Low noise current-mode CMOS transimpedance amplifier for giga-bit optical communication

2002 ◽  
Author(s):  
S.M. Park ◽  
C. Toumazou
Keyword(s):  
Optical Communication ◽  
Current Mode ◽  
Low Noise ◽  
Transimpedance Amplifier ◽  
Noise Current

On the design of low-noise current-mode optical preamplifiers

1992 ◽  
Vol 2 (3) ◽  
pp. 179-195 ◽  
Author(s):  
Tongtod Vanisri ◽  
Chris Toumazou
Keyword(s):  
Current Mode ◽  
Low Noise ◽  
Noise Current

scholarly journals A 79 dBΩ 1.2 GHz Low-Noise Single-Ended CMOS Transimpedance Amplifier for High-Performance OTDR Applications

2019 ◽  
Vol 15 (2) ◽  
pp. 113-118
Author(s):  
Agata Romanova ◽  
Vaidotas Barzdenas
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Low Noise ◽  
Cmos Process ◽  
Transimpedance Amplifier ◽  
Output Buffer ◽  
Noise Current ◽  
Resistive Feedback ◽  
Optical Time ◽  
And Performance

AbstractThe work reports on the design and performance of a low-noise low-cost CMOS transimpedance amplifier (TIA). The proposed circuit shall be employed in optical time-domain reflectometers and is implemented using an affordable 0.18 µm 1.8 V CMOS process. The approach preserves the benefits of a classical feedback structure while addressing the noise problem of conventional feed-forward and resistive feedback architectures via the usage of noise-efficient capacitive feedback. Circuit-level modifications are proposed to mitigate the voltage headroom and DC current issues. The suggested design achieves a total gain of 82 dBΩ (79 dBΩ after the output buffer) within the bandwidth of 1.2 GHz while operating with a total input capacitance of 0.7 pF. The simulated average input-referred noise current density is below 1.8 pA/sqrt(Hz) with the power consumption of the complete amplifier including the output buffer being 21 mW.

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