STA540SA

Demonstration boards and applications suggestions

Doc ID 16066 Rev 2

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9.3

Mute function

If the mute function is required, it can be accessed on SVR (pin 8) as shown in Figure 39.

Figure 39.

Components for layout

VS = 10 to 16 V, VSVR: mute off ≥ 0.6 to 0.8, mute on ≥ 0.2 V

Using a different value for R1 than the suggested 3.3 k

Ω, results in two different situations:

R1 > 3.3 k

Ω:

–

Pop noise improved

–

Lower mute attenuation

R1 < 3.3 k

Ω:

–

Pop noise degradation

–

Higher mute attenuation

0.22

µF

1

DIAGNOSTICS

4

9

D05AU1617A

10

µF

10K

ST-BY

IN L

0.47

µF

5

IN BRIDGE

16

470

µF

8

17

1000

µF

100nF

3

VS

2

18

19

OUT L

10

11

12

OUT

BRIDGE

15

0.22

µF

IN R

OUT R

2200

µF

2200

µF

R1 3.3K

R2 10K

MUTE

5V

0

PLAY

STBY

Obsolete

Product(s)

- Obsolete

Product(s)