Circuit arrangement for amplifying an electrical signal

Details Circuit arrangement for amplifying an electrical signal Circuit arrangement for amplifying an electrical signal

H - Electricity

03

F

H03F 1/34 (2006.01) H03F 1/42 (2006.01) H03F 1/48 (2006.01) H03F 3/08 (2006.01)

Patent

CA 2066282

Abstract Circuit Arrangement for Amplifying an Electrical Signal The invention relates to a circuit arrangement for amplifying a signal used in optical data transmissions. To improve the transmission behavior of the amplifier for the output signal of a photodiode, particularly a PIN diode, a transistor amplifier configured as current amplifier is provided with a current shunt feedback connection by way of a negative feedback network including capacitive voltage dividers. By suitably dimensioning the capacitive voltage divider formed of a transmission voltage divider (C1, R1, C2, R2) and a loop voltage divider (C, C1, R1), sufficient gain with an adequate signal to noise ratio is ensured also for high frequencies. (Figure 2)

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