Datasheet

Characterization curves TDA7492P
10/26 Doc ID 15068 Rev 5
4 Characterization curves
The following characterizations were made using the SZ-LAB-TDA7492P demo board. The
layout is shown in Figure 19 on page 16. The LC filter for the 6 Ω load used 22 µH and
220 nF components, whilst that for the 8 Ω load used 33 µH and 220 nF.
4.1 Characterizations for 6 Ω loads with 18 V
Figure 3. Output power vs. supply voltage
Figure 4. THD at 1 kHz vs. output power
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
8910 11 12 13 14 15 16 17 18
Test conditions:
Vcc = 8 to 18 V,
RL = 6 Ω,
Rosc= 39 kΩ,Cosc = 100 nF,
f = 1 kHz,
Gv = 30 dB,
Tamb = 25r C
Specification limit:
Typical:
Vcc =18 V, RL = 6 Ω
Po = 25 W @THD = 10%
Po = 20 W @THD = 1%
THD = 1%
THD = 10%
Output power (W)
Supply voltage (V)
THD (%)
0.005
10
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
200m 30500m 1 2 5 10 20
Test conditions:
Vcc = 18 V,
RL = 6 Ω,
Rosc= 39 kΩ,Cosc = 100 nF,
f = 1 kHz,
Gv = 30 dB,
Tamb = 25r C
Specification limit:
Typical:
Po = 25 W @THD = 10%
Output power (W)