TDA7490SA

1 Typical application and pin description

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1

Typical application and pin description

1.1

typical application

Figure 1.

typical application and test circuit for single and split supply

1.2

pin description

Figure 2.

pin connection

DRIVER

DRIVER

REGULATOR

OSCILLATOR

PWM STAGE

PWM STAGE

C3 330nF

INPUT1

EXTERNAL

CLK

INPUT2

C5

1nF

IN1

REFERENCE

TRIANGLE1

TRIANGLE2

IN2

R1

27K

T2

C1

100nF

C9

100nF

C10

100nF

C18

560pF

R7

100

C16

33nF

C13

100nF

C12

100nF

C15 2200

µF

C14 2200

µF

C19

560pF

R8

100

C17

33nF

C11

100nF

C4 330nF

C6

1nF

R4 30K

R6 10K

R5 10K

C8

2.2

µF

STBY

STBY/MUTE

+5V

-5V

VREG

OUT2

+VCC2

BOOTSTRAP2

OUT1

BOOSTRAP1

LOUDSPEAKER1

LOUDSPEAKER2

MUTE

GND

R2

22K

C2

330pF

R3

22K

C7

330pF

L1 30

µ

L2 30

µ

C20

220nF

C21

220nF

D99AU1066B

6

8

5

13

15

12

4

14

7

16

10

19

17

9

1

2

18

3

/GND

(**)

(**)

1000

µF

1000

µF

(*)

R9

1K

R10

1K

(*) Only for single Supply Solution

(**) To add externally the PCB for Single Supply

1

2

3

4

5

6

7

D04AU1542

9

10

11

8

13

14

15

16

17

18

19

12

OUT1

+VCC2

OUT2

BOOT2

VREG

IN2

+5V

TRIANGLE2

GND

N.C.

-VCC

-VCC

TRIANGLE1

-5V

REFERENCE

IN1

ST-BY/MUTE

BOOT1

+VCC1