Protecting ADC Inputs

From: Richard (rwskinner)
Date: 12/28/04 

Date: Mon, 27 Dec 2004 18:31:07 -0600

I'm built a circuit board for my Analog card. My normal inputs will be 0-5
vdc but the max allowed on the ADC is 10 vdc.
I was thinking about putting some zeners across the input circuit so the
voltage will never go above 10 volts. I left a space from each input to
ground for a surface mount 1/2 watt resistor. These were there so we could
do a 4-20ma conversion.

So, First, will zeners work without affecting my normal input voltage?
Second, are zeners available close to the 10 volt range?

Any better simplier solutions?

Thanks,
Richard

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---