ad5539jq Analog Devices, Inc., ad5539jq Datasheet - Page 10

• Manufacturer Part Number: ad5539jq
• Description: Ultrahigh Frequency Operational Amplifier
• Manufacturer: Analog Devices, Inc.

AD5539
Figure 25. A Gain of 3 Follower with Both Lead and Lag
Compensation
Adding a lag capacitor (Figure 27) will greatly reduce the
midband and low frequency noise gain of the circuit while sacri-
ficing only a small amount of bandwidth as shown in Figure 28.
Figure 27. A Gain of 3 Follower Circuit with Both C
and R
Figure 26. Response of the Gain of 3 Follower Circuit
LAG
Compensation
LEAD
–10–
Figure 28. Response of the Gain of 3 Follower with C
C
These same principles may be applied when capacitor C
connected to Pin 12 (Figure 29). Figure 30 shows the band-
width of the gain of 3 amplifier for various values of R
be seen from these response plots that a high noise gain is still
needed to achieve a reasonably flat response (the smaller the
Figure 29. A Gain of 3 Follower Circuit with C
Compensation Connected to Pin 12
Figure 30. Response of the Gain of 3 Follower Circuit with
C
LAG
LEAD
and R
Connected to Pin 12
LAG
LEAD
LAG
LEAD
REV. B
. It can
LEAD
is
,