[SI-LIST] Re: Bit Error Caused by NOISE

Pat,

Actually, I do use a voltage regulator. However,it's
used to convert 3.3V supply to 5.0V for ATC and
others.

This Supply is the interface from the customer.
So does the noise:)

Regards,

Lianghu

--- "Zabinski, Patrick J." <zabinski.patrick@xxxxxxxx>
wrote:
> 
> Lianghu,
> 
> In addition to the 3.3V supply, is there any other
> supplies you can use?  For example, is there a 5.0V
> supply you can use to drive a voltage regulator,
> which in
> turn outputs a 3.3V supply for the ATC? 
> 
> You'll burn some power and add some parts, but it
> is likely to do wonders in isolating the ATC's 3.3V
> supply.
> 
> Pat
> 
>  
> > Hello,
> > 
> > I'm designing a burst mode receiver module for a
> > system customer.
> > 
> > There is a Auotmatic Threshold Controller(ATC) in
> this
> > module. This ATC circuit together with Power NOISE
> > cause many many Bit Errors. 
> > 
> > The problem is that the Power is given by the
> system 
> > board. The noises of VCC(3.3V) and GND(0V) are
> both
> > 500mVp-p! And the minimum sensitive of the ATC is
> only 
> > 10mV.Well, the bit errors occur.
> > 
> > Furthermore, the total current is about 500mA.Many
> > passive filters will lead to drop of VCC.
> > 
> > Any suggestion?
> > 
> > Thanks,
> > 
> > Lianghu
> >
>
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