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TDA7438D

THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

STMicroelectronics 

TDA7438

Table 5 (continued)

Symbol

Parameter

Test Condition

SPEAKER ATTENUATORS

CRANGE Control Range

SSTEP Step Resolution

EA Attenuation Set Error

AV = 0 to -20dB

AV = -20 to -56dB

ET Tracking Error

AV = 0 to -24dB

AV = -24 to -47dB

VDC DC Step

adjacent attenuation steps

Amute Mute Attenuation

AUDIO OUTPUTS

VCLIP Clipping Level

d = 0.3%

RL Output Load Resistance

RO Output Impedance

VDC DC Voltage Level

GENERAL (Gain, Bass, Treble, Middle Controls Flat)

ENO Output Noise

All gains = 0dB;

BW = 20Hz to 20KHz flat

Et Total Tracking Error

AV = 0 to -24dB

(Volume + Speaker Attenuator)

AV= -24 to -47dB

AV = -47 to -79dB

S/N Signal to Noise Ratio

All gains 0dB; VO = 1VRMS ;

SC Channel Separation Left/Right

d

Distortion

AV = 0; VI = 1VRMS ;

BUS INPUT

VIL Input Low Voltage

VIH Input High Voltage

IIN Input Current

VIN = 0.4V

Min. Typ. Max. Unit

76

dB

0.5

1

1.5

dB

-1.5

0

1.5

dB

-2

0

2

dB

0

1

dB

0

2

dB

0

3

mV

80

100

dB

2.1

2.6

VRMS

2

KΩ

10

40

70

W

3.8

V

5

15

µV

0

1

dB

0

2

dB

0

3

dB

90

106

dB

80

100

dB

0.01 0.08

%

1

V

3

V

-5

5

µA

4/19

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