Why not just use 2 precision resistors to make a voltage divider off of
your 4.5 volts. If that's not close enough, just trim it in with your
voltmeter and 1 more small resistor in series with the appropriate
resitor (or a large value in parallel)
Or do you want to manufacture these circuits?


>
>Hello.

I am planning to read some 0.5V to 4.5V sensor
voltages, and need good 0.5V and 4.5V precission
references. I plan to use Analog Devices REF194
to get the 4.5V, but don't know how to get the
0.5V without using resistors, op-amps, etc.

>Any ideas?

>Thanks in advance,

>Alvaro Deibe.
>

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