5/11

TDA7490L

*: Po = measured across the load using the following inductor: COIL58120 MPPA 2 (magnectics) TURNS= 20

∅ 1 mm

(1) L = 15µH, C = 470nF

(3)

∆Gv is intended with R2, R17, R5, R9 1% precision

(4) Fsw = 0.25 · (1/(300ns + R13 · (C17 + 76pF) . 0.85)

Table 5. Electrical Characteristics

Ω; Demod. filter L = 30µH, C = 220nF; f = 1KHz; fsw = 200kHz;

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Supply Range

±10

±25

V

Total Quiescent Current

∞ no LC filter

70

120

mA

Output Offset Voltage

-150

+150

mV

Output Power

THD = 10%

THD= 1%

20

16

W

W

Output Power in Bridge

Configuration

Ω

THD = 10%

THD=1%

40

32

W

W

Ω

THD = 10%

THD=1%

40

32

W

W

(1)

Output Power

Ω Vcc=±13.5V

THD = 10%

THD=1%

18

14.5

W

W

Maximum Dissipated Power

Ω

P

ο = 20W + 20W; THD = 10%

5.6

W

η

Efficiency (')

86

%

THD

Total Harmonic Distortion

Ω; Po = 1 W

0.1

%

Overcurrent Protection

Threshold

5

A

Thermal Shut-down Junction

Temperature

150

°C

Closed Loop Gain

29

30

31

dB

Gain Matching

-1

+1

dB

Total Input Noise

Ω

A Curve

f = 20Hz to 22KHz

7

12

µV

µV

Cross talk

55

dB

Input Resistance

20

30

k

Ω

SVR

Supply Voltage Rejection

60

dB

55

60

V

Rising and Falling Time

50

70

ns

Power Transistor on Resistance

0.4

0.8

Ω

Switching Frequency Range

100

200

230

KHz

MUTE & STAND-BY FUNCTIONS

Stand-by range

0

0 7

V

Mute Range

1.7

2.5

V

Play Range

4

5

V

Mute Attenuation

55

60

dB

Quiescent Current @ Stand-by

3

5

mA