Patent ID: 7242871
Filing Date: 2007-07-10
Classification: H04B

Abstract:
1. An optical receiver comprising: a photosensitive device; and a plurality of series-connected amplifier stages coupled to the photosensitive device; wherein a first of the amplifier stages includes an amplifier series-connected to an attenuator, and a second of the amplifier stages includes: a second amplifier; a second attenuator; and a switch coupling either one of the second amplifier or the second attenuator between the first amplifier stage and an output terminal of the optical receiver wherein the switch includes two elements, and each element includes: a control terminal; a common terminal; and two current handling terminals respectively connected to the second amplifier and the second attenuator; two diodes respectively connected between the common terminal and the two current handling terminals; and a control device having its control electrode connected to the control terminal of the switch element and having an output terminal connected to one of the diodes.