TDA8926 查看數據表（PDF） - Philips Electronics

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TDA8926

Power stage 2 × 50 W class-D audio amplifier

Philips Electronics 

Philips Semiconductors

Power stage 2 × 50 W class-D audio

amplifier

Preliminary specification

TDA8926

13 AC CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Single-ended application; note 1

Po

output power

THD

total harmonic distortion

Gv(cl)

η

closed-loop voltage gain

efficiency

Mono BTL application; note 5

Po

output power

THD

total harmonic distortion

Gv(cl)

η

closed loop voltage gain

efficiency

RL = 8 Ω; VP = ±25 V

THD = 0.5%

THD = 10%

RL = 8 Ω; VP = ±30 V

THD = 0.5%

THD = 10%

RL = 4 Ω; VP = ±21 V

THD = 0.5%

THD = 10%

Po = 1 W; note 3

fi = 1 kHz

fi = 10 kHz

Po = 30 W; fi = 1 kHz; note 4

RL = 8 Ω; THD = 0.5%

RL = 8 Ω; THD = 10%

Po = 1 W; note 3

fi = 1 kHz

fi = 10 kHz

Po = 30 W; fi = 1 kHz; note 4

25(2) 30

−

W

30(2) 37

−

W

−

40

−

W

−

52

−

W

30(2) 40

−

W

40(2) 50

−

W

−

0.01 0.05 %

−

0.1 −

%

29

30

31

dB

−

94

−

%

70(2) 80

−

W

80(2) 100 −

W

−

0.01 0.05 %

−

0.1 −

%

35

36

37

dB

−

94

−

%

Notes

1. VP = ±25 V; RL = 8 Ω; 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.7; 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 22 kHz. 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.

4. Efficiency for power stage; output power measured across the loudspeaker load.

5. VP = ±21 V; RL = 8 Ω; fi = 1 kHz; fosc = 310 kHz; Rs = 0.1 Ω (series resistance of filter coil); Tamb = 25 °C; measured

in reference design (BTL application) shown in Fig.7; unless otherwise specified.

2002 Oct 10

11

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