TDA7496SA

4/13

APPLICATION SUGGESTIONS

The recommended values of the external components are those shown on the application circuit of figure 1.

Different values can be used, the following table can help the designer.

Figure 1. Application Circui

COMPONENT

SUGGESTION

VALUE

PURPOSE

LARGER THAN

SUGGESTION

SMALLER THAN

SUGGESTION

R1

300K

Volume Control Circuit

Larger volume regulation

time

Smaller volume regulation

time

R2

10K

Mute time constant

Larger mute on/off time

Smaller mute on/off time

P1

50K

Volume Control Circuit

C1

1000

µF

Supply voltage bypass

Danger of oscillation

C2

470nF

Input DC decoupling

Lower low frequency cutoff Higher low frequency cutoff

C3

470nF

Input DC decoupling

Lower low frequency cutoff Higher low frequency cutoff

C4

470

µF

Ripple rejection

Better SVR

Worse SVR

C5

100nF

Volume control time

constant

Larger volume regulation

time

Smaller volume regulation

time

C6

1000

µF

Output DC decoupling

Lower low frequency cutoff Higher low frequency cutoff

C7

1

µF

Mute time constant

Larger mute on/off time

Smaller mute on/off time

C8

1000

µF

Output DC decoupling

Lower low frequency cutoff Higher low frequency cutoff

C9

100nF

Supply voltage bypass

Danger of oscillation

VOLUME

OP AMP

+

-

MUTE/STBY

PROTECTIONS

1

C2 470nF

INR

30K

VOLUME

OP AMP

+

-

30K

C8 1000

µF

C6 1000

µF

C7

1

µF

R2 10K

5

C3 470nF

INL

8

S_GND

2

14

9

10

12

34

R1 300K

C5

100nF

VOLUME

OUTR

S1 STBY

S2 MUTE

OUTL

11

C4 470

µF

SVR

7

D96AU493D

VAROUT_R

PW_GND

15

13

C9

0.1

µF

C1

1000

µF

PW_GND

VOL

P1

50K

LOG

+5V

TP1

PW_GND

PW_GND

S_GND

+5V

+5V

VAROUT_L