Enhanced bandwidth, high gain, low noise transimpedance amplifier for asynchronous optical sampling systems

2019 ◽  
Vol 90 (6) ◽  
pp. 063103 ◽  
Author(s):  
Xue Yang ◽  
Bo Su ◽  
Yaxiong Wu ◽  
Hongfei Zhang ◽  
David R. Jones
Keyword(s):  
High Gain ◽  
Low Noise ◽  
Transimpedance Amplifier ◽  
Optical Sampling ◽  
Sampling Systems

scholarly journals The Isotopx NGX and the ATONA Faraday Amplifiers

2020 ◽  
Author(s):  
Stephen E. Cox ◽  
Sidney R. Hemming ◽  
Damian Tootell
Keyword(s):  
Mass Spectrometer ◽  
Dynamic Range ◽  
Noble Gas ◽  
High Dynamic Range ◽  
High Gain ◽  
Low Noise ◽  
Transimpedance Amplifier ◽  
Noise Floor ◽  
Baseline Noise ◽  
Noise Measurements

Abstract. We installed the new Isotopx ATONA Faraday cup detector amplifiers on an Isotopx NGX mass spectrometer at Lamont-Doherty Earth Observatory in early 2018. The ATONA is a capacitive transimpedance amplifier, which differs from the traditional resistive transimpedance amplifier used on most Faraday detectors for mass spectrometry. Instead of a high gain resistor, a capacitor is used to accumulate and measure charge. The advantages of this architecture are a very low noise floor, rapid response time, stable baselines, and very high dynamic range. We show baseline noise measurements and measurements of argon from air and cocktail gas standards to demonstrate the capabilities of these amplifiers. The ATONA exhibits a noise floor better than a traditional 1013 Ω amplifier in normal noble gas mass spectrometer usage, superior gain and baseline stability, and an unrivaled dynamic range that makes it practical to measure beams ranging in size from below 10−16 A to above 10−9 A using a single amplifier.

π-PEAKING SHUNT-FEEDBACK TRANSIMPEDANCE AMPLIFIER WITH BANDWIDTH ENHANCEMENT

2013 ◽  
Vol 22 (09) ◽  
pp. 1340009
Author(s):  
PANUS SINSOONTORNPONG ◽  
APISAK WORAPISHET
Keyword(s):  
Circuit Complexity ◽  
High Gain ◽  
Low Noise ◽  
Transimpedance Amplifier ◽  
Noise Performance ◽  
Bandwidth Enhancement ◽  
High Bandwidth ◽  
Practical Performance ◽  
Cmos Implementation ◽  
Silicon Cmos

This paper presents the development of a bandwidth enhancement technique for a resistive shunt-feedback transimpedance amplifier (TIA). The technique relies upon a π-peaking network realization using the shunt-feedback TIA as a part of the network in order to achieve a high bandwidth while maintaining a low noise performance. The output is obtained by making use of subsequent amplifier stages with the non-uniform constant-k output network for simultaneously high gain and bandwidth. Practical performance verification was provided via the designs and simulations of two π-peaking TIAs in a silicon CMOS implementation and a discrete HJFET implementation. Simulated results clearly indicates superior bandwidth of the π-peaking TIA over the conventional shunt-feedback TIA at practically no cost to circuit complexity and power consumption.

scholarly journals High-Performance BiCMOS Transimpedance Amplifiers for Fiber-Optic Receivers

2007 ◽  
Vol 4 (1) ◽  
pp. 69
Author(s):  
F. Touati ◽  
M. Loulou
Keyword(s):  
Low Power ◽  
Detailed Analysis ◽  
Process Parameters ◽  
High Performance ◽  
Fiber Optic ◽  
High Gain ◽  
Low Noise ◽  
Transimpedance Amplifier ◽  
Transimpedance Amplifiers ◽  
Simulated Performance

High gain, wide bandwidth, low noise, and low-power transimpedance amplifiers based on new BiCMOS common- base topologies have been designed for fiber-optic receivers. In particular a design approach, hereafter called "A more- FET approach", added a new dimension to effectively optimize performance tradeoffs inherent in such circuits. Using conventional silicon 0.8 μm process parameters, simulated performance features of a total-FET transimpedance amplifier operating at 7.2 GHz, which is close to the technology fT of 12 GHz, are presented. The results are superior to those of similar recent designs and comparable to IC designs using GaAs technology. A detailed analysis of the design architecture, including a discussion on the effects of moving toward more FET-based designs is presented. 

scholarly journals The Isotopx NGX and ATONA Faraday amplifiers

Geochronology ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 231-243
Author(s):  
Stephen E. Cox ◽  
Sidney R. Hemming ◽  
Damian Tootell
Keyword(s):  
Mass Spectrometer ◽  
Dynamic Range ◽  
Noble Gas ◽  
High Dynamic Range ◽  
High Gain ◽  
Low Noise ◽  
Transimpedance Amplifier ◽  
Noise Floor ◽  
Baseline Noise ◽  
Noise Measurements

Abstract. We installed the new Isotopx ATONA Faraday cup detector amplifiers on an Isotopx NGX mass spectrometer at Lamont-Doherty Earth Observatory in early 2018. The ATONA is a capacitive transimpedance amplifier, which differs from the traditional resistive transimpedance amplifier used on most Faraday detectors for mass spectrometry. Instead of a high-gain resistor, a capacitor is used to accumulate and measure charge. The advantages of this architecture are a very low noise floor, rapid response time, stable baselines, and very high dynamic range. We show baseline noise measurements and measurements of argon from air and cocktail gas standards to demonstrate the capabilities of these amplifiers. The ATONA exhibits a noise floor better than a traditional 1013 Ω amplifier in normal noble gas mass spectrometer usage, superior gain and baseline stability, and an unrivaled dynamic range that makes it practical to measure beams ranging in size from below 10−16 to above 10−9 A using a single amplifier.

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