TDA8926 Datasheet, PDF (25/32 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
10
handbook, halfpage
THD+N
(%)
1
10^−1
10^−2
MLD623
(1)
(2)
(3)
10^−3
100
200
300
400
V_P = ±21 V; P_o = 1 W in 2 × 8 Ω.
(1) 10 kHz.
(2) 1 kHz.
(3) 100 Hz.
500
600
fclk (kHz)
Fig.29 Total harmonic distortion plus noise as a
function of clock frequency.
handbook,⁵h⁰alfpage
Po
(W)
40
MLD624
30
20
10
0
100
200
300
400
500
600
fclk (kHz)
V_P = ±21 V; R_L = 2 × 8 Ω; f_i = 1 kHz; THD + N = 10%.
Fig.30 Output power as a function of clock
frequency.
150
handbook, halfpage
Iq
(mA)
120
MLD625
90
60
30
0
100
200
300
400
500
600
fclk (kHz)
V_P = ±25 V; R_L = open-circuit.
Fig.31 Quiescent current as a function of clock
frequency.
2002 Oct 10
1000
handbook, halfpage
Vr(PWM)
(mV)
800
MLD626
600
400
200
0
100
200
300
400
500
600
fclk (kHz)
V_P = ±25 V; R_L = 2 × 8 Ω.
Fig.32 PWM residual voltage as a function of clock
frequency.
25