Jan 23, 2007 #1 yolande_yj Full Member level 3 Joined Jan 20, 2005 Messages 152 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 1,647 It is a high frequency transimpedance amplifier, input signal is 500MHz. and the input current signal is small. How to generate and measure the input current signal? thanks
It is a high frequency transimpedance amplifier, input signal is 500MHz. and the input current signal is small. How to generate and measure the input current signal? thanks
Feb 27, 2007 #2 S suria3 Full Member level 5 Joined Mar 5, 2004 Messages 300 Helped 17 Reputation 34 Reaction score 5 Trophy points 1,298 Activity points 3,028 Can you clearly define on what measurement you are talking about. Your questions is not fully understandable.
Can you clearly define on what measurement you are talking about. Your questions is not fully understandable.
Feb 27, 2007 #3 S seanyang Junior Member level 3 Joined Dec 12, 2006 Messages 27 Helped 6 Reputation 12 Reaction score 1 Trophy points 1,283 Activity points 1,404 Basicly the differentail pair input current is zero. But you still can see the femto order or pico order current. Actually we don't care it . You sure you really want do it?[/img]
Basicly the differentail pair input current is zero. But you still can see the femto order or pico order current. Actually we don't care it . You sure you really want do it?[/img]
Feb 27, 2007 #4 P pixel Advanced Member level 2 Joined Sep 16, 2004 Messages 508 Helped 69 Reputation 138 Reaction score 16 Trophy points 1,298 Activity points 3,993 I dont know what exactly you need, but noise level has to be small.