TDA7490SA datasheet(6/13 Pages) STMICROELECTRONICS

6 / 13 page

2 Electrical characteristcs

TDA7490SA

6/13

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

2 : Fsw =

with R1 in K

Ω; Fsw in KHz R1

3 : Fsw =

with Fext, the frequency of the external oscillator

FSWR

Output Switching Frequency

Range

with Internal Oscillator (2)

140

250

KHz

with external Oscillator (3)

100

250

KHz

MUTE & STAND-BY FUNCTIONS

VST-BY

Stand-by range

0.7

VMUTE

Mute Range

1.7

2.5

VPLAY

Play Range

AMUTE

Mute Attenuation

IqST-BY

Quiescent Current @ Stand-by

1.5

Figure 3.

distortion vs output power

Figure 4.

output Power vs Supply Voltage

(single)

Table 3.

electrical characteristcs (Refer to the test circuit, VCC = ±13.5V; RL = 8Ω;

Demod. filter L = 33

µH, C = 220nF; f = 1KHz; R1 = 27kΩ; T

amb = 25°C unless otherwise

specified.)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

4810

-------------

Fsw

---

⎝⎠

⎛⎞ F

est

⋅

0.01

0.02

0.05

0.1

0.2

0.5

THD(%)

100m

200m

500m

Pout(W)

Vs=27V

Rl =8ohm

F=1KHz

Po(W)

+14

+30

+16

+18

+20

+22

+24

+26

+28

Vs(V)

Rl =8ohm

f =1KHz

THD=1%

THD=10%

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