TDA8928ST datasheet(17/23 Pages) PHILIPS

17 / 23 page

2004 May 05

Philips Semiconductors

Preliminary speciﬁcation

Power stage 2 x 10 or 1 x 20 W class-D

audio ampliﬁer

TDA8928J

15.5

Curves measured in reference design

handbook, halfpage

MGX383

10−2

10−1

110

102

THD

+ N

(%)

102

10−1

10−2

10−3

Po (W)

(2)

(1)

(3)

Fig.9 THD + N as function of output power.

× 8 Ω SE; VP = ±12.5 V.

(1) 6 kHz.

(2) 1 kHz.

(3) 100 Hz.

handbook, halfpage

MGX384

102

103

104

105

102

10−1

10−3

10−2

fi (Hz)

THD

+ N

(%)

(1)

(2)

Fig.10 THD + N as function of frequency.

× 8 Ω SE; VP = ±12.5 V.

(1) Po =10W.

(2) Po =1W.

handbook, halfpage

010

100

2468

(%)

Po (W)

MGX385

Fig.11 Efficiency as function of output power.

× 8 Ω SE; VP = ±12.5 V; fi = 1 kHz.

handbook, halfpage

(4)

MGX386

SVRR

(dB)

−60

−50

−30

−40

−20

−10

fi (Hz)

102

103

104

105

(2)

(1)

(3)

Fig.12 SVRR as function of frequency.

VP = ±12.5 V; Vripple(p-p) =2V.

(1) Both supply lines in phase.

(2) One supply line (VSS) rippled.

(3) One supply line (VDD) rippled.

(4) Both supply lines in antiphase.

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