Philips Semiconductors
Preliminary specification
Power stage 2 × 50 W class-D audio
amplifier
TDA8926
MLD619
MLD620
100
380
handbook, halfpage
handbook, halfpage
I
f
q
clk
(mA)
80
(kHz)
372
60
364
40
20
0
356
348
340
0
0
10
20
30
37.5
(V)
10
20
30
40
V
V
(V)
P
P
RL = open-circuit.
RL = open-circuit.
Fig.25 Quiescent current as a function of supply
voltage.
Fig.26 Clock frequency as a function of supply
voltage.
MLD621
MLD622
5
5
handbook, halfpage
handbook, halfpage
V
ripple
SVRR
(%)
(V)
4
4
3
3
(1)
(1)
2
2
1
(2)
1
0
(2)
0
10
−2
−1
2
2
3
4
10
10
1
10
10
10
10
10
P
(W)
f (Hz)
o
i
VP = ±21 V; 1500 µF per supply line; fi = 10 Hz.
(1) 1 × 4 Ω SE.
VP = ±21 V; 1500 µF per supply line.
(1) Po = 30 W into 1 × 4 Ω SE.
(2) Po = 15 W into 1 × 8 Ω SE.
(2) 1 × 8 Ω SE.
Fig.27 Supply voltage ripple as a function of output
power.
Fig.28 Supply voltage ripple rejection as a function
of input frequency.
2002 Oct 10
24
NXP [ NXP ]
