TDA8922 PHILIPS [NXP Semiconductors], TDA8922 Datasheet - Page 28

• Manufacturer Part Number: TDA8922
• Description: 2 x 25 W class-D power amplifier
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
2003 Mar 20
handbook, halfpage
handbook, halfpage
V res(rms)
2
V
Fig.34 PWM residual voltage as a function of clock
V
Fig.36 Output voltage as a function of mode
(mV)
P
i
V o
(V)
= 100 mV; f
1000
10
10
10
10
10
10
= 20 V; R
800
600
400
200
10
25 W class-D power amplifier
0
1
1
2
3
4
5
6
100
0
frequency.
selection voltage.
L
i
= 1 kHz.
= 8 .
1
200
2
300
3
400
4
f clk (kHz)
V MODE (V)
500
5
MGX345
MGX348
600
6
28
handbook, halfpage
handbook, halfpage
V
Fig.35 Output power as a function of clock
V
(1) 2
(2) 1
Fig.36 Signal-to-noise ratio as a function of output
S/N
(dB)
P
P
(W)
P o
= 20 V; R
= 20 V; R
120
100
50
40
30
20
10
80
60
40
20
0
0
10
100
8
8
frequency.
2
power.
SE.
BTL.
L
s
= 5.6 k .; filter: 20 kHz AES17
= 8 ; f
10
200
1
(1)
(2)
i
= 1 kHz; THD + N = 10%.
300
1
400
10
Objective specification
f clk (kHz)
500
10
TDA8922
2
P o (W)
MGX343
MGX349
600
10
3