• LTC6240 sensitive to temperature and out of spec input dynamic range

    We have used the LTC6240HVHS5#PBF variant of the LTC6240 in a circuit that measures voltage, with circuitry that changes the gain of the opamp depending on the circumstances. However, some of the units exhibit faulty behavior, including railed output far…

  • RE: how to design loopfilter of adf4401a

    Hi little_rabbit:  I'm not sure what filter parameters you're looking for, nor what the ADF4401A wants to see.  My favorite filter is the 3rd order Butterworth shown on the back page of the LTC6240 data sheet.  That's a 150kHz (-3dB) filter, but…

  • RE: Tunable notch Filters for audio frequency

    Yes, that's why my question. But how to redesign the circuit and also I should have a single supply for the LTC6240

  • RE: Operational Amplifier for a sensor with picoAmps signal.

    Hi Fyle,

    I found some amplifiers that may interest you. You may check them as a start (see datasheet links below): 
    AD8608 , LTC6087, and LTC6240 .
    You may also want to check this circuit as reference: CN0350 .

    I hope these will help you on your circuit design.
    If…

  • RE: High order low pass filter on the output of LTC1968?

    Hi shurp:  Yes the LTC1966/7/8 family is switched-cap so there is output noise and glitching.  You can increase the output C_ave as much as you want (and don't ever omit it).  Also make sure the layout goes onto and off the C_ave; don't connect C_ave…

  • RE: LTM8042 ICTL MAX current

    What company do you work for and what's estimated annual usage of LTM8042?

    The 20kΩ resitor mentioned by Adam Toth provides high enough impedance of the CTL pin. You can drive CTL pin directly, then, by applying voltage between approximately 1V and…

  • LTC6240HV

    For a research project at work we opened LTC6240HV Operational Amplifiers to expose the die, inject disturbances and analyse the output signal.
    My bachelors thesis is about a more in depth analysis of the measured output signals. For a proper understanding…

  • RE: IC compatibility

    You can use my parametric chooser at http://www.sevensoftltd.com/OpAmp.aspx to look for suitable candidates

    Suitable devices are the OPA376, LMP7701 and LTC6240 as they are 3V parts that all exceed the AD8663 except in terms of current requirements.

  • TAGS LIST: Amplifiers

    AD600
    AD602
    AD603
    AD604
    AD605
    AD8264
    AD8330
    AD8331
    AD8332
    AD8334
    AD8335
    AD8336
    AD8337
    AD8338
    ADL5246
    ADL5330
    ADL5331
    LTC6412
    HMC6187G
    HMC997G
    HMC996
    HMC694G
    AD8368
    AD8351
    AD8367
    AD75071
    AD552…
  • 微信爆款系列丨您真的能通过运算放大器实现ppm精度吗?

    工业和医疗设计推动产品的精度和速度日益提高。模拟集成电路行业总体能够跟上速度的发展要求,但在精度要求上却有所不足。许多系统都竞相迈入1 ppm精度之列,特别是如今,1 ppm 的线性ADC日益普遍。本文将介绍运算放大器的精度局限性,以及如何选择为数不多的有可能达到1 ppm精度的运算放大器。另外,我们还将介绍一些针对现有运算放大器局限性的应用改善。

    精度(Accuracy)与数值相关:系统特性与绝对真实数值之间的差距。精密(Precision)是以数字形式表示的数值深度。在本文中,我们将使用精度一词…