Abstract: The photocurrent generated by the photodetector through optoelectronic conversion of the incoming light must be conditioned to comply with the requirements of the clock and data recovery block. The CDR performs retiming and synchronization of the received data stream, but requires the input signal amplitude to be constant and larger than its input sensitivity. For this purpose, the photocurrent is converted to the voltage domain in the transimpedance amplifier (TIA). This current-voltage (I-V) conversion intrinsically provides signal amplification by the gain Z TIA , commonly called transimpedance gain. Additional gain is then implemented in the limiting amplifier (LA) in the next step of the conditioning process.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 4
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