Electrical characteristics and test circuit

TDA7449

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DocID006317 Rev 5

2

Electrical characteristics and test circuit

Table 5. Electrical characteristics (refer to the test circuit Tamb = 25 °C, VS = 9 V,

RL= 10 k, RG = 600 , all controls flat (G = 0 dB), unless otherwise specified)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Supply

VS

Supply voltage

6

9

10.2

V

IS

Supply current

7

mA

SVR

Ripple rejection

60

90

dB

Input stage

RIN

Input resistance

100

k



VCL

Clipping level

THD = 0.3%

2

2.5

Vrms

SIN

Input separation

The selected input is

grounded through a 2.2 μ

capacitor

80

100

dB

Ginmin

Minimum input gain

-1

0

1

dB

Ginman

Maximum input gain

30

dB

Gstep

Step resolution

2

dB

Volume control

CRANGE

Control range

45

47

49

dB

AVMAX

Max. attenuation

45

47

49

dB

ASTEP

Step resolution

0.5

1

1.5

dB

EA

Attenuation set error

AV = 0 to -24 dB

-1.0

0

1.0

dB

AV = -24 to -47 dB

-1.5

0

1.5

dB

ET

Tracking error

AV = 0 to -24 dB

0

1

dB

AV = -24 to -47 dB

0

2

dB

VDC

DC step

adjacent attenuation steps

0

3

mV

from 0 dB to AV max

0.5

mV

Amute

Mute attenuation

80

100

dB

Bass control (1)

Gb

Control range

Max. boost/cut

+12.0

+14.0

+16.0

dB

BSTEP

Step resolution

1

2

3

dB

RB

Internal feedback resistance

18.75

25

31.25

K



Treble control (1)

Gt

Control range

Max. boost/cut

+13.0

+14.0

+15.0

dB

TSTEP

Step resolution

1

2

3

dB

Obsolete

Product(s)

- Obsolete

Product(s)