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 86 Family interview questions  86 Family Interview Questions
 VLSI interview questions  VLSI Interview Questions
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 Embedded Systems AllOther interview questions  Embedded Systems AllOther Interview Questions
Question
You have a driver that drives a long signal & connects to an
input device. At the input device there is either overshoot,
undershoot or signal threshold violations, what can be done
to correct this problem?
 Question Submitted By :: Markus
I also faced this Question!!     Rank Answer Posted By  
 
  Re: You have a driver that drives a long signal & connects to an input device. At the input device there is either overshoot, undershoot or signal threshold violations, what can be done to correct this problem?
Answer
# 1
To avoid signal threshold violations(due to loss in long
path), use repeaters to boost signal strength at spec.
intervals.
 
Is This Answer Correct ?    0 Yes 1 No
Baba
 
  Re: You have a driver that drives a long signal & connects to an input device. At the input device there is either overshoot, undershoot or signal threshold violations, what can be done to correct this problem?
Answer
# 2
This is a signal integrity question for board designers.
there are two types of termination schemes viz. series and
parallel termination. series termination is where a resistor
of small value ( rule of thumb 1/2 of characteristic
impedance  of the trace ) placed near the source ( near
driver). the parallel termination is a combination of two
resister ( rule of thumb twice the char. impedance f the
trace) placed near the destination ( input) where one
resistor connects the signal trace to the VCC and other
connects to the GNd.
 
Is This Answer Correct ?    2 Yes 0 No
The Big Boss
 
 
 
  Re: You have a driver that drives a long signal & connects to an input device. At the input device there is either overshoot, undershoot or signal threshold violations, what can be done to correct this problem?
Answer
# 3
a cdm clamp can be used at the receiver input to protect 
the circuitry form overshoot/ undershoot
 
Is This Answer Correct ?    0 Yes 0 No
Nikki
 

 
 
 
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