High Speed Amplifiers

Browse by Tags

High Speed Amplifiers

Welcome to the High Speed Amplifiers Section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "New Post".

Tags
You have subscribed to this tag. To view or manage your tag subscriptions, click here.   Close
You have unsubscribed from this tag. To view or manage your tag subscriptions, click here.   Close
You are currently viewing:
transimpedance amplifier
Related Posts

  • Forum Post: Re: Current feedback amplifier for high speed photodiode

    Jim Karki
    I have not seen a CFB (current feedback) amplifier like the OPA695 used for TIA (transimpedance amplifier) design. The typical compensation scheme where you put a capacitor in the feedback will be a problem for the CFB. The OPA847 is a VFB (voltage feedback) amplifier that works for very fast TIA design...
    on Sep 11, 2009

  • Forum Post: Transimpedance Considerations for High Speed Amplifiers - Application Report SBOA122

    Karen
    Designing for high-resolution detection circuits using photodiodes? See the new Application Report " Transimpedance Considerations for High-Speed Amplifers " by Xavier Ramus.
    on Dec 3, 2009

  • Forum Post: Design topology to bootstrap a photo-diode

    Wilson Teo
    Hi, One limition consideration on the bandwidth of the Transimpedance Amplifier is the Diode capacitance. As I am interested to sampling different types of diodes at high bandwidth, the diode capacitance of all these diodes are all different. Can TI recommend design topology to bootstrap the...
    on Dec 17, 2009

  • Forum Post: transimpedence amplifier

    valmik patel
    I am new to the field of analog design. I am working on a project in which we are designing a data acquisition system for an array of 4x4 photodiodes. Initially we plan to use individual photodiodes from OSI optoelectronics(HR040) to test the concept. I was thinking about using OPA656 as a transimpedence...
    on Mar 2, 2010

  • Forum Post: Re: transimpedence amplifier

    valmik patel
    Thank you for your help Xavier The photodiodes we are using have a capacitance of 4.9pF and a dark current of about 2-2.5nA. The maximum output we get from the photodiode is about 350nA. I looked at your suggestions and i think the OPA846 should work well for us. I was thinking about using ADS931...
    on Mar 5, 2010

  • Forum Post: OPA657 spice macro model behavior

    Gaston Arrigo
    Hello, I need some help with the behavior of the spice model for OPA657 opamp. I'm simulating a transimpedance amplifier with the OPA657 but I found a diference in the behavior depending on which revision I use. I tested with the following two macro models (I transcribe only Headers of ...
    on Sep 10, 2010

  • Forum Post: Noise in transimpendance amplifier with OPA847

    Luis M Brugarolas
    I am designing a Transimpendance Amplifier for a photodiode with OPA847, which has excelent bandwidth and noise performance. I have found that noise performance is not as expected. Then, I decided to make a minimalist approach: mount just feedback resistor and make noise measurements with it. The...
    on Feb 16, 2011

  • Forum Post: APD transimpedance amplifier

    Joel Yello
    Hello, I am looking to design a transimpedance amplifier for use with an avalanche photodiode in a battery powered application and was hoping to get some assistance. I am looking to detect pulsed light in the range of 800nm. I understand that a high speed op-amp would be required due to the nature...
    on Apr 9, 2011

  • Forum Post: Re: Photodiode TIA - Equivalent Input Noise - OPA847

    Neil Albaugh
    Albert; "I am developing a Transimpedance Amplifier based on the OPA847 for very small currents originating from a photodiode...." Please look at the OPA847 input bias current spec; it is about 42 uA maximum! This is going to make a VERY poor transimpedance amplifier for small photocurrents...
    on May 9, 2011

  • Forum Post: Re: APD transimpedance amplifier

    Neil Albaugh
    Joel; I've attached a circuit for a transimpedance amplifier with an OPA657 and another but similar APD. The laser pulse should be short and have a fast rise time so you can get good range resolution and keep thr duty cycle of the laser low. If you know the shape of your laser pulse (a short laser...
    on May 15, 2011

  • Forum Post: Re: APD transimpedance amplifier

    Neil Albaugh
    Joel; If you try the circuit that I attached in my last post, I think it will work better than what you are attempting. A non-inverting amplifier following an APD will have poor SNR compared to a good transimpedance amplifier. You still have not said what your pulse width is, so I can't be...
    on Jun 10, 2011

  • Forum Post: photodiode transimpedance for quick pulse (20ns) with high DC background light

    Pierre-Yves Boulanger
    Hello, I'm building a prototype with a single reverse bias (100V) photodiode (photoconductive mode) with a capacitance of 15pF. I'd like to measure the amplitude (by sampling at around 100Mhz with 10bit ADC) laser pulse of 20ns of length with a quite high DC level (might be up to several mA...
    on Jun 20, 2011

  • Forum Post: Differential wideband DAC output with THS4509

    Luis M Brugarolas
    (Please visit the site to view this file) I have designed a differential wideband transimpedance amplifier for a high speed DAC (DAC5681). This DAC has an output compliance range of AVDD+-0.5 V. I have chosen a transimpedance architecture as circuit has to operate from DC to 300 MHz. See schematic...
    on Sep 15, 2011

  • Forum Post: Low noise Transimpedance amplifier for MEMS Gyroscope for Capacitive Sensing

    Sandeep Kumar
    on Oct 10, 2011

  • Forum Post: Transimpedance amp with OPA355

    Thomas 11
    Dear All, The transimpedance amp is designed with OPA355 as shown below. The photo detector is receiving approximately 50nA reflection signal from the laser. Then the output voltage at VF1 is lower and lower when I increase the modulating frequency such as 200kHz, 300kHz etc . When it is...
    on Nov 7, 2011

  • Forum Post: OPA657 Photodiode Transconductance Amplifier problem

    Muhammad Talha
    Hello All, I am trying to simulate a circuit but somehow i am not getting the response that is supposed to come out. I am attaching the circuit file herewith. The frequency response of the circuit should be like this. Instead I am getting a flat line. I am new to high speed...
    on Mar 19, 2012

All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | mobile m.ti.com (Mobile Version)

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2013 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use