Hi Harry,
finally i've received schematic of test point that involves AD744
Hi Francois,
In addition, the major difference between ADA4817 and AD744 (the one used in the application note of Walt Jung) is that it uses different polarity of JFET (ADA4817: N-Channel and AD744:P-Channel). It means that the polarity of the Walt's…
电荷放大如上图所示，实际测量中出现自激现象，RC滞后补偿和将R4变为1K已经尝试过，无法消除自激现象，自激波形近似三角波，峰峰值正负5V。这是什么原因，如何解决。为什么AD824不会出现自激现象
Hi Kaos,
Shown on right side of Figure 47 of AD549 datasheet is the bottom view of the amplifier. Below is the outline dimensions for AD744 and you can take this as reference, it has the same package as AD549.
Regards,
Jino
Hi Mark,
Yes I agree,selection of op amp is not easy. You should be able to identify which parameters your application should be of most interest.It could be the noise, precision or the cost for example. If your going to choose between AD845 and AD744…
Please teach me AD215.
I would like to trim input offset.
1.
Do you have a reference circuit?
I think that it uses Trim Pin of AD744 in Fig23.
But, in recent years, OPAMP with TrimPin is few.
I checked AD203SN data sheet.
Fig.20 and Fig21 are…
Jebas,
I can think of over 60 opamps with a 40V/usec slew and less than 0.5mV offset that run off 30V rails. I would also be looking for a low input bias current as a 200Hz filter needs large RC time constants, which you would probably want to generate…
最爱ADI放大器之AD215 by 1901818846@qq.com
AD215是一款速度高达 120kHz的高速隔离放大器，其在强干扰的工业环境下的应用非常广泛，比如电机控制和多路高速数据采集系统。
1. AD215的内部结构与工作原理
AD215是美国AD公司出品的模拟信号输入输出隔离放大器,是技术先进,功能完整的隔离放大器,大多数的模拟信号经 AD215隔离后的动态性能和频带宽度均不受影响。AD215的速度和准确度可满足几乎所有的测量场合的速度和频带的应用要求,它的额定功率带宽为120k…
AD215是美国AD公司出品的模拟信号输入输出隔离放大器,是技术先进,功能完整的隔离放大器,大多数的模拟信号经 AD215隔离后的动态性能和频带宽度均不受影响。AD215的速度和准确度可满足几乎所有的测量场合的速度和频带的应用要求,它的额定功率带宽为120kHz,满量程线性误差为0.005%,隔离电压有效值为1500V,适用…