165 schematics and O2 circuit

[Ludis Langens]

"Marteney, Steven J." wrote:
> 
> I was looking at the 165 schematics at
> the O2 circuitry.  Looks to be a comparator.

Amplifier.

> Has "4.5" written inside the
> device.  Is this a gain value?  Example, (O2HI - O2LO) * 4.5 = Output
> voltage to ADC?

Yup.  The gain of 4.5 is built into the chip.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/

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