At 03:53 PM 7/1/2003 +0200, you wrote:
>Yesterday I checked a few 12-bit, 8-chan A/D
>converters, The Maxim MAX186 was aprox $35 USD and the
>Microchip MCP3208 was $5.60 USD (both from Farnell). Now,
>the Maxim part has a builtin 4.096 vol.ref, but anyway...
>
>Anyone know any special reason these parts are so different
>in price ?
>
>Jan-Erik.

I don't see much difference in performance.

Digikey sells the MAX186 for about $10 in 100's and $21.50 in one-off.
The MCP3208 is 2.63 in 100's and 4.35 one-off.

Also consider the PIC16C773 or similar (such as the PIC16C771, which
doesn't seem to be very available in plastic), but no S&H on-chip, IIRC.

Last I looked there were not any flash PICs with 12-bit or better ADC
on-chip *yet* 8-(

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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