TDA7571

Electrical specifications

13/21

3.4

Notes on the electrical schematic shown in Figure 3 and 4

3.4.1

Main characteristics

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2 channels single-ended or 1 channel bridge PWM amplifier

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Power output: see Table 5

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Figure 3: PLL option

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Figure 4: free running oscillator option

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Output voltage @ input = -6Bfs:

–

Figure 3: 10Vrms (single ended) - 20Vrms (bridge)

–

Figure 4: 9.5Vrms (single ended) - 19Vrms (bridge)

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Clip detector settled at THD=10%

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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)

Minimum load:

2 x 2 Ohm single-ended

or 4Ohm bridge

(2 x 125W / 1 x 250W)

(power supply = ±25V)

P-MOS-L

P-MOS-R

STP12PF06

2 x STP12PF06

in parallel

N-MOS-L

N-MOS-R

STP14NF06

2 x STP14NF06

in parallel

Rp-N-L2

RP-P-L2

Rp-N-R2

Rp-P-R2

Not present

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