English
Language : 

TDA8922 Datasheet, PDF (27/36 Pages) NXP Semiconductors – 2 x 25 W class-D power amplifier
◁
Philips Semiconductors
2 × 25 W class-D power amplifier
Objective specification
TDA8922
10
handbook, halfpage
Vripple(p-p)
(V)
8
MGX334
6
(1)
4
2
(2)
0
10 −2
10 −1
1
10
102
Po (W)
3000 µF per supply line; fi = 10 Hz.
(1) 1 × 4 Ω SE, VP = ±15 V.
(2) 1 × 8 Ω SE, VP = ±20 V.
Fig.30 Supply voltage ripple as a function of output
power.
10
handbook, halfpage
Vripple(p-p)
(V)
8
MGX335
6
4
(1)
2
(2)
0
10
102
103
104
fi (Hz)
3000 µF per supply line.
(1) Po = 10 W into 1 × 4 Ω SE, VP = ±15 V.
(2) Po = 10 W into 1 × 8 Ω SE, VP = ±20 V.
Fig.31 Supply voltage ripple as a function of input
frequency.
10
handbook, halfpage
THD + N
(%)
1
10 −1
10 −2
MGX342
(1)
(2)
(3)
10 −3
100
200
300
400
500
600
fclk (kHz)
VP = ±20 V; Po = 1 W into 8 Ω.
(1) 10 kHz.
(2) 1 kHz.
(3) 100 Hz.
Fig.32 THD + N as a function of clock frequency.
handbook1, 5h0alfpage
Iq
(mA)
120
MGX344
90
60
30
0
100
200
300
400
500
600
fclk (kHz)
VP = ±20 V; RL = ∞.
Fig.33 Quiescent current as a function of clock
frequency.
2003 Mar 20
27
 ▷