TDA7572 datasheet(20/64 Pages) STMICROELECTRONICS

20 / 64 page

Electrical specifications

TDA7572

20/64

Attenuation step size

INLEVEL1=0, INLEVEL0=0

0.5-0.25

0.5

0.5+

0.25

INLEVEL1=0, INLEVEL0=1

0.44-

0.25

0.44

0.44+

0.25

INLEVEL1=1, INLEVEL0=0

0.55-

0.25

0.55

0.55+

0.25

INLEVEL1=1, INLEVEL0=1

0.48-

0.25

0.48

0.48+

0.25

Gain Change ZC

comparator offset

(in the diff. – S.E. block)

offset

Observed at AOUT pin

ZC crossing must be detected

within 50mV of the actual zero

crossing,

-80

Gain Change ZC

comparator offset

(in the diff. – S.E. block)

offset

Observed at InvOut pin

ZC crossing must be detected

-220

+220

Mute

Mute attenuation

Mute pin voltage = Dgnd

Vin=1Vrms

Charge current

Mute Pin Voltage(57) = 1.5V

-30%

100

+30%

µA

Discharge current

Mute Pin Voltage(57) = 1.5V

-30%

100

+30%

µA

Mute threshold

Maximum voltage where we must

be in complete mute

1.5

Unmute threshold

2.5

Mute to unmute transition

voltage

0.2

0.3

0.42

Vol

IC in mute mode, FastMute=1

Iout=0

Digital

GND +

0.1

Voh

IC in unmute, Iout=0

VDIGITAL-

0.1

Fast mute Resistance

FASTMUTE=1

Vmutepin=1.5Volts

420

550

680

Ohm

Table 8.

Input stage

Symbol

Parameters

Test conditions

Min.

Typ.

Max.

Units

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