main, Germany

Minsu Ko