采用AD823AR运放做一个硅光电二极管两级放大电路,光源为脉冲激光,激光上升下降沿均为5ns,脉冲宽度为100us,设计运放电路原理图见图1,输出波形见图2,输出为什么和我预想的不同?
图1
图2
Hi Jonathan,
The AD8512 and the AD8620 are not pin-to-pin compatible with LTC2055 so I would not like to use them.
I'll try to test with AD823A.
Regards,
Kazu
Hi Goz,
One more question. According to the AD823A data sheet, its single supply voltage spec is 3V~36V.
Do you have any plan to change this spec like AD822?
Regards,
Kazu
大家好,我想给信号采集电路加一级缓冲(同向输入,单位增益放大),需要供电+-12V,压摆率至少20V/us(越高越好)以上。需要缓冲的信号为2MHz以下的单频信号,由于要考虑低功耗并且驱动容性负载,准备评估的双运放芯片有:
ADA4622-2(665uA),ADA4610-2(1.6mA),AD823A(5.1mA),AD8620(3.5mA)以及AD8066(7.6mA)
综合来看ADA8620最优,但是价钱太贵了。准备用ADA4610,但是压摆率又有点低。
我看了这几个芯片的THD+N指标…
Hi Wayne,
I'm sorry but we don't support that simulator. You can simulate your circuit in ADIsimPE powered by SIMetrix/SIMPLIS instead.
There is nothing wrong with the model. You are using AD823A spice model and not of the AD823. The AD82…