[SI-LIST] Re: Drive strength to Load conversion
- From: Ajay Dhingra <ajay.dhingra@xxxxxxxxx>
- To: Lee <leeritchey@xxxxxxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Sun, 17 Aug 2014 11:50:03 +0530
Hi Lee
Thanks for your reply.
I further have two things in my mind.
First: I don't have a controlled impedance environment.
Second: for any Transmission line, there is a cap load at the end of the
transmission line. The cap load requires certain amount of charge so that
it's voltage reaches logical threshold with a desired ramp. at the end of
the day cap will change the ramp and hence timing. And eventual ramping of
that voltage is determined by drive strength of the driver. though it
happens in stages, first charging the transmission line and then
transmission lines forwards the same ramp to cap load. So my question is
how to approximate the drivers capability for a particular load or what max
load a drive can drive based upon its drive strength.
Thanks
Ajay
On Sat, Aug 16, 2014 at 11:50 PM, Lee <leeritchey@xxxxxxxxxxxxx> wrote:
> We don't drive capacitive loads any more. We drive impedances on the
> order of 50 ohms. transmission lines.
>
>
> -----Original Message----- From: Ajay Dhingra
> Sent: Saturday, August 16, 2014 11:09 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: Drive strength to Load conversion
>
>
>
> Sent from my Huawei Mobile
>
> -------- Original Message --------
> Subject: Re: [SI-LIST] Drive strength to Load conversion
> From: Ajay Dhingra <ajay.dhingra@xxxxxxxxx>
> To: Lee <leeritchey@xxxxxxxxxxxxx>
> CC: si-list@xxxxxxxxxxxx
>
> Just for first order estimation if that particular drive strength is
> sufficient for an equivalent cap load. Or in other words what max cap load
> can be driven by x mA drive strength.
>
> in a situation when only drive strength in mA information is available how
> to assess the driver capability.
>
> Thanks
> Ajay
>
> Sent from my Huawei Mobile------------------------
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--
AJAY DHINGRA
Bangalore, India
9741414027
It is Attitude,Not Aptitude, that determines your Altitude.
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