TDA8561 Просмотр технического описания (PDF) - Philips Electronics

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TDA8561

2×24 W BTL or 4×12 W single-ended car radio power amplifier

Philips Electronics 

Philips Semiconductors

2 × 24 W BTL or 4 × 12 W single-ended

car radio power amplifier

Mode select switch

To avoid switch-on plops, it is advised to keep the amplifier

in the mute mode during >100 ms (charging of the input

capacitors at pins 1, 3, 15 and 17.

The circuit in Fig.11 slowly ramps up the voltage at the

mode select switch pin when switching on and results in

fast muting when switching off.

handbook, halfpage VP

10 kΩ

47 µF

Product specification

TDA8561Q

100 Ω

mode

select

switch

100 kΩ

MGA708

10 2

THD

(%)

10

Fig.11 Mode select switch circuitry.

MGA709

1

(1)

10 1

(2)

(3)

10 2

10 2

10 1

1

(1) f = 10 kHz.

(2) f = 1 kHz.

(3) f = 100 Hz.

10

Po (W)

10 2

Fig.12 Total harmonic distortion as a function of output power; VP = 14.4 V, RL = 4 Ω.

1999 Jun 30

14

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