Hi All,

I designed a butter-worth 4th order filter with Fc = 3.5KHz,

I wish to use the part OP496GS.

For verification of the design I acquired the psice model of the part OP196.

I am using Multisim 10.1 for simulation of my circuit.

When I am doing…

AN-581_cn.pdf

参考ADI 应用笔记AN_581《单电源应用中的偏置和去耦运算放大器》设计直流耦合电池供电电路，在P6底部提到电路中 RA,RB电阻阻值的选择需要查看AD663A 数据手册，我查过后发现没有AD663A这款芯片，AD6634/6635/6636是已经停产了的模数转换器，数据手册中也没看到这一部分的内容，这个要怎么解决呢？

问题2：该电路中，使用了一个跟随器电路，它是起隔离的作用吗？但是为什么反相端和输出端之间连接了一个110k欧姆的电阻呢？

Hi, i would like to know the OP296 input resistance. I was wondering if the OP296 works as a transimpedance amplifier with a 1M feedback resistance (so i need that value). any advice?.

And the same question for ADA4528.

Thanks.

Around 256K data is stored as a bunch in memory and we need to convert this digital data to analog at once by applying it to AD5542A dac ic. As chip select need to go low to high after each 16 bit data to latch it to dac. 

Dear AD engineers,

Could I ask if +5V/-5V is supported for AD5542A in bipolar mode? It is specified in datasheet everywhere that a 2.5V reference should be used, such as in page 8: Pin REF Connect this pin to an external 2.5 V reference.

Thanks a lot…