c*******l
发帖数: 4801 | 1 比如最好是前级输出是low imp,后级输入是high imp? |
f*****0
发帖数: 489 | 2 impedance matching is rarely required for anything other than rf. in those
cases, you want the prior amp's output impedance to be low and the input
impedance of the next amp to be high. |
n*****y
发帖数: 134 | 3 depends on you want current gain or voltage gain.
By the way, it is better that you read textbooks more carefully.
【在 c*******l 的大作中提到】
: 比如最好是前级输出是low imp,后级输入是high imp?
|
c*******l
发帖数: 4801 | 4 恩恩
我没有看书，光看袅录象 :(
【在 n*****y 的大作中提到】
: depends on you want current gain or voltage gain.
: By the way, it is better that you read textbooks more carefully.
|
C*******g
发帖数: 82 | 5 the high impedance node is sensitive to interference and noise.
If the interface is off-chip it is really a problem since your circuit will
easily pick up noise and so on from the ambient;
If the interface is on-chip it might be better
If the output is low imp, the input of the following stage is high imp, then
it is a low impedance node and therefore free of the problem I mentioned
above.
There might be other reasons though...
【在 c*******l 的大作中提到】
: 比如最好是前级输出是low imp,后级输入是high imp?
|
M*******c
发帖数: 4371 | 6 depends upon what you want from the circuit
RF matching？
power system stability？
【在 c*******l 的大作中提到】
: 比如最好是前级输出是low imp,后级输入是high imp?
|
