• AD8619 Vol Measurement

    Hi folks,

    I have a dilemma here and I need help. In my knowledge, Vol is the measurement of DUT output wrt the negative supply. The passing limit of my Vol is 0-60mV. The typical is about ~40mV. But during my simulation in NI multisim, the value I get…

  • AD8619 Vol Measurement

    Hi folks,

    I have a dilemma here and I need help. In my knowledge, Vol is the measurement of DUT output wrt the negative supply. The passing limit of my Vol is 0-60mV. The typical is about ~40mV. But during my simulation in NI multisim, the value I get…

  • Request AD8619 additional data

    Hello

    My customer request additional data for AD8619 for attached file.

    Could ADI submit like this?

    The reason why they are going to analyze their issue to compare other device (not oscillation device).

    The issue is oscillation on their trial sample…

  • EMIRR characteristic of AD8619 at portable radio frequency band

    Hello

    I have a question for EMIRR of AD8619 from the customer.
    Do you have a data of EMIRR characteristic for AD8619?
    Please refer to a attached graph.

    Buck ground:
    The customer will use AD8619.
    But They are requested to influence of their system by RF signal…

  • AD8619,AD8694 Noise immunity at portable radio frequency band

    Hello.

    The customer requested as follows for AD8619 and AD8694..
    Do you have these data?
    Please see to “Background” for detail information.

    Q1: Why AD8619 and AD8694 has tolerance for noise at high frequency band(144MHz~3.6GHz)?
    Q2: The noise immunity…

  • RE: 这11大应用领域,你在里面么?

    从事汽车应用相关领域,用的ADI的运放很多,AD8619,  AD7694   

  • RE: BMS with Li-Battery

    An ORing circuit should work for this application as you are trying to maximise standby rather than the peak current from the battery pack. There is a good example using the AD8619 opamp and a MOSFET to overcome the losses associated with using a diode…

  • RE: Selecting input power - external, usb or batteries

    The schematics as published in the article on EDN shows the power connection of the AD8618 at the source of the MOSFETs (output ORed node). The AD8619 is a quad op-amp, so only 1 power connection is shown.

    In the case you want to use 4 single op-amps…

  • RE: 偏置电流大小对弱电流测量的影响

    对于测量小的输入电流,需要考虑的一个比较重要的参数就是运放的偏置电流,目前我们的运放的最小的偏置电流是60fA,型号为AD549,其次为AD8619/8/6(偏执电流为1pA)。

    你可以到如下链接查询更多相关产品:

    http://www.analog.com/en/precision-op-amps/low-input-bias-current-amplifiers/products/index.html

  • RE: 关于ADuC7020芯片若干问题请教

    我检查了外围电路,是按照ADI官方的要求在Vref端的接一个0.47uF的电容到地,通过上述程序设置发现仍然会出现上述问题,检查Vref端2.5V电压是正常的。

    网上查找资料说可能和前后级电路搭建有关系,我这个DAC1端输出的2.5V电压后续是通过AD8619构成的电压跟随器后为两个放大电路提供偏置电压和为一个传感器提供参考电压的,具体如下图:

    其中REF3I端是DAC1输出的电压,REF3是经过电压跟随器的电压。

    难道是后续电路的问题么,是这个端口的驱动不够,如果驱动不够的话,选用什么芯片或搭建什么电路比较合适…