Re: icl7107 scale factor

On 30 Apr 2006 01:07:57 -0700, the renowned "maxi"
<maxitubo@xxxxxxxxxxx> wrote:

Hi,

is it possible to setup the icl 7107 for a full scale of 1 volt?

In the data *** i've saw that the full sclae are only 200mV,2 volt
etc.

How can i go to 1 volt full scale?

Thanks

max

You mean you want it to read 1999 at 1 volt in? If so, then just use a
500mV reference rather than a 1V reference with the 2V circuit. You
can cut the integration capacitor value in half to get a bit better
performance (by increasing the swing at the integrator output), but
you probably won't notice the difference.

If you just want to use it with a 3-digit display, and read 999 at 1V
in then just use the 2V circuit and wire the output drive for the
segments B,C (double current of the other outputs) to an overrange
LED.


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

Quantcast