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Hi dear all,
Recently, I was desgning a broadband driver. One of the paper said "In broadband applications, the buffer must drive an on chip back termination resistor of about 75 ohm in addition to an off chip load of 50 ohm in order to reduce the double reflections"
Anyone know this...
Hi all,
Recently, I am doing a homework which is to design a 32-bit adder with low power(Verilog HDL).As far as I know there are many different structures of adder, like Carry-bypass, Carry select, Carry look ahead.......
Since I am new to digital design, I am not sure which...
Hi guys
I have designed an AMP, and also a buffer for test. But a large Cap is brought by the buffer, which is a problem and limits the BW.
I have come up with an idea, Ind peaking in the last stage of the AMP to overcome it. Thinking it for twice, I feel the direction is a little wrong...
Thank you!
And I remember that you have ever said "When we see a overshoot there must be a feedback", I do not fully undertand this. I think that if there is complex poles there may be overshoot. Could you please explain it in detail.
---------- Post added at 21:43 ---------- Previous post...
Thanks a lot, in fact my ckt does have a feedback as shown in the pic.
Assuming that, every G(s) has the form of A/(1+sRC), and Gf(s)=B/(1+sRC);
Due to the interleaving feed back, the six poles,2 real and 2 pair of complex, are splitting.
I see that one pair of the complex pole will have a...
I know that in a 2nd order system, there is a standard description about Q or damping ratio. How about higher order?
Recently, I have desgned a cascade AMP which is used in the open-loop condition. In the bode diagram, the plot(Mag V.S. Freq) is flat without peaking, while in the trans digram...
Hi, guys
I'am very confused with the concept of peaking and overshoot.
Dose they descripe the same thing just in the different domain?
If not, is there any relationship between them?
Thanks a lot~~~
Dear all,
Recently, I am learning something about RFµwave measurement.And I heard about "virtual instrument"in the measurement. But I'm really confused of it.
Is it a software?
How we use our RFµwave knowlegde in the "virtual instrument"?
Hi dear all,
Recently I read some papers about limiting amplifer, but I'am not fully understand it. In RF design we often heard about PA,mixer,LNA. Why do we seldom heard of LA?
Can someone explain what's the limiting amplifier used for in the RF circuit? In what situation that we need it...
The following picture has two circuits that contain the different way of compensation for polos & zeros. As I know that the 1-st(left)one has a zero on the LHP that approximate equals gm/Cc, the 2-nd(right)one has a zero on the RHP that approximate equals gm*rds*gm/Cc. I may ask that which...
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