RF Transimpedance Amplifier for CATV Applications over PON
نویسندگان
چکیده
In this work, we present a fully differential transimpedance amplifier (TIA) with controllable transimpedance for use in RF overlay downstream communication systems. The transimpedance amplifier has been designed in a standard 180-nm CMOS technology and it is intended for 47 MHz to 870 MHz subcarrier multiplexed RF signals. It performs a 18 dBΩ transimpedance gain control range for extended optical input range from -6 dBm up to +2 dBm.
منابع مشابه
Analyzing the Effect Adding an Active Feedback Network with an Inductive behavior to a Common-Gate Topology as a Transimpedance Amplifier for Low-Power and Wide-Band Communication Applications
Common Gate (CG) topologies are commonly used as the first stage in Transimpedance Amplifiers (TIA), due to their low input resistance. But, this structure is not solely used as a TIA and comes with other topologies such as differential amplifiers or negative resistances and capacitances. This paper deals with analyzing the effect of adding an active feedback network to a common gate topology...
متن کاملA Study on Transimpedance Amplifier in 0.35 μm CMOS Technology
This paper presents a design of the transimpedance amplifier using 0.35μm CMOS technology. In the proposed transimpedance amplifier, feedback resistor RF of conventional transimpedance amplifier has been replaced by NMOS transistor as an active feedback resistor. This circuit operates at 3.3V power supply voltage and for a photocurrent of 0.5μA.The proposed transimpedance amplifier having low n...
متن کاملAmplifying High-Impedance Sensors – Photodiode Example
Figure 1 shows the equivalent circuit of a transimpedance amplifier and a high-impedance source. IS represents the output current of the source. CS is the sum of the source’s output capacitance and the op amp’s input capacitance. RF, with the help of the op amp, converts IS to a voltage. At low frequencies, the op amp’s inverting input is forced to be at ground potential and IS must flow throug...
متن کاملBiCMOS variable gain transimpedance amplifier for automotive applications
A new BiCMOS variable gain transimpedance amplifier with a large area integrated photodiode for automotive applications is presented. Through careful control of the input pole position and the frequency response of the core amplifier, the bandwidth of the transimpedance amplifier varies from 112 to 300 MHz when its gain changes from 14.2 kV to 400 V. The proposed circuit configuration maintains...
متن کاملBurst-mode Receiver ICs Design for 1.25Gb/s Passive Optical Network
This thesis provides a study on 1.25Gb/s burst-mode receiver design. Firstly, the concept of Passive Optical Network (PON) and the challenges associated with the Optical Line Terminal (OLT) receiver design is addressed in Chapter 1. The fundamental of building blocks in OLT receiver module, including the transimpedance amplifier (TIA) and the limiting amplifier (LA), is provided in Chapter 2. B...
متن کامل