Negative voltage reference with LM385 - HOW?

[branek]

negative voltage reference

HOW TO DO THAT!


thanx in advance!

 

[cedance]

negative reference voltage

hi,

what technology does it use? TTL or ECL like that. i think only ECL logic has a negative reference voltage. for it to not enter the saturation region. that is all i am able to resolve abt this problem. but, anyother person could help with this question. seems a good question.

regards,
Arun.

 

[C-Man]

negative voltage reference ic

I think you could use an OP Amp to invert the voltage, but this solution will drop more current from the supply and you need positive and negative supply.

best regards

 

[ME]

negative output voltage reference

This is very simple.
Just connect a MAX826 to your LM385 output:
**broken link removed**

 

[ME]

lm385

This is very simple.
Just connect a MAX826 to your LM385 output:
**broken link removed**

Be aware, there is an error in this application note.
The application note is about MAX828, but at the schematic it says MAX826.
Just use a MAX828, there is no IC called MAX826, it's just a typing error.

MAX828: **broken link removed**

 

[ME]

positive and negative voltage reference

You can also use these devices similar to Maxim MAX828:
Sipex SP6828: www.sipex.com/products/pdf/sp6828_6829.pdf
ON Semiconductor MAX828: https://www.onsemi.com/site/products/summary/0,4450,MAX829,00.html
National Semiconductor LM828: www.national.com/pf/LM/LM828.html
Analog Devices ADM8828: www.analog.com/productSelection/pdf/ADM8828_9_a.pdf
Microchip (TelCom Semiconductor) TCM828: www.microchip.com/1010/pline/analog/anicateg/power/charpump/tcxxxx/tcm828/index.htm