A method of detecting a burst in a transmitted data stream and circuit arrangement for performing the method

The invention provides a method of detecting a burst (100a) in a transmitted data stream (102), wherein the transmitted data stream is received in a receiving unit (101), a the transmitted data stream (102) corresponding electrical signal (102a) from the receiving unit ( 101) the electrical signal output (by the receiving unit 101) (102a) is converted into an amplifier output signal (102b) with a transimpedance amplifier (103) is output, a first mean value (M1) of the amplifier output signal (102b) with a first averaging time constant (T1) is formed in a first averaging unit (119-1), a second mean value (M2) of the amplifier output signal (102b) with a second averaging time constant (T2) in a second averaging unit (119-2) is formed, a comparison of the first mean value (M1) to the second mean value (M2) of the amplifier output signal (102b) is carried out by means of a comparison unit (120) wi rd, and at least one amplifier time constant of the transimpedance amplifier (103) depending on the comparison carried out by means of a switching signal (114) is switched.