TPA6030A4

SLOS395A – DECEMBER 2002 – REVISED JANUARY 2003

www.ti.com

6

VOLUME CONTROL

Table 1 shows the functionality of the 32-step volume control. The voltage difference between trip levels is 2.66% of 5VREF,

and the difference between gain steps is 2.53 dB.

Table 1. Volume Control

VOLTAGE ON VOLUME PIN AS A

PERCENTAGE OF 5VREF

SPEAKER VOLUME

(dB)

HEADPHONE VOLUME

(dB)

0–10

–80.00

–86.00

10–12.6

–40.00

–46.00

12.6–15.2

–37.47

–43.47

15.2–18

–34.93

–40.93

18–20.6

–32.40

–38.40

20.6–23.4

–29.87

–35.87

23.4–26

–27.33

–33.33

26–28.6

–24.80

–30.80

28.6–31.4

–22.27

–28.27

31.4–34

–19.73

–25.73

34–36.6

–17.20

–23.20

36.6–39.4

–14.67

–20.67

39.4–42

–12.13

–18.13

42–44.6

–9.60

–15.60

44.6–47.2

–7.07

–13.07

47.2–50

–4.53

–10.53

50–52.6

–2.00

–8.00

52.6–55.4

0.53

–5.47

55.4–58

3.07

–2.93

58–60.6

5.60

–0.40

60.6–63.4

8.13

2.13

63.4–66

10.67

4.67

66–68.6

13.20

7.20

68.6–71.4

15.73

9.73

71.4–74

18.27

12.27

74–76.6

20.80

14.80

76.6–79.4

23.33

17.33

79.4–82

25.87

19.87

82–84.6

28.40

22.40

84.6–87.4

30.93

24.93

87.4–90

33.47

27.47

90–100

36.00

30.00

Refer to the section entitled Volume Control Description in the Application Information section of this data sheet for more

details regarding the use of the volume control.