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TDA8922 Datasheet, PDF (15/36 Pages) NXP Semiconductors – 2 x 25 W class-D power amplifier
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Philips Semiconductors
2 × 25 W class-D power amplifier
Objective specification
TDA8922
8. B = 22 Hz to 22 kHz; independent of Rs.
9. Po = 1 W; Rs = 0 Ω; fi = 1 kHz.
10. Vi = Vi(max) = 1 V (RMS); maximum limit is guaranteed, but may not be 100% tested.
15 DYNAMIC AC CHARACTERISTICS (MONO BTL APPLICATION)
VP = ±15 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.
SYMBOL
PARAMETER
Po
output power
THD
total harmonic distortion
Gv(cl)
η
SVRR
closed loop voltage gain
efficiency
supply voltage ripple rejection
Zi
Vn(o)
input impedance
noise output voltage
Vo(mute)
CMRR
output signal in mute
common mode rejection ratio
CONDITIONS
RL = 8 Ω; VP = ±15 V; note 2
THD = 0.5%
THD = 10%
Po = 1 W; note 3
fi = 1 kHz
fi = 10 kHz
Po = 50 W; fi = 1 kHz; note 4
operating; note 5
fi = 100 Hz
fi = 1 kHz
mute; fi = 100 Hz; note 5
standby; fi = 100 Hz; note 5
operating
Rs = 0 Ω; note 6
Rs = 10 kΩ; note 7
mute; note 8
note 9
Vi(CM) = 1 V (RMS)
MIN. TYP. MAX. UNIT
37
40
−
W
46
50
−
W
−
0.015 0.05 %
−
0.02 −
%
35
36
37
dB
85
90
−
%
−
49
−
dB
36
44
−
dB
−
49
−
dB
−
80
−
dB
22
34
−
kΩ
−
280 560 µV
−
300 −
µV
−
280 −
µV
−
−
500 µV
−
75
−
dB
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 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); 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 = 10 kΩ.
8. B = 22 Hz to 22 kHz; independent of Rs.
9. Vi = Vi(max) = 1 V (RMS); fi = 1 kHz; maximum limit is guaranteed, but may not be 100% tested.
2003 Mar 20
15
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