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The paper presents a low phase noise LC oscillator with 1GHz tuning range suitable for fiber optic transceivers and SDH/SONET (STM16/OC48 applications. In order to reduce power supply pushing and to have a well controlled common-mode with temperature and process, a replica biasing circuit regulates the common-mode voltage. The guaranteed tuning range covered with process and temperature variations...
The paper presents a transimpedance amplifier (TIA) with automatic gain control for SDH/SONET (STM16/OC48) fibre optic applications. It features independent gain control, de-coupled from the bandwidth, wide dynamic range (5µA÷1.7mA) and high sensitivity (-24dBm). The equivalent input noise is typically 8pA/√Hz while the bandwidth of the amplifier is 1.9GHz (worst-case). The AGC regulates the differential...
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