• 谈谈运放与音乐韵味AD827、AD712、AD797三款运放的比较

    谈谈运放与音乐韵味AD827、AD712、AD797三款运放的比较 by szddk@sina.cn

    运算放大器是运用得非常广泛的一种线性集成电路。而且种类繁多,在运用方面不但可对微弱信号进行放大,还可做为反相、电压跟随器,可对电信号做加减法运算,所以被称为运算放大器。不但其他地方应用广泛,在音响方面也使用得最多。例如前级放大、缓冲,耳机放大器除了有部分使用分立元件,电子管外,绝大部分使用的还是集成运算放大器。而有时候还会用到稳压电路上,制作高精度的稳压滤波电路。

    各种运放由于其内部结构的不同,产生的失真成分也不同…

  • 最爱ADI放大器之- AD712

    最爱ADI放大器之- AD712 by huangguimin

         我最喜欢的ADI放大器AD712是一款双通道、高速、精密、单芯片运算放大器,具有极高的性价比。我是玩音响的,也就是玩HIFI的,我用这颗运放作为整个HIFI功放的输入前端,也就是前级。运放对选型对整个功放的素质影响很大,不同的运放能产生天壤之别的音质差异。对这颗运放比较熟悉,整体来说AD712是不错的运放!属于监听级的类型。特显中频与高频之间的过度交替。声场比较广!低音稍少!高音稍粗(相对高级的)低噪音很静没有半点杂音。听纯音乐女声不错属于比较耐听的运放之一…

  • RE: AD7124 FAQ: What are the differences between the standard AD712-4/8 and the B-grade

    Answer: There are some key differences between the B-Grade (AD7124-xBBCPZ/AD7124-xBBCPZ-RL) and the standard (AD7124-xBCPZ/AD7124-xBCPZ-RL) AD7124-4/8. Choice will depend on your application requirements, here are the key differences between the two …

  • Question about AD712

    Hi All,

    I need to clamp the Vout of the AD712 as attached. In this case the output of the AD712 is shorted to GND through a diode for a long time. The AD712 might be broken since it does not have a protection circuit?

    Do you know any other better circuit…

  • 最爱ADI放大器之- AD712

         我最喜欢的ADI放大器AD712是一款双通道、高速、精密、单芯片运算放大器,具有极高的性价比。我是玩音响的,也就是玩HIFI的,我用这颗运放作为整个HIFI功放的输入前端,也就是前级。运放对选型对整个功放的素质影响很大,不同的运放能产生天壤之别的音质差异。对这颗运放比较熟悉,整体来说AD712是不错的运放!属于监听级的类型。特显中频与高频之间的过度交替。声场比较广!低音稍少!高音稍粗(相对高级的)低噪音很静没有半点杂音。听纯音乐女声不错属于比较耐听的运放之一!由于我只买到kn塑封。陶封找来找去都无得卖…

  • 谈谈运放与音乐韵味AD827、AD712、AD797三款运放的比较

    运算放大器是运用得非常广泛的一种线性集成电路。而且种类繁多,在运用方面不但可对微弱信号进行放大,还可做为反相、电压跟随器,可对电信号做加减法运算,所以被称为运算放大器。不但其他地方应用广泛,在音响方面也使用得最多。例如前级放大、缓冲,耳机放大器除了有部分使用分立元件,电子管外,绝大部分使用的还是集成运算放大器。而有时候还会用到稳压电路上,制作高精度的稳压滤波电路。

    各种运放由于其内部结构的不同,产生的失真成分也不同,所以音色特点也有一定的区别。本来我们追求的是高保真,运放应该是失真最低,能真实还原音乐…

  • Operational amplifiers for usage in GIC

    Dear AD Engineers,

    In order to construct device for measurements in condensed matter physics we analyze different filters.

    We search a modern operational amplifier for usage in Generalized Impedance Converter (GIC).

    Looking in AD collection of dual operational…

  • RE: LTspice stepping build-In Opamp models

    Hello JGillis,

    Have you tried your suggested solution? 

    I just tried it and it failed.


    Please upload an example.

    .

    My settings:

    .model 712 ako AD712
    .model 795 ako AD795
    .lib ADI1.lib
    .step param ADX list 712 795

    Helmut

  • RE: Simulate the macro spice model in other simulators

    Hello Vic.

    It depends.

    The models of switching regulators are only for LTspice.
    Analog parts like opamps, analog switches and special analog functional ICs often have general SPICE models.
    Sometimes these are older models which eventually have not all the…

  • AD624 PGA

    hi.. I am designing programmable gain low noise amplifier by using AD624 with AD7528 and AD712 . Can you please help me out with circuit operation and how can i change my gain using digital data.