TDA8929T Datasheet, PDF (29/36 Pages) NXP Semiconductors – Controller class-D audio amplifier

Philips Semiconductors
Controller class-D audio amplifier
Preliminary specification
TDA8929T
handbook, h⁰alfpage
SVRR
(dB)
−20
MLD617
−40
(1)
−60
(2)
(3)
−80
−100
10
10²
10³
10⁴
10⁵
fi (Hz)
V_P = ±25 V; V_ripple = 2 V (p-p) with respect to GND:
(1) Both supply lines in anti-phase.
(2) Both supply lines in phase.
(3) One supply line rippled.
Fig.30 SVRR as a function of input frequency.
0
handbook, halfpage
SVRR
(dB)
−20
MLD618
−40
(1)
−60
(2)
(3)
−80
−100
0
1
2
3
4
5
Vripple (V)
V_P = ±25 V; V_ripple with respect to GND:
(1) f_ripple = 1 kHz.
(2) f_ripple = 100 Hz.
(3) f_ripple = 10 Hz.
Fig.31 SVRR as a function of V_ripple (p-p).
100
handbook, halfpage
Iq
(mA)
80
60
MLD619
40
20
0
0
10
20
30
37.5
VP (V)
R_L = open.
Fig.32 Quiescent current as a function of supply
voltage.
380
handbook, halfpage
fclk
(kHz)
372
364
MLD620
356
348
340
0
10
20
30
40
VP (V)
R_L = open.
Fig.33 Clock frequency as a function of supply
voltage.
2001 Dec 11
29