TDA7490LSA Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

TDA7490LSA

15W +15W Stereo Class-D Amplifier

STMicroelectronics 

2 Electrical characteristcs

TDA7490LSA

Table 3.

Symbol

electrical characteristcs (Refer to the test circuit, VCC = ±14.5V; RL = 6Ω;

Demod. filter L = 33 µH, C = 220nF; f = 1KHz; R1 = 27kΩ; Tamb = 25°C unless otherwise

specified.)

Parameter

Test Condition

Min. Typ. Max. Unit

FSW Switching Frequency

FSWR

Output Switching Frequency

Range

Internal Oscillator

with Internal Oscillator (2)

with external Oscillator (3)

180 200 220 KHz

140

250 KHz

100

250 KHz

MUTE & STAND-BY FUNCTIONS

VST-BY Stand-by range

VMUTE Mute Range

VPLAY Play Range

AMUTE Mute Attenuation

IqST-BY Quiescent Current @ Stand-by

0

0.7

V

1.7

2.5

V

4

5

V

60

dB

1.5

2

mA

Note: 1 : PO = measured across the load using the following inductor: SUMIDA RCH-108-330K

2 : Fsw = 4----8---1---0-- + 23 with R1 in KΩ; Fsw in KHz R1

R1

3

:

Fsw =

Fsw

=

⎛

⎝

14--⎠⎞

⋅ Fest with Fext, the frequency

of the

external oscillator

Figure 3. distortion vs output power

THD(%)

10

1

0.1

Vs=+/- 13.5V

Rl =8ohm

F = 1KHz

0.01

100m 200m 500m 1 2

Pout(W)

5 10

Figure 4. output power vs supply voltage

(single)

16

Pout (W)

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

+14

Rload=8 ohm

f = 1KHz

+16

+18

+20

+22

Vsupply (V)

THD= 10%

THD= 1%

+24

+26

+28 +30

6/13

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