TDA8927TH datasheet(28/36 Pages) PHILIPS

28 / 36 page

2001 Dec 11

Philips Semiconductors

Objective speciﬁcation

Power stage 2

× 80 W class-D

audio ampliﬁer

TDA8927

handbook, halfpage

MLD621

10−1

10−2

Po (W)

Vripple

(V)

110

102

(1)

(2)

Fig.31 Supply voltage ripple as a function of output

power.

VP = ±25 V; 1500 µF per supply line; fi =10Hz:

(1) 1

× 4 Ω SE.

(2) 1

× 8 Ω SE.

handbook, halfpage

104

MLD622

102

103

fi (Hz)

SVRR

(%)

(1)

(2)

Fig.32 SVRR as a function of input frequency.

VP = ±25 V; 1500 µF per supply line:

(1) Po = 30 W into 1 × 4 Ω SE.

(2) Po = 15 W into 1 × 8 Ω SE.

handbook, halfpage

600

100

(3)

fclk (kHz)

THD

(%)

200

300

400

500

10−1

10−2

10−3

MLD623

(1)

(2)

Fig.33 THD + N as a function of clock frequency.

VP = ±25 V; Po = 1 W in 2 × 8 Ω:

(1) 10 kHz.

(2) 1 kHz.

(3) 100 Hz.

handbook, halfpage

100

600

200

(W)

fclk (kHz)

300

400

500

MLD624

Fig.34 Output power as a function of clock

frequency.

VP = ±25 V; RL =2 × 8 Ω; fi = 1 kHz; THD+N= 10%.

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