AD844 as a common base stage in the I/V converter

[Extreme_Boky]

Hi Jan,

The 50 ohms input impedance is not influenced by power supply voltage; I agree with this. I referred to input impedance as being the problem and the increase in power supply voltage as possible solutions to overcome high distortions. It is my wording....

I also wouldn't expect bias current to change with power supply voltage...

.....however, there's one section in AD844 (very limited) spec sheet suggesting that mirrors saturate at 10mA input current at + - 15V supply. Why would they specify the power supply voltage here if the mirrors' bias is fixed?

How did you figure the 3 Mohms output resistance at pin 5?

Regards,
Boky

 

[s3tup]

You can both halve the input impedance of 50ohm and output impedance - by using two 844 in paralel Wanna go for 12ohm input impedance? Throw a quad of these

Yes, old topic. But nice I/V here.

 

[padamiecki]

Hi
where are the files?
could anyone send link for them?
thank you in advance

 

[QSerraTico_Tico]

Hi
where are the files?
could anyone send link for them?
thank you in advance

http://www.google.nl/url?q=http://w...S48AcQ&usg=AFQjCNHutYh5kPtyMZXUBa6dSka_ADPnnA

 

[padamiecki]

thank you!