2004 May 05 9
Philips Semiconductors Preliminary specification
Power stage 2 x 10 or 1 x 20 W class-D
audio amplifier TDA8928J13 ACCHARACTERISTICS
VP=±12.5 V; Tamb=25°C; unless otherwise specified.
Notes
1. VP=±12.5 V; RL=8Ω; fi= 1 kHz; fosc = 310 kHz; Rs= 0.1 Ω (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
distortionis 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.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Single-ended application; note 1
Pooutput power RL=8Ω
THD = 0.5 % 7(2) 8−W
THD = 10 % 9(2) 10 −W
RL=16Ω
THD = 0.5 % −4−W
THD = 10 % −5−W
THD total harmonic distor tion Po= 1 W; note 3
fi= 1 kHz −0.05 0.1 %
fi= 10 kHz −0.2 −%
ηefficiency endstage Po=2×10 W; fi= 1 kHz; note 4 −90 −%