• RE: 关于放大器的选型

    推荐ADA4522-2, 直流性能非常好。

  • RE: ADA4522 clamp circuit and

    Hi Karel,

    With regards to your questions, here's my answer for you.

    1. Yes, this configuration will not damage the device but it will increase the offset voltage due to the imbalance source impedance of the ADA4522.

    2. Can you elaborate what are…

  • What is the Common mode voltage range of ADA4522-2 ?

    Hi,

    I would like to know the common mode voltage range of ADA4522-2. I am using this as a buffer. The supply voltage to the Op-Amp is ±5 V and my input would be near to 5V( assume 4.9V). What can be my possible output value.?

    Thanks in advance.

  • RE: ADA4522-2上电时序

    我拿另一块PCB光板只焊接了运放和两路的输入下拉电阻(1MΩ)反馈电阻(0Ω),使用两台直流稳压电源(固纬的PSW80-13.5)分别接到运放的正负电源端,手动控制两个电源的上电,现象与之前一致,负电压比正电压先上电的情况下,输出和Vin-的电压是随着正电源电压走的。此时用万用表的表笔点一下Vin-管脚,电压消失,变为0V。把表笔从万用表上拔下(即悬空)再次做上述试验,Vin-上的电压仍然会消失。但如果不做任何动作,Vin-上的电压会一直保持。

    货源问题应该不大,我也会想办法找另外的批次再做试验看看…

  • RE: Offset Voltage adjustment for OP177

    Thanks Harry,

    Good advice. I will know the temperature problem to our customer.

    Does Autozero-AMP means current Zero-drift AMP?

    I will recommend your ADA4522-2 to our customer if so.

    Thanks Kaos

  • RE: Requirement is to measure 50nV to 1V.Suggest ADC?

    Hi, Muthu.

    We have recommended drivers for AD7177-2. Please see ADA4528-2 and ADA4522-2. You can also use our evaluation board as your reference circuit. Please see attached schematic.

    Thanks,

    Jellenie

  • RE: 高精度小信号放大电路

    ADA4522资料中的Figure 81,配合ADC,可以用来搭建仪表放大器,其中ADA4522负责放大,ADC负责减法器。如果但从噪声角度而言,ADA4522的噪声性能要优于AD8422. AD8422的优点是CMRR高,带输入过压保护。孰优孰劣,得测了才知道。给您提供两种方案,一是AD8422 + AD8476 + AD7177,二是ADA4522/ADA4528 + AD7177.

  • ADA4522 Drift

    Is there any details of the long term drift/aging of this component

  • 关于ADA4522-2的外接电阻

    大家好!

    目前本人正采用AD8676用于积分电路。考虑到ADA4522-2的失调电压等指标更优,考虑换用该芯片。粗读ADA4522-2的datasheet之后,想请教一个问题:

    ADA4522-2的输入电阻标注为30k(差模)、100G(共模)。

    那么,对于反相积分电路的积分电阻R1(目前使用AD8676时取R1=5.1K),其阻值是否需要满足某些要求呢?例如小于XXX,或者大于YYY。

    谢谢!