Hello every one, i cant resolve this circuit:
i need help, any body know how to resolve the circuit.
Thanks Harry, totally makes sense. My school simply has limited resources for surface mount devices, so I'm trying to stick with standard breadboard prototyping if possible.
I'll definitely check out the adapter. I also stumbled upon the OP777,…
Differential amplifiers, like AD8138, can't be used to add two differential signals. They are called differential amps not only due to their input configuration but also by its output voltage which is the "difference" between the two different…
I have a task to optimize noise in BW 10Hz - 10kHz.
Voltage gain shall be around 20..50. OA connected directly to source of signal,
which has impedance 1kOm DC and 50Om AC. OA connected to middle point of R1/R2 divider,
where R1 connected…
设计中使用电阻分压并通过OP777缓冲后得到2.5v基准电压. 因该基准同时作为激励源的基准,故对其精度要求不高. 但测试中发现, Vref上出现周期约为600KHz, 幅度超过100mv的的负脉冲,推测为AD7192的采样引起. 换用AD440+0.1uf作为参考电压则其电压几乎无类似脉冲出现. 是否OP727输出阻抗过大? 因系统并无参考电压精度要求, 考虑成本原因, 能否推荐其它合适的运放做缓冲器? 或者更廉价但驱动能力较强的电压参考来驱动ADC?