I got it, thanks. Ad8651 seems to be proper. I need to use high resistance value resistors with the opamp and ad8651 seems to be a fit for that too.
Hi Harry ,
Thank you for the information with regards to this issue .
AD8651 has a simulation model have taken this as a reference .
Thanking you
With best regards and wishes
请问 AD8651和AD8652具体在性能上有什么区别，哪款性能更优
北京 中关村南大街 模拟放大以及电路设计 关注AD8651和其他精密运放
JeradL,
The 1.8V requirement is tough. There are not many op amps from any manufacturer that would be good for a mic preamp,
the reason being they are focused on very low power, so they are usually CMOS and have high flatband noise. For 2.7V
or higher…
Hi Sampath,
I suggest you can use the AD8651/AD8652 part. AD8651/AD8652 has a bandwidth of 50 MHz at 5V supply, has low noise density of 4.5 nV/√Hz at 100 kHz, has a typical offset voltage of 100 uV and slew rate of 41 V/μs. You can download its datasheet…
Hi,
My name is charles.
I'd already used the the high speed video amp(AD811 and AD8057)and ultra low input current offset amp(AD549) respectively in my simple I-V converter circuit to get a singnal from PMT(2uA max) with Rf(100Mohm).
Although…
如下图，使用下图的话能够实现图中的输出？
vi 相对 SIGREG 的输出为 0-5v。系统电压为24v，如果要实现对地电压为0-5V的缓冲输出，是必须用高电压运放来实现么
Jason,
For a gain of 10, times 400kHz, times 10-20 margin, I would pick an op amp with a gbw of 40-80 MHz.
WRT noise, look at AN-940 for a table of low voltage noise op amps and a table of low current noise
op amps. Since you are running at a noise…
Hi Alexey,
Here are some of FULLY CMOS designed Amplifiers in ADI portfolio.
1. AD8651/AD8652 (50 MHz, Precision, Low Distortion, Low Noise CMOS Amplifiers)
a. 2.7 V to 5.5 V Supply Operation
b. -0.1 V to (+Vs + 0.1 V) Input Voltage Range
c. 30mV…