International Rectifier IRAUDAMP18, Reference Design

Page: 6 / 14

www.irf.com Page 6 of 13
IRAUDAMP18 REV
1.0
Frequency Response
Test Conditions:
VBus = 31V
Set Output = 1V
Load Impedance = 4 ohms
Color Sweep Trace Line Style Thick Data Axis Comment
1 1 Red Solid 2 Anlr.Level A Left Ch1 4ohm SP 25V
1 2 Blue Solid 2 Anlr.Level B Left Ch2 4ohm SP 25V
-10
+4
-8
-6
-4
-2
+0
+2
d
B
r
A
20 200k 50 100 200 500 1k 2k 5k 10k 20k 50k 100k
Hz
Noise Floor
Test Conditions:
VBus = 31V
Load Impedance = 4 ohms
No Input Signal
Color Sweep Trace Line Style Thick Data Axis Comment
1 1 Red Solid 2 Fft.Ch.1 Ampl Left Ch1
1 2 Blue Solid 2 Fft.Ch.2 Ampl Left Ch2
-140
+20
-120
-100
-80
-60
-40
-20
+0
d
B
V
10 20k 20 50 100 200 500 1k 2k 5k 10k
Hz
Fig 3
Fig 4