Electrical specifications

TDA7439

6/23

Speaker attenuators

Control range

70

76

82

dB

Step resolution

0.5

1

1.5

dB

Attenuation set error

-1.5

0

1.5

dB

-2

0

2

dB

DC step

Adjacent attenuation steps

0

3

mV

Mute attenuation

80

100

dB

Audio outputs

Clipping level

d = 0.3%

2.1

2.6

Vrms

Output load resistance

2

k

Ω

Output impedance

10

40

70

Ω

3.5

3.8

4.1

V

General

Output noise

All gains = 0 dB;

BW = 20 Hz to 20 kHz flat

515

µV

Total tracking error

0

1

dB

0

2

dB

S/N

Signal to noise ratio

All gains 0 dB,

95

106

dB

Channel separation, left/right

80

100

dB

dDistortion

0.01

0.08

%

Bus input

Input low voltage

1

V

Input high voltage

3

V

Input current

-5

0

5

µA

Output voltage SDA

acknowledge

0.4

0.8

V

1.

For bass, mid-range and treble response: the center frequency and the response quality can be set by the

external circuitry.

Table 5.

Electrical characteristics (continued)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit