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In the application of operational amplifier, it is said that a basic requirement in almost all operational amplifier circuits is component matching external to the amplifier itself.
I am wondering why? and normally which kind of component matching is needed? why couldn't the op-amp itself...
For a differntial amplifier, or just an op-amp as an example, the relations between some parameters are not very clear to me.
What is the relation between its linearity and input differential range?
When the linearity better, is the input differential range also definitely larger? further the...
now I want to do the on-wafer measurement, so I need to purchase a probe card.
But I don't know much about the probe card itself.
Could you please give me some information about the probe card or recommend some website to me , in which I can order the probe card?
thanks!
Hi,
I want to design a voltage regulator which is used after the rectifier to filter out the spikes of the supply voltage generated by the rectifier. The voltage drop of the output voltage compared with the input voltage of this voltage regulator should be as small as possible.
I am wondering...
hi,
the standard size of the pad in the technology is 100um*100um, now I want to have a pad with the different size,(200um length*100um height) which is not available in the design kit.
I tried to put two standard pads together, and connect them with the metal layers, but DRC always shows the...
cadence snap to grid off
Hi,
In the layout, the X snap spacing and Y snap spacing can be setted.
I had setted these spacings as 0.005 when I drawed the layout, but afterwards, I found there seems to be a minimum gird setting defined by the technology. This minimum grid is probably 0.05 um in...
Hello, I am not sure about some rules of the layout and I am wondering are there any reasons for these rules.
1, The ground plate should be as large as possible.
It is also better for the voltage supply plate as large as possible, therefore there is a very large overlap area between the...
If there is a voltage spike in the useful signal, the duration of this spike can be between several hundred ns to a few us. The period of the useful signal is 1ms
usually how do people remove this voltage spike in the circuit? I want to build a simple filter by my own, this filter will only...
I have a question regarding the Schmitt trigger . It seems like Schmitt trigger is often used in integrated circuit to obtain a steep signal
But a simple inverter can also do this job, to make the output signal have a steep transition
I want to know more about Schmitt trigger ,normally when...
in order to convert the AC supply to DC supply for the internal circuit, normally a rectifier is needed. But the output of the rectifier can not be a constant and always has the ripples.
Are there any methodes to minimize the ripples after the rectifier?
Or is it possible to obtain a constant...
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