• AD844

    I want to purchase AD 844 current feed back operational amplifier, I have done simulation of a circuit which involves AD 844. Now  I want to design that circuit but I am not sure How to feed current as an input in AD844.

    AD844 require current as an input…

    • MainPaper.pdf

  • RE: AD844构成的恒流源电路

    也是用AD844么？

  • AD844 CFOA

    I want to purchase AD 844 current feed back operational amplifier, But i am facing a problem while doing simulation part on PSPICE simulator. It is written in data sheet that in case of CFOA current at pin 5 Iz=+ or - of Ix.

    With the help of AD 844…

  • RE: DA板卡输出驱动长电缆,放大器选型?

    AD817的驱动能力比AD844强，而且AD844驱动大电容性负载需要外接RC，其它特性基本差不多，谢谢回复，  ！

  • RE: 签个到，送您好礼啦！（获奖名单已公布）

    北京 海淀区 电路设计 AD844

  • RE: AD844 datasheet error

    Hi tucsonmike,

    Thanks a lot for pointing this out.
    I'll send the concern to the product owner.

    Thanks a lot again tucsonmike.

    Best Regards,
    Dann

  • AD844   TZ管脚

    我在做电流发生器时，用到AD844 。  TZ管脚与2管脚电流相同，这个相同有什么限制条件？？以及2管脚和3管脚电压相等时的条件限制？？

  • RE: AD844可以单电源供电吗，我想用他做一个恒流源电路，+5V和地给他供电，没有负电压可以吗

    ad844最小供电电压±4.5V，所以要单电源供电必须大于9v

  • RE: Is there any possibility to implement 8 pin Fully differential current conveyors using AD's, as we do implement CCIIs and DVCCIIs with AD844?

    Hi Ali,

    The circuit you're asking is a complex matrix transfer function, and is not possible to implement with AD844s. The implementation you're asking is done inside the IC and is extremely complex using discrete components. 

    Regards,
    Gauzz

  • AD844是一款不错的片子，问题来了

    为什么pspice中的AD844只能放大到400mV左右，官网的spice模型也是400mV左右，实际中易震荡了，放大倍数又是提不上去，有没有好的方法来解决这个问题呢，是不符合稳定条件，还是电源耦合，也可能去耦不好，头快炸了，总之是见鬼了，有没有lBOARD LAYOUT参考啊，请教大家，小弟不胜感激

    下图是个仿真例子，另外那个过冲怎么回事啊