RE: [bascom] DAC
Or you could pass the PWM output of an AVR through an RC followed by an
OPAMP to get the desired voltage.
I use 100K resistor and 0.1uF capacitor. It will depend on the amount of
Ripple allowed in the output and the settling time.
Cheers
Ed Sickmann
-----Original Message-----
From: owner-bascom@grote.net [mailto:owner-bascom@grote.net]On Behalf Of
James Jenings
Sent: Thursday, 14 December 2000 14:49
To: bascom@grote.net
Subject: Re: [bascom] DAC
Yes, but they are expensive ($30-$40each) and require separate power
supplies. You can also find ones with 4-20ma current loop outputs that
can be converted to 10V with a resistor. Try Burr Brown
(www.burr-brown.com)if you really need these. The simplist and probably
cheapest approach is to simply follow the output of the DAC with a
25cent opamp with gain set to aprox. 2 .
James Jennings
Automation Engineer
Eric Le Baron wrote:
>
> Hello all,
>
> I'm looking for a DAC able to produce 0 to 10 Volts.
> Do they exist ?
>
> Thanks,
>
> Eric Le Baron
> Wageningen
> The Netherlands