RE: [SI-LIST] : Parallel Termination in Theory and Practice

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From: abe riazi ([email protected])
Date: Mon Jul 24 2000 - 10:13:10 PDT


Hi Jerry:

The stub length (between the resistor and receiver pin) is important when the resistor is placed before the chip. For this case the capacitive loading of the stub can be minimized by making its length shorter than the critical length [Lc = (1/6)(Tr/D)].

When the resistor is located beyond the receiver, the stub length is not so critical if the value of termination resistor is properly selected to match the characteristic impedance of the trace.

Best regards,

Abe
-----Original Message-----
From: Gaboian, Jerry [SMTP:[email protected]]
Sent: Monday, July 24, 2000 5:10 AM
To: 'abe riazi'; '[email protected]'
Subject: RE: [SI-LIST] : Parallel Termination in Theory and Practice

 << File: ATT00000.html >> Abe,

If you calculated the critical length for the stub in each case and divided
it by six as Howard recommends, would there be any differences in the
capacitive loading?

Thanks,
Jerry Gaboian

-----Original Message-----
From: abe riazi [mailto:[email protected]]
Sent: Saturday, July 22, 2000 1:18 AM
To: '[email protected]'
Subject: [SI-LIST] : Parallel Termination in Theory and Practice

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