5V VCC 经过电阻分压后产生2.5V电压，该电压经过电压跟随器为余下运放提供虚地，AD8615输出的电压信号为啥产生了尖峰？
In addition to this, the LED is being driven by AD8618 for CN0312 which forms a simple constant current source. the current source is being defined by the resistor divider that generates certain bias voltage derived from Vref.
For CN0363, the…
And there is also AD8615
Thank you, I already figure it out.
In fact the ADA4897 is not RRI because of limitation of differential voltage input, but works just fine as unity gain buffer/voltage follower. I confirmed this by simulation, which also gave…
What is your source impedance in this configuration where you replaced MCP6004 with LT1679 and got higher noise reading?
If your input impedance is "high", you'd want to choose a device which has low current noise density. LT1679 input current…
分光光度计最重要的产品特性就是稳定性，包括三个方面的稳定性要求：随时间和温度的漂移是非常重要的考虑因素； 需要低漂移的精确信号链； 双光束架构也是重要因素。
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…
As per last response, The AD698 linearity spec typically at 75ppm will have an 13.7 bit accuracy, the worst would be at 500ppm which is a 11 bit accuracy.
So, instead of using AD7992 which is12 bit ADC, if i use 14-bit or 16-bit ADC, what would…
You could check out the AD8603. It operates on a single supply from 1.8-5V. It also has low input bias current, low offset and low noise which would be good for your application. If you require a higher bandwidth, you could check out the…
I don't think the ADR512 is a suitable replacement.
It has 4x the output noise; 20x the temperature coefficient.
I noticed that the ADR441 is used on the evaluation board and that there appears to be a resistor divider between the…