what's the output impedance of a LM6171?

D

deskmate88

Member

Joined 2003

2003-01-04 6:48 pm

#1

• 2003-01-04 6:48 pm

• #1

From the data sheet, the open loop output impedance is around 15ohm.

However, how does this change when the LM6171 is use as a simple inverting amplifier with a 1K2 feedback resistor?

(Used after the DAC current output to do the I/V conversion and amplify the voltage.)

Thanks

 

hitsware

Member

Joined 2002

miller-music.one/

2003-01-04 8:54 pm

#2

• 2003-01-04 8:54 pm

• #2

for practical purposes 0 ohm as long as you don't try to draw too much current.......

 

D

deskmate88

Member

Joined 2003

2003-01-05 4:38 am

#3

• 2003-01-05 4:38 am

• #3

thanks

As I am designing a passive filter after the opamp, can I assume the output impedance is zero? Because the filter compoments' values do depends on this output impedance.