• ADA4622-4 / ADA4622-2 / ADA4622-1 FAQ

    Q1. What is the ADA4622-4 / ADA4622-2 / ADA4622-1?

     

    A1. The ADA4622-4 / ADA4622-2 / ADA4622-1 is the next generation of the AD824 / AD822 / AD820. It is a single supply, 30 V, 8 MHz, Low Bias Current, Single-Supply, RRO, Precision JFET Op Amp.

     

  • RE: ADA4622-1/ADA4622-2 Output Voltage

    Hi Mochi,

    This is a typo in the data sheet and will be fixed in the upcoming Rev.C data sheet. The correct values for a 5V supply are shown below.

    Regards,

    Rob

    5V supply Typ Max

    VOL

  • ADA4622 Current Noise Density

    I read Datasheet of ADA4622-1/ADA4622-2/ADA4622-4(Rev. D).

    I have a question.

    IN ELECTRICAL CHARACTERISTICS, VSY = ±15 V  Current Noise Density is 0.8fA/√Hz. (Rev. D | Page 4 of 37)

    I See.

    IN ELECTRICAL CHARACTERISTICS, VSY = ±5 V  

  • RE: what is the ad8676 best voltage follower setup?

    hi Hary,

    in fact I will be mostly using it for DC measurements, ADA4622-2, ADA4610-2 seem to have large offset, ADA4000-2 even bigger.

    Regards,

    Mike

  • RE: AD822 Unity Gain Stability

    I would not do a new design with the AD822;  the ADA4622-2 is the next generation part with much better

    specs and lower price.  Usually rule of thumb for gbw variation is +/-20%.

    Harry

  • RE: AD822A Paarasitic capacitance

    The AD822 is over 20 years old and the next generation part, the ADA4622-2 is released.

    It has a spice model and the data sheet lists differential and common mode capacitance.

    Harry

  • Input/output impedance when disabling the ADA4622-1

    I'm curious about the shutdown/disable feature of the ADA4622-1.

    What is the impedance looking into the ADA4622-1 at its inputs and output when the part is in shutdown?  I like the idea of a circuit like Figure 99 of the datasheet, but what extra load…

  • RE: AD8638 weird behaviour

    What about the ADA4622 ? This one does not seem to have the differential limiting input.

  • RE: AD7768 analog input range in PIN mode

    Hi John,

    Firstly, I would say if you are using the ADA4622-2 that this amp may struggle to drive the AD7768-4 directly on it's own. Generally we would need to use an additional driver amplifier between it and the ADC to settle the input to the ADC due…

  • 运放输出振荡

    参考ADA4622-2手册中推荐的电路设计的峰值检测电路,因ADA4622-2未到货,用AD828替代。发现输出(N1:7脚)总是会振荡,且放大器发热严重,但充电电容上的电压基本接近需求(N1:5脚)。尝试C3、C5使用3.3pF、51pF、100pF电容,断开R5,将R4换成10k,去除VD2(排除结电容影响)均不能解决问题。请问该如何处理?波形图中已有颜色标注信号来源。