TDA7348

Electrical characteristics

7/20

Soft mute

Mute attenuation

45

60

dB

ON delay time

0.7

1

1.7

ms

20

35

55

ms

OFF delay time

25

50

75

μA

1

μA

Soft mute threshold

1.5

2.5

3.5

V

Pull-up resistor (pin 22)

35

50

65

K

Ω

(pin 22) level high

Soft Mute active

3.5

V

(pin 22) level low

1

V

Bass control

15

18

20

dB

Max bass cut

-8.5

-10

-11.5

dB

Step resolution

1

2

3

dB

Internal feedback resistance

45

65

85

K

Ω

Treble control

±13

±14

±15

dB

Step resolution

1

2

3

dB

Speaker attenuators

35

37.5

40

dB

Step resolution

0.5

1.25

2.0

dB

Output mute attenuation

Data word = XXX11111

80

100

dB

Attenuation set error

1.25

dB

DC steps

Adjacent attenuation steps

0

3

mV

Audio output

Clipping level

d = 0.3%

2.1

2.6

Vrms

Output load resistance

2

K

Ω

Output impedance

30

100

W

DC voltage level

3.5

3.8

4.1

V

General

Supply voltage

6

9

10.2

V

Table 1.

Electrical characteristics (continued)

0dB); f = 1KHz. Refer to the test circuit, unless otherwise specified.

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit