TDA7404DTR datasheet(9/35 Pages) STMICROELECTRONICS

9 / 35 page

TDA7404

Electrical specifications

9/35

3.5

Electrical characteristics

Table 5.

Electrical characteristics

(VS =9 V; Tamb=25 °C; RL=10 kΩ; all gains = 0 dB; f = 1 kHz; unless otherwise specified)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Input selector

Rin

Input resistance

all single ended Inputs

100

130

VCL

Clipping level

2.20

2.60

VRMS

SIN

Input separation

100

GIN MIN Min. input gain

-1

GIN MAX Max. input gain

GSTEP

Step Resolution

0.5

1.5

VDC

DC Steps

Adjacent gain steps

-5

GMIN to GMAX

-10

Voffset

Remaining offset with AutoZero

0.5

P differential stereo inputs

Rin

Input resistance

(see Figure 3)

Differential

100

130

GCD

Gain

only at true differential

input

-0.75

0.75

-5

-6

-7

-11

-12

-13

CMRR

Common mode rejection ratio

VCM = 1 VRMS @ 1 kHz

VCM = 1 VRMS @ 10 kHz

eNO

Output noise @ speaker-outputs

20 Hz - 20 kHz, flat;

all stages 0 dB

Differential mono input

Rin

Input resistance

Differential

395673

CMRR

Common mode rejection ratio

VCM = 1 VRMS @ 1 kHz

VCM = 1 VRMS @ 10 kHz

Beep control

VRMS

Beep level

250

350

500

Beep frequency

fB1

740

781

820

fB2

1.48

1.56

1.64

kHz

fB3

1.7

1.8

1.9

kHz

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