[Diy_efi] wide band O2's

[WopOnTour]

MessageWouldn't it depend on what ASIC was chosen to provide nurnst and pumping cell current control and AC-DC measurement? The electro-chemical intricacies of the zirconium based sensing element haven't really changed, just the controllers ability to derive a relative O2 concentration from the pump current while maintaining a target nurnst DCV and temperature via the heater control.
I was told the PLX is using the Bosch CJ110 or CJ125 ASIC (trying to get confirmation of that from PLX) It's been known that these ASICS do not require routine calibration as they derive a trim solution based on the sensor calibration resistance. (But then again, I could have my head up my arse)
Here's a link to the CJ110 but I couldn't find one for the CJ120 or CJ125
http://www.semiconductors.bosch.de/pdf/CJ110_Tech_Summary_extended.pdf
Regards
WopOnTour 
  ----- Original Message ----- 
  From: gary 
  To: diy_efi at diy-efi.org 
  Sent: Tuesday, July 05, 2005 5:15 PM
  Subject: Re: [Diy_efi] wide band O2's


  I thot digital was 'state of the art'.  Isn't PLX analog?  
  I question the accuracy.

  GAS

    ----- Original Message ----- 
    From: Brian McMahan 
    To: diy_efi at diy-efi.org 
    Sent: Tuesday, July 05, 2005 10:42 AM
    Subject: RE: [Diy_efi] wide band O2's


    If you want state of the art you should try the PLX R-500. It's the 

    best I've ever used.

    www.plxdevices.com 






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