TDA8924 Datasheet, PDF(14/35 Page) NXP Semiconductors – 2 x 120 W class-D power amplifier

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TDA8924 Datasheet, PDF (14/35 Pages) NXP Semiconductors – 2 x 120 W class-D power amplifier

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Philips Semiconductors

2 Ã 120 W class-D power ampliï¬er

Objective speciï¬cation

TDA8924

15 DYNAMIC AC CHARACTERISTICS (MONO BTL APPLICATION)

VP = Â±24 V; RL = 4 â¦; fi = 1 kHz; fosc = 310 kHz; RsL < 0.1 â¦ (note 1); Tamb = 25 Â°C; measured in Fig.9; unless

otherwise speciï¬ed.

SYMBOL

PARAMETER

output power

THD

total harmonic distortion

Gv(cl)

Î·

SVRR

closed loop voltage gain

efï¬ciency

supply voltage ripple

rejection

ï£´Ziï£´

Vn(o)

input impedance

noise output voltage

Vo(mute)

CMRR

output signal in mute

common mode rejection

ratio

CONDITIONS

RL = 3 â¦; VP = Â±20 V; THD = 0.5 %; note 2

RL = 3 â¦; VP = Â±20 V; THD = 10 %; note 2

RL = 4 â¦; VP = Â±20 V; THD = 0.5 %; note 2

RL = 4 â¦; VP = Â±20 V; THD = 10 %; note 2

RL = 4 â¦; VP = Â±24 V; THD = 0.5 %; note 2

RL = 4 â¦; VP = Â±24 V; THD = 10 %; note 2

Po = 1 W; note 3

fi = 100 Hz

fi = 1 kHz

fi = 10 kHz

Po = 240 W; note 4

operating; fi = 100 Hz; note 5

operating; fi = 1 kHz; note 6

mute; fi = 100 Hz; note 5

standby; fi = 100 Hz; note 5

operating; Rs = 0 â¦; note 7

operating; Rs = 10 kâ¦; note 8

mute; note 9

note 10

Vi(CM) = 1 V (RMS)

MIN. TYP.

160

205

135

175

200

240

0.015

36 44

22 34

280

300

280

MAX. UNIT

0.05 %

kâ¦

560 ÂµV

ÂµV

500 ÂµV

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 low

order low-pass filter a significant higher value will be 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 â¦.

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

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

8. B = 22 Hz to 22 kHz; Rs = 10 kâ¦.

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

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

2003 Jul 28

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