Abstract
In this paper, a transimpedance amplifier (TIA) based on floating active inductors (FAI) is presented. Compared with conventional TIAs, the proposed TIA has the advantages of a wider bandwidth, lower power dissipation, and smaller chip area. The schematics and characteristics of the FAI circuit are explained. Moreover, the proposed TIA employs the combination of capacitive degeneration, the broadband matching network, and the regulated cascode input stage to enhance the bandwidth and gain. This turns the TIA design into a fifth-order low pass filter with Butterworth response. The TIA is implemented using 0.18 
 
 
 μ
 
 
 m Rohm CMOS technology and consumes only 10.7 mW with a supply voltage of 1.8 V. When used with a 150 fF photodiode capacitance, it exhibits the following characteristics: gain of 41 dB
 
 
 Ω
 
 
 and −3 dB frequency of 10 GHz. This TIA occupies an area of 180 
 
 
 μ
 
 
 m × 118 
 
 
 μ
 
 
 m.
Highlights
With the rapid increase in the amount of data transmitted over telecommunications networks, interest in high speed optoelectronic devices and systems has increased
We propose a novel wideband transimpedance amplifier (TIA) using the Mahmoudi–Salama floating-type active inductor (AI), which is based on the gyrator-C topology
This proposed TIA based on floating AI has the advantages of a wide bandwidth of 10 GHz and a transimpedance gain of 41 dBΩ, it has the merits of a smaller chip area and lower power dissipation compared with the conventional TIA, based on a spiral inductor [8]
Summary
With the rapid increase in the amount of data transmitted over telecommunications networks, interest in high speed optoelectronic devices and systems has increased. A bandwidth enhancement method based on the interaction of a matching LC network, a regulated cascode (RGC) input stage, and a capacitive degeneration stage can be used to enhance the bandwidth and provide efficient noise reduction This turns the TIA into a fifth-order Butterworth low pass filter. We propose a novel wideband TIA using the Mahmoudi–Salama floating-type AI, which is based on the gyrator-C topology This proposed TIA based on floating AI has the advantages of a wide bandwidth of 10 GHz and a transimpedance gain of 41 dBΩ, it has the merits of a smaller chip area and lower power dissipation compared with the conventional TIA, based on a spiral inductor [8].
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