18. Replace DAC xxxx
with DAC xxxx
![](images/20080802_42.jpg)
First removing the old parts - it's a hard to job to throw away a
working circuit.
![](images/20080804_02.jpg)
The settle node placed in the copper house. Massive DAC ground.
![](images/20080804_04.jpg)
DAC will come on sockets, allows to change the DAC and gives also a
change to test other types of DAC's.
![](images/20080806_01.jpg)
![](images/20080806_02.jpg)
Compensation - (order
changed, without description)
![](images/20080807_02.jpg)
![](images/20080807_05.jpg)
![](images/20080807_13.jpg)
![](images/20080807_03.jpg)
![](images/20080807_06.jpg)
![](images/20080807_14.jpg)
Capacitors in
Comparison
![](images/20080807_15.jpg)
First tests with
different types of OP amps
![](images/20080807_18.jpg)
Today I used my 7904A with the blue P11 Phosphor - I like changing the
scopes often.
Amplifier xxxx
![](images/1.jpg)
![](images/20080807_21.jpg)
Amplifer xxxx together with DAC xxxx
Load DAC exactly on first division
- settling time approximately 1.9 µs
-
7A26 in 20 MHz position - 500µV/DIV on settle node
Amplifier xxxx
![](images/2.jpg)
![](images/20080807_22.jpg)
Amplifier xxxx together with DAC xxxx
Load DAC exactly on first division
- settling time approximately 2.3 µs
-
7A26 in 20 MHz position - 500µV/DIV on settle node
Amplifier xxxx
![](images/3.jpg)
![](images/20080807_23.jpg)
Amplifier xxxx together with DAC xxxx
Load DAC exactly on first division
- settling time approximately 1.8 µs
-
7A26 in 20 MHz position - 500µV/DIV on settle node
"Under such a 16 Bit microscope you see
everything, with a standard oscilloscope you are blind".
back
![](../../images/amplifier_world_250.jpg)
Impressum
und Haftungsausschluss