# RE: [SI-LIST] : IC input impedance

Dima Smolyansky ([email protected])
Tue, 13 Oct 1998 08:18:17 -0700

I would guess, the main harmonic of the clock, as it is at this frequency that you will get the most amplitude loss.

BTW, if you estimate the R in the equation I proposed, it may swarm the value of 1/jwc in the overall impedance and make it negligible.

Anybody, any other good ideas?

Thanks,

-Dima
============================
Dima Smolyansky
Marketing and System Development
TDA Systems, Inc.
7465 SW Elmwood St.
Portland, OR 97223
(503) 977-3629
(503) 245-5684
[email protected]
http://www.tdasystems.com

-----Original Message-----
From: [email protected] [SMTP:[email protected]]
Sent: Tuesday, October 13, 1998 6:52 AM
To: Dima Smolyansky
Subject: RE: [SI-LIST] : IC input impedance

what is the relevant frequency w of j*w*c?

Dima Smolyansky <[email protected]> on 10/13/98 05:44:33 PM

To: "'[email protected]'" <[email protected]>,
"[email protected]" <[email protected]>
cc: (bcc: Shimon Turgeman/AME/APPLIED MATERIALS)
Subject: RE: [SI-LIST] : IC input impedance

I suppose, R+1/j*w*c?

Thanks,

-Dima
============================
Dima Smolyansky
TDA Systems, Inc.
7465 SW Elmwood St.
Portland, OR 97223
(503) 977-3629
(503) 245-5684
[email protected]
http://www.tdasystems.com

-----Original Message-----
From: [email protected] [SMTP:[email protected]]
Sent: Tuesday, October 13, 1998 12:55 AM
To: [email protected]
Subject: [SI-LIST] : IC input impedance

what is the input impedance of CMOS devices (for calculating the reflection
coff.)as a function of input capacitance ? how I calculate this impedance ?
what is the formula ?

Best Regards
Shimon Turgeman
Applied Materials

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