TDA8926 Datasheet, PDF (23/32 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
45
handbook, halfpage
G
(dB)
40
MLD615
35
(1)
30
(2)
25
(3)
20
10
10²
10³
10⁴
10⁵
fi (Hz)
V_P = ±21 V; V_i = 100 mV; R_s = 10 kΩ/C_i = 330 pF.
(1) 1 × 8 Ω BTL.
(2) 2 × 8 Ω SE.
(3) 2 × 4 Ω SE.
Fig.21 Gain as a function of input frequency.
45
handbook, halfpage
G
(dB)
40
35
30
25
MLD616
(1)
(2)
(3)
20
10
10²
10³
10⁴
10⁵
fi (Hz)
V_P = ±21 V; V_i = 100 mV; R_s = 0 Ω.
(1) 1 × 8 Ω BTL.
(2) 2 × 8 Ω SE.
(3) 2 × 4 Ω SE.
Fig.22 Gain as a function of input frequency.
0
handbook, halfpage
SVRR
(dB)
−20
MLD617
−40
(1)
−60
(2)
(3)
−80
−100
10
10²
10³
10⁴
10⁵
fi (Hz)
V_P = ±21 V; V_ripple(p-p) = 2 V.
(1) Both supply lines in antiphase.
(2) Both supply lines in phase.
(3) One supply line rippled.
Fig.23 Supply voltage ripple rejection as a function
of input frequency.
handbook, h⁰alfpage
SVRR
(dB)
−20
MLD618
−40
(1)
−60
(2)
(3)
−80
−100
0
1
2
3
4
5
Vripple(p-p) (V)
V_P = ±21 V.
(1) f_ripple = 1 kHz.
(2) f_ripple = 100 Hz.
(3) f_ripple = 10 Hz.
Fig.24 Supply voltage ripple rejection as a function
of ripple voltage (peak-to-peak value).
2002 Oct 10
23