TDA8924TH datasheet(13/35 Pages) PHILIPS

13 / 35 page

2003 Jul 28

Philips Semiconductors

Objective speciﬁcation

× 120 W class-D power ampliﬁer

TDA8924

14 DYNAMIC AC CHARACTERISTICS (STEREO AND DUAL SE APPLICATION)

VP = ±24 V; RL =2 Ω; fi = 1 kHz; fosc = 310 kHz; RsL < 0.1 Ω (note 1); Tamb =25 °C; measured in Fig.9; unless

otherwise speciﬁed.

Notes

1. RsL = series resistance of inductor of low-pass LC filter in the application.

2. Output power is measured indirectly; based on RDSon measurement.

3. Total harmonic distortion is measured in a bandwidth of 22 Hz to 22 kHz. When distortion is measured using a lower

order low-pass filter a significantly higher value is found, due to the switching frequency outside the audio band.

Maximum limit is guaranteed but may not be 100 % tested.

4. Output power measured across the loudspeaker load.

5. Vripple =Vripple(max) = 2 V (p-p); fi = 100 Hz; Rs =0 Ω.

6. Vripple =Vripple(max) = 2 V (p-p); fi = 1 kHz; Rs =0 Ω.

7. B = 22 Hz to 22 kHz; Rs =0 Ω; maximum limit is guaranteed but may not be 100 % tested.

8. B = 22 Hz to 22 kHz; Rs =10kΩ.

9. B = 22 Hz to 22 kHz; independent of Rs.

10. Po = 1 W; Rs =0 Ω; fi = 1 kHz.

11. Vi =Vi(max) = 1 V (RMS); maximum limit is guaranteed but may not be 100 % tested.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

output power

RL =4 Ω; VP = ±27 V; THD = 0.5 %; note 2 −

−

RL =4 Ω; VP = ±27 V; THD = 10 %; note 2

−

RL =3 Ω; VP = ±27 V; THD = 0.5 %; note 2 −

−

RL =3 Ω; VP = ±27 V; THD = 10 %; note 2

−

115

−

RL =2 Ω; VP = ±24 V; THD = 0.5 %; note 2 −

−

RL =2 Ω; VP = ±24 V; THD = 10 %; note 2

−

120

−

THD

total harmonic distortion

Po = 1 W; note 3

fi = 1 kHz

−

0.05

−

fi = 10 kHz

−

0.07

−

Gv(cl)

closed loop voltage gain

−

efﬁciency

Po = 125 W; note 4

−

SVRR

supply voltage ripple

rejection

operating; fi = 100 Hz; note 5

−

operating; fi = 1 kHz; note 6

−

mute; fi = 100 Hz; note 5

−

standby; fi = 100 Hz; note 5

−

Z

i

input impedance

−

Ω

Vn(o)

noise output voltage

operating; Rs =0 Ω; note 7

−

200

400

µV

operating; Rs =10kΩ; note 8

−

230

−µV

mute; note 9

−

220

−µV

αcs

channel separation

note 10

−

∆G

v

channel unbalance

−−

1dB

Vo(mute)

output signal in mute

note 11

−−

400

µV

CMRR

common mode rejection

ratio

Vi(CM) = 1 V (RMS)

−

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