TDA8922TH datasheet(14/36 Pages) PHILIPS

14 / 36 page

2003 Mar 20

Philips Semiconductors

Objective speciﬁcation

× 25 W class-D power ampliﬁer

TDA8922

14 DYNAMIC AC CHARACTERISTICS (STEREO AND DUAL SE APPLICATION)

VP = ±20 V; RL =8 Ω; fi = 1 kHz; fosc = 310 kHz; RsL < 0.1 Ω (note 1); Tamb =25 °C; measured in Fig.10; unless

otherwise speciﬁed.

Notes

1. RsL is the 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); Rs =0 Ω.

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

7. B = 22 Hz to 22 kHz; Rs =10kΩ.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

output power

RL =8 Ω; VP = ±20 V; note 2

THD = 0.5%

−

THD = 10%

−

RL =8 Ω; VP = ±25 V; note 2

THD = 0.5%

−

THD = 10%

−

RL =4 Ω; VP = ±15 V; note 2

THD = 0.5%

−

THD = 10%

−

THD

total harmonic distortion

Po = 1 W; note 3

fi = 1 kHz

−

0.02

0.05

fi = 10 kHz

−

0.15

−

Gv(cl)

closed loop voltage gain

efﬁciency

Po = 25 W; fi = 1 kHz; note 4

−

SVRR

supply voltage ripple rejection

operating; note 5

fi = 100 Hz

−

fi = 1 kHz

−

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 6

−

200

400

µV

Rs =10kΩ; note 7

−

230

−µV

mute; note 8

−

220

−µV

αcs

channel separation

note 9

−

∆Gv

channel unbalance

−−

1dB

Vo(mute)

output signal in mute

note 10

−−

400

µV

CMRR

common mode rejection ratio

Vi(CM) = 1 V (RMS)

−

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