Standard application circuits

STA540

10/25

Doc ID 13907 Rev 6

3

Standard application circuits

Figure 3.

Quadraphonic

Figure 4.

Alternative single-ended speaker connection

Figure 5.

Dual bridge

Suggested applications:

4x 13 W into 2

Ω, at 15 V

4x 11 W into 4

Ω, at 18 V

4x 9 W into 2

Ω, at 12 V

4x 8 W into 4

Ω, at 16 V

4x 5 W into 4

Ω, at 12 V

1

2

3

4

5

6

7

89

10

11

12

13

14

15

1000 µF

220 nF

2200 µF

100 nF

10 µF

10 k

Ω

IN_1

OUT_1

VS

ST_BY

47 µF

2200 µF

OUT_2

2200 µF

OUT_3

2200 µF

OUT_4

220 nF

IN_2

220 nF

IN_3

220 nF

IN_4

STA540

1

470

μF

2

18

470

μF

19

*

The best audio performance is obtained with the configuration where each speaker

has its own DC blocking capacitor. However, if the application allows a little

degradation of the spatial image it is possible to connect a couple of speakers with

only one low-value DC blocking capacitor.

1

2

15

14

Suggested applications:

2x 38 W into 4

Ω, at 18 V, 1 kHz, 10% THD

2x 34 W into 8

Ω, at 22 V, 1 kHz, 10% THD

2x 24 W into 4

Ω, at 14.4 V, 1 kHz, 10% THD

2x 15 W into 8

Ω, at 16 V, 1 kHz, 10% THD

1

2

3

4

5

6

7

89

10

11

12

13

14

15

1000 µF

470 nF

100 nF

10 µF

10 k

Ω

IN_L

VS

ST_BY

47 µF

OUT_R

470 nF

IN_R

OUT_L

STA540