搭建了AD8428电路测试，射频信号源从反向端输入一个300K正弦信号，正向输入端接地，输出噪声很大，用示波器测试输出，波形抖动严重;即使是输入全部接地，依然有很大的噪声输出，请问是电路问题吗还是AD8428本身噪声问题，如何解决
The AD8428 circuit test was built. The RF signal source input a 300K sinusoidal signal from the reverse end, and the forward input terminal…
I am trying to design an IN AMP with gain 2000 Using AD8428 but my ic is overheating when i connect input voltage of 1mVpp and output is rectangular with 22Vpp.
Is my IC is damage or there some problem in my connection?
I have some questions about issues I have been having with the AD8428. In my application we are looking at lower microvolt(1-10µV) range at up to 4MHz frequency. We decided to use the AD8428 since it has pretty much the bandwidth we need(3.5MHz).…
Hi,
I am trying to replace op-amp with an AD8428 in-amp, it will be connected to two electrodes that there impedance change when a particle passes between them, the current design excite the electrodes using 100V DC and capture the drop in voltage through…
Dear All,
I am trying to amplify the voltage of a Wheatstone based resistive pressure sensor. I use AD8428 inamp with +Vs and -Vs connected to +15V and -15V from a precise DC supply. the reference pin is connected to the ground. The output of the pressure…
Pls send the AD8428 & AD8275 SPICE model to me.
Thanks.
Message was edited by: Andy Rose - Removed personal email address.
Hi all,
I have recently tried to run a simple simulation of the AD8428. I have downloaded the model, imported into LTSpice and run a simple transient simulation. The problem here is that the output does not amplify the input signal, but it stays constant…
I have been using the AD8428 to amplify fast transient signals in the 10-100 uV range with microsecond time resolution. The AD8428 so far appears ideal for this purpose with settling time less than 1 us at a gain of 2000, but I seem to have destroyed one…
