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| TDA8925 Datasheet, PDF (9/23 Pages) NXP Semiconductors – Power stage 2 x 15 to 25Wclass-D audio amplifier | |||
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Philips Semiconductors
Power stage 2 x 15 to 25 W class-D
audio ampliï¬er
Product speciï¬cation
TDA8925
13 AC CHARACTERISTICS
VP = ±15 V; Tamb = 25 °C; unless otherwise speciï¬ed.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Single-ended application; note 1
Po
output power
THD
η
total harmonic distortion
efï¬ciency endstage
RL = 8 â¦
THD = 0.5 %
10(2) 12
â
W
THD = 10 %
14(2) 15
â
W
RL = 6 â¦
THD = 0.5 %
â
16
â
W
THD = 10 %
â
20
â
W
Po = 1 W; note 3
fi = 1 kHz
â
fi = 10 kHz
â
Po = 2 Ã 15 W; fi = 1 kHz; note 4 â
0.05 0.1 %
0.2 â
%
94
â
%
Notes
1. VP = ±15 V; RL = 8 â¦; fi = 1 kHz; fosc = 310 kHz; Rs = 0.1 ⦠(series resistance of filter coil); Tamb = 25 °C; measured
in reference design (SE application) shown in Fig.5; unless otherwise specified.
2. Indirectly measured; based on Rds(on) measurement.
3. Total Harmonic Distortion (THD) is measured in a bandwidth of 22 Hz to 20 kHz (AES 17 brickwall filter). When
distortion is measured using a low-order low-pass filter a significantly higher value will be found, due to the switching
frequency outside the audio band. Measured using the typical application circuit, given in Fig.5.
4. Efficiency for power stage.
2004 May 06
9
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