High-Gain, Low-Noise, and Wide Bandwidth CMOS Transimpedance Amplifier Design for Next-Generation Optical Communication Systems

The Transimpedance Amplifier (TIA) configuration using CMOS technology is pivotal in modern analogue circuit design, especially in high-speed and low-noise applications.This proposed configuration integrates PMOS and NMOS transistors to improve bandwidth, gain, and power efficiency.In the designed CMOS Transimpedance Amplifier (TIA), the circuit uses complementary transistor pairs to drive the output.The main advantage of this configuration is its ability to provide low output impedance while maintaining high bandwidth.The design arrangement reduces distortion and enhances linearity by supporting positive and negative fluctuations well.This is critical in applications such as optical receivers, where high-speed signal processing is required.The gain of the Transimpedance Amplifier is determined by the feedback resistor connected between the output and the inverting input of the amplifier, and by operating the proposed system, a gain of 64 dB is obtained.The Transimpedance gain is adjusted to balance speed and noise performance.The gain-bandwidth quotient (GBP) of 10 GHz is a critical parameter for typical CMOS TIA designs.The gain-bandwidth quotient reflects the ability of an amplifier to maintain high gain while providing a wide frequency response.TIAs designed for high-speed applications often target GBP values in the multi-GHz range, ensuring the amplifier can handle high-frequency signals with minimal attenuation.The proposed system is designed and simulated in LT-Spice.