TDA7494 datasheet(3/12 Pages) STMICROELECTRONICS

3 / 12 page

ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

THD

Total Harmonic Distortion

PO = 1W; f = 1KHz; Gv = 26dB

0.4

Ipeak

Output Peak Current

(internally limited)

1.4

1.9

Top

Operating Temperature

°C

Vin

Input Signal

2.8

Vrms

Closed Loop Gain

Vol Ctrl > 4.5V

24.5

27.5

GvLine

Monitor Out Gain

RLOAD Mon =

∞

-3

-1.5

AMinVol

Attenuation at Min Volume

Vol Ctrl < 0.5V

0.6

MHz

Total Output Noise

f = 20Hz to 22KHz

Play, max volume

350

700

µV

f = 20Hz to 22KHz

Play, max attenuation

100

µV

f = 20Hz to 22KHz

Mute

µV

Slew Rate

µs

Input Resistance

22.5

Ω

RMon

Monitor Output Resistance

1.4

Ω

Rload Mon

Monitor Output Load

Ω

SVR

Supply Voltage Rejection

f = 1kHz; max volume

CSVR = 470

µA; VRIP = 1VRMS

f = 1kHz; max attenuation

CSVR = 470

µA; VRIP = 1VRMS

Thermal Muting

150

°C

Thermal Shut-down

160

°C

VST-BY

Stand-by threshold

2.3

2.5

2.7

VMUTE

Mute Threshold

2.3

2.5

2.7

Sel #1

Control Voltage

Input #1 selected

Sel #2

Control Voltage

Input #2 selected

2.3

2.7

Sel #3

Control Voltage

Input #3 selected

IqST-BY

Quiescent Current @ Stand-by

0.6

AMUTE

Mute Attenuation

IstbyBIAS

Stand-by bias current

Stand by on; VST-BY = 5V;

VMUTE = 5V;

150

µA

Play or Mute

µA

ImuteBIAS

Mute bias current

Mute

1.5

µA

Play

0.5

µA

IswitchBIAS

Switch bias current

Input #1 selected

-0.5

µA

Input #2 selected

µA

Input #3 selected

1.5

µA

TDA7494

3/12

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