TDA7571 Datasheet, PDF (13/21 Pages) STMicroelectronics – STPDACsw - Fully digital high efficiency power audio amplifier

TDA7571
Electrical specifications
3.4
3.4.1
Notes on the electrical schematic shown in Figure 3 and 4
Main characteristics
● 2 channels single-ended or 1 channel bridge PWM amplifier
● Power output: see Table 5
● Figure 3: PLL option
● Figure 4: free running oscillator option
● Output voltage @ input = -6Bfs:
– Figure 3: 10Vrms (single ended) - 20Vrms (bridge)
– Figure 4: 9.5Vrms (single ended) - 19Vrms (bridge)
● Clip detector settled at THD=10%
● No dithering selected
The schematic is depicted showing the suggested structure of the printed circuit board
tracks (star points, high current path, components placement).
To avoid malfunctioning due to the parasitic inductance, short connections lengths are
recommended.
Table 6. Component characteristics
Components
(See schematic of Figure 3 & 3)
Minimum load:
2 x 4 Ohm single-ended
or 8 Ohm bridge
(2 x 65W / 1 x 130W)
(power supply = ±25V)
P-MOS-L
P-MOS-R
N-MOS-L
N-MOS-R
Rp-N-L2
RP-P-L2
Rp-N-R2
Rp-P-R2
STP12PF06
STP14NF06
Not present
Minimum load:
2 x 2 Ohm single-ended
or 4Ohm bridge
(2 x 125W / 1 x 250W)
(power supply = ±25V)
2 x STP12PF06
in parallel
2 x STP14NF06
in parallel
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