TDA8922 Datasheet, PDF (28/36 Pages) NXP Semiconductors – 2 x 25 W class-D power amplifier

Philips Semiconductors
2 × 25 W class-D power amplifier
Objective specification
TDA8922
handboo¹k⁰, ⁰h⁰alfpage
Vres _(rms)
(mV)
800
MGX345
600
400
200
0
100
200
300
400
500
600
fclk (kHz)
V_P = ±20 V; R_L = 8 Ω.
Fig.34 PWM residual voltage as a function of clock
frequency.
handbook, ⁵h⁰alfpage
Po
(W)
40
MGX343
30
20
10
0
100
200
300
400
500
600
fclk (kHz)
V_P = ±20 V; R_L = 8 Ω; f_i = 1 kHz; THD + N = 10%.
Fig.35 Output power as a function of clock
frequency.
10
handbook, halfpage
Vo
(V) ¹
10 ^−1
MGX348
10 ^−2
10 ^−3
10 ^−4
10 ^−5
10 ^−6
0
1
2
3
4
5
6
VMODE (V)
V_i = 100 mV; f_i = 1 kHz.
Fig.36 Output voltage as a function of mode
selection voltage.
2003 Mar 20
120
handbook, halfpage
S/N
(dB)
100
MGX349
80
(1)
(2)
60
40
20
0
10 ^−2
10 ^−1
1
10
10²
10³
Po (W)
V_P = ±20 V; R_s = 5.6 kΩ.; filter: 20 kHz AES17
(1) 2 × 8 Ω SE.
(2) 1 × 8 Ω BTL.
Fig.36 Signal-to-noise ratio as a function of output
power.
28