Precision Amplifiers

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Precision Amplifiers

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amplifer recommendations
Related Posts

  • Forum Post: Re: INA326 ECG design questions and problems

    Matt Hann
    Xijun, The OPA333 requires a minimum supply difference of 1.8V. Also, it does not make sense to me that you would be able to input a voltage of 1V to a buffer whose positive supply is only .553V as the amplifier would saturate before hitting your target output. Indeed, this is what I believe is happening;...
    on Feb 22, 2010

  • Forum Post: OPA 381 - TRANSIMPEDANCE

    supercuate
    Hi I am using the TINA simulation for test Hydrogen Sulphide sensor. http://www.citytech.com/PDF-Datasheets/4h.pdf (Please visit the site to view this file) current - to -voltage (I-V) converter Does anyone know how can I sensing is ok?
    on Nov 11, 2010

  • Forum Post: Smaller instrumentation amp with the same noise performance as the INA103

    Andrew Madsen
    I'm working on a a design that requires very low noise. The INA103 works very well in my application, but its SOIC-16 package is much larger than I would like. I'm wondering if there's another available instrumentation amp with a noise figure around 1nV/sqrt(Hz) that comes in a smaller surface...
    on Dec 16, 2010

  • Forum Post: Good OpAmp choice for TIA in UI panel?

    Tom Schroetter
    Hello TI community! I am looking for a good opamp (single supply) in a transimpedance amplifier application and was hoping to get some recommendations from the experienced engineers here. We are developing a user interface panel that uses lot's of photodiodes to detect infrared light (pulsed...
    on Jun 5, 2011

  • Forum Post: Amplifier for chemical oscillator

    Sam Kenny
    Hi, I'm a chemist at the University of Minnesota studying oscillating chemical reactions. I'm using a Pt electrode to electrically monitor the oscillations, and a Vernier voltage probe to record the oscillator voltage over time. The chemical cell produces roughly a sine wave with a period of...
    on Aug 2, 2011

  • Forum Post: OPA350,with highe supply voltage?

    eli
    Looking for similar device like OPA350,but with higher supply voltage,from 12V and above
    on Sep 12, 2011

  • Forum Post: high voltage high current OPAMP

    giulia di capua
    Hi all, I'm searching for an opamp permitting me to have a square waveform with 300kHz, +/-50V, 2A for testing off-line a power transformer for switching power supply. At the moment the best solution seems to adopt OP AMP 549 with +/-30V, UGB 0.9GHz. Any suggestion? Thank you, ...
    on Nov 4, 2011

  • Forum Post: Problems with ISO124

    Ivan P
    Hi, I'm working with an ISO124 device. The ISO is used for sensing a dc-link voltage (up to 600V) in a 5kW photovoltaic inverter. The schematic is as follows: The ISO apprears to work fine, but when the IGBTs of the converter switches, then fails. In the next figure we can see the input...
    on May 18, 2011

  • Forum Post: Re: Noise pick up and controller

    karthick balu
    Thank you .. Mr. Collin Wells p1.0 is comparator reference.... p1.1 is comparator input from amplifier circuit... p1.2 is comparator output and which is connected to the other port.(p1.3).. and this terminal is connected to ground through capacitor(10nf)... i tried it with pcb...
    on Feb 11, 2012

  • Forum Post: Noise pick up and controller

    karthick balu
    Noise pick up and controller hi, for our project msp430g2211 controller is used.. in that noise is picked up in input to the comparator... for that we used capacitor across the controller port pin with respect to ground... noise is arrested..... but putting of capacitor to the port pin takes high...
    on Feb 10, 2012

  • Forum Post: Re: Problem with OPA2320

    Yogesh Palkar
    Hello Sir, No I dont have a Gain/Phase analyzer. The schematic is very simple. OPA2320 is fed with an input to the positive pin from a signal generator. The negative pin and the output are shorted. The output is given to a DSO. The positive 2.5V and the negative 2.5V supplies are bypassed using...
    on Mar 20, 2012

  • Forum Post: IMPROVE REPLACEMENT TO OP295

    eli
    Looking for imprive version of OP295,with lower offset (50-100uv max) Vcc=+-12v (low speed). (I foundOPA2227/OPA2234/OPA2277/OPA2277 but these are old devices)
    on Mar 20, 2012

  • Forum Post: OP-AMP

    eli
    Looking for single/dual amp. with low offset of 50uv,+/-5V,low noise, and gain=100,BW=10K
    on Mar 29, 2012

  • Forum Post: Would you comment about using epoxy filler on OPA2348?

    AK
    Our customer will use epoxy for waterproofing for their application. When the OPA2348 covered by epoxy, does the OPA2348 work nomally? Device : OPA2348AIDCNR Epoxide manufacturer : Three Bond Base compound : 2001 Curing agent : 2105C *Blend ratio Base compound : Curing agent = 2 : 1
    on Nov 6, 2012

  • Forum Post: RE: Measurement of currents from 1nA to 1mA

    Diego Fabila
    Hi Bruce, I have been probing the amplifier log104, but I have a question what is the input impedance of the circuit?. I checked the datasheet but I can´t find it. The circuit which I have been checking is shown here.
    on Nov 12, 2012

  • Forum Post: RE: the voltage offset OPA2376 for the photodiode ,the current is from 8.7nA to 600uA

    zumao xu
    hi : thanks very much for your replay ,my circuit is just nomally I-V conver circuit ,no bias .votange , the amp is OPA2376 , the sensor is S2386 ,made by hamamatsu. i designed the circuit refer to the website: http://www.jensign.com/transimpedance/index.html . and i also added one the capacitance...
    on Nov 23, 2012

  • Forum Post: Help with amplifier oscillation

    Kevin Mason
    HI, I am relatively new to opamp circuits, but I have designed one that does what I want it to do. The problem is that I am getting a slight oscillation - more like a ripple. There are two amplifiers in the circuit - an INA117 which feeds the non-inverting input of an INA114. I am using a voltage divider...
    on Nov 28, 2012

  • Forum Post: Divider IC frequency response in normalizing amplifier

    Matt Shindel
    Hello, I have built a normalizing amplifier using an AD734 IC configured in standard divider mode on a bread board. According to the device's data sheet, it has a bandwidth of ~ 1 MHz for denominator voltages in the range of 1-10 V. However, I am only achieving a bandwidth of ~ 1 kHz as shown in...
    on Dec 6, 2012

  • Forum Post: TLC272 replacement

    Giorgos Nikolaidis
    hi, i am new here! i am using a tlc272. the VDD is 5V and the VOH (High-level output voltage) is 3.8V. we need to replace the TLC272 with an other amplifier to have VOH around 4.5V it is a simple project with no special requarments.
    on Dec 11, 2012

  • Forum Post: LMH6629: Ultra low-noise amplifier and variable gain.

    Efrain Ovalle
    I'm working on an application where the goal is to amplify a signal which is not known exactly but is estimated frequency is between 100KHz and 20MHz. Similarly there is no record of what may be the amplitude is estimated less than 100nV to be expected to be so small that it is undetectable (pV-fV...
    on Jan 22, 2013

  • Forum Post: Need help to choose Amplifier with voltage reference

    Dinu Paulson
    Hi , I am searching for general purpose opamp with internal(1V to 1.5V) or external(=<2.5V) voltage reference. Could you please refer some parts. It could be single,dual or quad, dual supply +-15V
    on Jan 28, 2013

  • Forum Post: Error in detection temperature with INA826

    Miao Qian
    Dear sir/madam, I designed a temperature detection circuit with INA826. The components on the circuit are selected by RTD_Linearization_v7.xls downloaded from TI.com. When I connected Pt100 to the circuit about 150ohm at 140 degree, the voltage output from the circuit is only 2.67*(3.3/(10+3.3))V rather...
    on Jan 30, 2013

  • Forum Post: RE: Design of non contact ECG sensor

    tursun wali
    Hai Eldos , Pete and Usama, I am Wali, a Doctor student in Malaysia. I want to make Non-contact ECG sensor for my research. From Literature i found that it can be done with following components: Start from input side- 1. De-electrode (plastic for example)should be pasted on antenna. 2. Aluminium...
    on Feb 6, 2013

  • Forum Post: oscillation in a low bandwidth(300Hz) trans impedance circuit

    qi wang1
    Hey, I'm now working on a trans impedance circuit using OPA4131(please see the following schematic), the bandwidth is set pretty low @ 330Hz, but the circuit oscillates (~3MHz) with a 10 meter long input cable (just a cable no sensor attached) which was measured having around 500pF capacitance...
    on Feb 6, 2013

  • Forum Post: Amplifier Product Help

    Erika Herge
    I am looking for a differential amplifier with a midband gain of 100dB, an input impedance of atleast 100MegaOhms and an output impedance of less than 50Ohms. I will be using +/- 12V power supply. Does anyone have suggestions? Thank you
    on May 2, 2013
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