True, but the noise I am referring to (and the ONLY noise which will be
reduced by sleep) is the PIC's own generated digital switching noise and
oscillator output,which will be in the megahertz range,usually.

Sean

At 10:40 AM 6/1/99 +1200, you wrote:
>Good enough - but you're not going to get mush averaging of a 50 or 100Hz
>(etc.) power line noise in a 800uS sampling period - unless you sample
>synchronously with the mains!
>
>Richard
>> -----Original Message-----
>> From: Sean Breheny [mailto:shb7@CORNELL.EDU]
>> Sent: Tuesday, June 01, 1999 10:34 AM
>> To: PICLIST@MITVMA.MIT.EDU
>> Subject: Re: Sleep
>>
>>
>> Hi Richard,
>>
>> Well, yes, you are right. I guess the point is that the S&H
>> cap will tend
>> to average out small amounts of noise during the sampling time, BUT we
>> don't want power supply noise to throw off the reference
>> during the actual
>> A/D conversion. I think that is the point of putting the PIC in sleep.
>>
>> Sean
>>
>> At 08:22 AM 6/1/99 +1200, you wrote:
>> >I may be off track - but you're saying you have low noise in
>> sleep mode -
>> >but isn't this is during the A/D conversion period - not the
>> sampling time?
>> >Sorry if I've got this wrong.
>> >
>> >Richard
>>
>> |
>> | Sean Breheny
>> | Amateur Radio Callsign: KA3YXM
>> | Electrical Engineering Student
>> \--------------=----------------
>> Save lives, please look at http://www.all.org
>> Personal page: http://www.people.cornell.edu/pages/shb7
>> mailto:shb7@cornell.edu ICQ #: 3329174
>> ________________________________________________________
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>
|
| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
\--------------=----------------
Save lives, please look at http://www.all.org
Personal page: http://www.people.cornell.edu/pages/shb7
mailto:shb7@cornell.edu ICQ #: 3329174
________________________________________________________
NetZero - We believe in a FREE Internet.  Shouldn't you?
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