3.3V的电源可以正常输出 3.0Ｖ的基准电压源， ADA4805-1采用的是什么电源，如果也是3.3Ｖ电源，那么其输入共模电压将只能达到２.３Ｖ，无法接受3Ｖ输入电压
1. 用示波器看看OPA170输出是不是震荡了 ？
2. 推荐用ADI验证过的ADA4805, AD8031等做参考源驱动。
I am testing current capability of op-amps by evaluating voltage swing to rails with simulation in PSpice.
I do it by sweeping through a current source at the output (at 75°). For negative rail (and currents) the V2 is set to 0V.
However ,ADA4805 shows…
ADA4805-1 的带宽范围为105MHz， 也可以满足双极性要求
Thank you for the recommendation. The ADA4805 seems to work in the application where we convert a CMOS 3.3V signal to a signal that swings between 0 and -6V with a rise and fall time between 1 and 2 microseconds. If the ADA4805 output has…
Yes, I believe that the ADA4805 ICs are used as high resolution, high precision analog-to-digital converter (ADC) drivers.
Thank you for using ADI parts. As for your queries:
1. Replacement for AD8244 - you can use ADA4805-1 (0.2 µV/°C Offset Drift, 105 MHz Low Power,Low Noise, Rail-to-Rail Amplifier).
Thnak you for your support.
> How important is it for you too use start streaming?
Now I building demonstration environment of ADA4805-1 and precision ADC for our customer.
So I need to run ADC continuously.
If I can not run AD7982…
In a fully differential ADC driver. the VOCM pin should be connected to your Vref/2. Please see attached example schematic using the ADA4940-1 a newer part which I also recommend that can drive the AD7663. and then you can also use two single ended A…
I don't like to use the word "never", but I'm tempted to say you will never get your circuit working.
If you have nanohenries of inductance in your supply leads and 2-5pF of stray capacitance everywhere,
and 1k-10k resistors…