TDA7420 Ver la hoja de datos (PDF) - STMicroelectronics

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Fabricante

TDA7420

MULTIFUNCTION AUDIO PROCESSOR

STMicroelectronics 

TDA7420

ELECTRICAL CHARACTERISTICS (VS = 8.5V; Tamb = 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz;

unless otherwise specified, refer to the Test Circuit.)

Symbol

Parameter

INPUT SECTION

Differential Input Pins 52, 53, 54, 55

RI

Input Resistance

VCL

Clipping Level

CMRR Common Mode Rejection Ratio

GDIFF

Differential Gain

Stereo Input Pins 56, 57

RI

Input Resistance

VCL

Clipping Level

Quasi Differential Input Pins 58, 59,60

RI

Input Resistance

VCL

Clipping Level

Composite Input Pin 61

RI

Input Resistance

VCL

Clipping Level

MULTIPLEXER

RO

Output Resistance (pin 2,3)

GIMIN

Minimum Gain

GIMAX

Maximum Gain

GSTEP

Step Resolution

VDC

Dc Steps

VOLUME CONTROL

RI

Input Resistance (1, 64)

CMAX

Max Gain

AMAX

Max Attenuation

ASTEPC

Step Resolution Coarse

Attenuation

EA

Attenuation Set Error

ET

Tracking Error

VDC

DC Steps

SOFT MUTE

AMUTE

Mute Attenuation

tD

Delay Time

Test Condition

THD = 0.3%

Adjacent Gain Step

GMIN to GMAX

AV = 16 to -40dB

G =16 to -40dB

Adjacent Attenuation Steps

from 0dB to AMAX

CEXT = 22nF;

0 to -20dB;

I = IMAX

I = IMIN

Min.

37

2.0

45

-1

75

2.0

18

2.0

18

2.0

100

-1

14

0.5

-5

24

15

0.5

-1.5

-3

40

BASS CONTROL

CRANGE Control Range

+15

ASTEP

Step Resolution

0.5

RB

Internal Feedback Resistance

48

Typ.

50

2.5

55

0

100

2.5

25

2.5

25

2.5

200

0

15

1

1

2

33

16

63

1.0

0

0.1

0.5

50

1.0

23

+18

1

65

Max. Unit

63

KΩ

Vrms

dB

1

dB

125

KΩ

Vrms

32

KΩ

Vrms

32

KΩ

Vrms

300

Ω

1

dB

16

dB

1.5

dB

5

mV

mV

42

KΩ

17

dB

dB

1.5

dB

1.5

dB

2

dB

3

mV

5

mV

dB

ms

ms

+20

dB

1.5

dB

82

KΩ

4/29

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