Designing and Simulating of an Inductor less, Low-Power and Low-Noise Trans-Impedance Amplifier Based on Active Feedback for 10 Gbps Applications Using the Ratio of Trans-Conductance to Drain Current Methodology

Subject Areas : Low-power devices

Bahram Jalil ¹ , Somayeh Kazemi ^{2 *} , Mehdi Dolatshahi ³

1 - Department of Electrical Engineering- Najafabad Branch, Islamic Azad University, Najafabad, Iran
2 - Department of Electrical Engineering- Najafabad Branch, Islamic Azad University, Najafabad, Iran
3 - Department of Electrical Engineering- Najafabad Branch, Islamic Azad University, Najafabad, Iran

Received: 2023-10-29 Accepted : 2024-08-12 Published : 2025-12-22

Keywords: Active feedback technique, inductive peaking technique, low noise, low power, trans-conductance to drain current technique, trans-impedance amplifier,

Abstract :

This paper presents a new circuit design for a trans-impedance amplifier (TIA) with excellent power efficiency, low noise, and a 10 Gbps data rate. In this circuit, we have attempted to achieve a desirable level for each of these parameters by combining and optimizing multiple design techniques. In this structure, to increase bandwidth, reduce power consumption, and decrease noise, we have used a combination of active feedback, feedforward path addition, active feedback, and the inductive peaking technique and the ratio of trans-conductance to drain current technique (g_m/I_D). To verify the performance of the proposed TIA circuit, HSPICE simulation was performed using 90 nm technology. The simulation results show a gain of 53.01 dBΩ, a bandwidth of 7.05 GHz, and an input-referred noise of 21.06­pA/√Hz. The power consumption of the circuit with a 1.1 V power supply is only 1.3 mW. The results indicate the better efficiency of the proposed circuit compared to previous works.

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