TDA8926 Datasheet, PDF (24/32 Pages) NXP Semiconductors – Power stage 2 x 50 W class-D audio amplifier

Philips Semiconductors
Power stage 2 × 50 W class-D audio
amplifier
Preliminary specification
TDA8926
handboo¹k,⁰h⁰alfpage
Iq
(mA)
80
60
MLD619
40
20
0
0
10
20
30
37.5
VP (V)
R_L = open-circuit.
Fig.25 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-circuit.
Fig.26 Clock frequency as a function of supply
voltage.
5
handb_Vo_ro_ipk,_ph_lealfpage
(V)
4
MLD621
3
(1)
2
1
(2)
010_−2
10^−1
1
10
10²
Po (W)
V_P = ±21 V; 1500 µF per supply line; f_i = 10 Hz.
(1) 1 × 4 Ω SE.
(2) 1 × 8 Ω SE.
Fig.27 Supply voltage ripple as a function of output
power.
5
handbook, halfpage
SVRR
(%)
4
MLD622
3
(1)
2
1
(2)
0
10
10²
10³
10⁴
fi (Hz)
V_P = ±21 V; 1500 µF per supply line.
(1) P_o = 30 W into 1 × 4 Ω SE.
(2) P_o = 15 W into 1 × 8 Ω SE.
Fig.28 Supply voltage ripple rejection as a function
of input frequency.
2002 Oct 10
24