6

Characterization curves

Unless otherwise stated, measurements were made under the following conditions:

VCC = 22 V, RI = 6 Ω, f = 1 kHz, Gv = 20.8 dB, ROSC = 33 kΩ, Gain = 20.8 dB and Tamb = 25 °C.

Note: Maximum output power must be derated according to case temperature.

Figure 8. Output power vs. supply voltage

Figure 9. Efficiency vs. output power

0

10

20

30

40

50

60

70

80

90

0

2

4

6

8

10 12 14 16 18 20 22 24 26 28 30 32

Pout per channel (W)

Vs = 20 V

Rl = 6 ohm

f = 1 kHz

Figure 10. THD vs. output power (f = 1 kHz)

0.001

10

0.002

0.005

0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10 m

50

20 m

50 m

100m 200m

500m

1

2

5

10

20

Vs = 20 V, Rl = 6 Ω, f = 1 kHz

Pout (W)

Figure 11. THD vs. output power (100 Hz)

0.001

10

0.002

0.005

0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10m

50

20m

50m

100 m 200 m

500 m

1

2

5

10

20

Vs = 20 V, Rl = 6 Ω, f = 100 Hz

Pout (W)

TDA7492PE

Characterization curves

DS10652 - Rev 3

page 13/19