Datasheet

TDA7491HV Characterization curves
Doc ID 14242 Rev 6 15/41
Figure 11. Power supply rejection ratio vs. frequency
Figure 12. Power dissipation and efficiency vs. output power
Figure 13. Closed-loop gain vs. frequency
-100
+0
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Test Condition:
Vcc =14V,
RL= 4 ohm,
Rosc = 39k˖, Cosc = 100nF,
Vin=0,
Gv=30dB,
0dB refers to 500mV,100Hz
Tamb=25ഒ
Ripple frequency=100Hz
Ripple voltage=500mV
Test Condition:
Vcc=14V,
RL=4 ohm,
Rosc=39k˖, Cosc=100nF,
f =1kHz,
Gv=30dB,
Tamb=25ഒ
3RZH U  GL V V L
S
DW L RQ  (I I L FL HQF
\
 YV 2XW
S
XW 
S
RZHU










    
2XW
S
XW 
S
RZHU 
S
HU  FKDQQHO 

:

(I I L FL HQF\  








3RZHU  GL VVL SDW L RQ  :
Vcc=14V
Rload=4ohm
Gain=30dB
f=1kHz
-5
+2
-4.5
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
-0
+0.5
+1
+1.5
d
B
r
A
20 30k50 100 200 500 1k 2k 5k 10k 20k
Hz
Test Condition:
Vcc =14V,
RL= 4 ohm,
Rosc = 39k˖, Cosc = 100nF,
F=1kHz,
0dB@f=1kHz,,Po=1w,
Gain=32dB
Tamb=25ഒ
Gain=32dB
Gain=32dBGain=22dB
Gain=26dB