O2 sensor pullup resistor values?

[rr]

Check nat-semi.com for the LM1964. It is the O2 Sensor interface
amplifier designed for this purpose. At least the purpose of interfacing
the O2 into additional electronics.

BobR.


Peter Florance wrote:

> That's what I had in mind. Some decent rail to rail op amp
>
> Thanks
> Peter
>
> -----Original Message-----
> From:   rr [SMTP:RRauscher at nni.com]
> Sent:   Thursday, December 06, 2001 8:50 AM
> To:     diy_efi at diy-efi.org
> Subject:        Re: O2 sensor pullup resistor values?
>
> You may want to use two O2 amps (National semi) and then sum
> the outputs together. In my travels w/GM ecms I've never seen any
> pullups or bias resistors on the O2 sensor signal line.
>
> BobR.
>
> Peter Florance wrote:
>
> > Anyone have any idea of typical ECU pullup resistor (to ~ .45V)  values for
> > O2 sensors inputs? I'm trying to make a analog circuit to average 2 sensors
> > for my L-jet box and would like to incorporate it in the front end of the
> > buffers.
> > Also interested in any comments regarding averaging O2 sensors for dual
> > exhaust systems and idle performance (in line 6 engine)
> > Thanks in advance
> >
> > Peter Florance
> > 81 euro 528i w/ 3.5L
> >
> > ----------------------------------------------------------------------------

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