all variable gains = 0dB, f = 1kHz, unless otherwise specified.)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

INPUT SELECTOR

Input Resistance

70

100

130

k

Ω

Clipping Level

d

≤ 0.3%

1.3

1.6

Vrms

Input Separation

70

90

dB

Input Mute Attenuation

70

95

dB

Mute DC Step

0.2

10

mV

MUTE AT AM INPUT (*)

Input Low Voltage

AM not selected

0.4

V

VOLUME CONTROL

Max. Gain

Note 2

30.5

32

33.5

dB

Max Attenuation

75

79

83

dB

Step Resolution

0.5

1

1.5

dB

Attenuation Set Error

G = +20 to -20dB

-1

0

+1

dB

G = -20 to -60dB

-2

2

dB

Tracking Error

G = +20 to -60dB

2

dB

DC Steps

Adjacent Attenuation Steps,

Range from 0 to -79dB

0.1

4

mV

From 0dB to -79dB

0.5

10

mV

LOUDNESS CONTROL

Control Range

14

15

16

dB

Step Resolution

0.5

1

1.5

dB

Internal Resistor

37

50

63

k

Ω

BASS CONTROL

Max. Bass boost

15.5

+18

20

dB

Max. Bass cut

-20

-18

-15.5

dB

Step Resolution

1

2

3

dB

Internal Feedback Resistance

48

65

82

k

Ω

TREBLE CONTROL

Control Range

±13

±14

±15

dB

Step Resolution

1

2

3

dB

SPEAKER ATTENUATORS

Control Range

36

37.5

39

dB

Step Resolution

From 0 to -24dB

0.5

1

1.5

dB

Output Mute Attenuation

70

90

dB

Attenuation Set Error

From 0 to -24dB

1

dB

DC Steps

Adjacent Attenuation Steps

0.1

4

mV

AUDIO OUTPUTS

Clipping Level

d = 0.3%

2

2.5

Vrms

Output Gain (fixed)

3.5

4

4.5

dB

Output Load Resistance

AC - connected

3

k

Ω

DC connected to GND

5

Output Load Capacitance

10

nF

Output Impedance

30

100

Ω

DC Voltage Level

3.7

4.0

4.3

V

(*) The mute function can be activated without using the I2C bus by grounding the AM input when AM is not selected. This causes the input

multiplexer to select the reference voltage instead of an input signal.

TDA7434

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