TDA8946J データシートの表示（PDF） - Philips Electronics

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TDA8946J

2 x 15 W stereo Bridge Tied Load (BTL) audio amplifier

Philips Electronics 

Philips Semiconductors

idth

TDA8946J

2 x 15 W stereo BTL audio amplifier

54 mm

56 mm

17

1

100 nF

OUT2−

OUT2+ + −

10 µF

220 nF

1.5 nF

ON

MUTE

IN2−

IN2+

IN1−

220 nF

IN1+

VCC

OUT1−

OUT1+

1000 µF GND

MGU069

Fig 15. Printed-circuit board layout (single-sided); components view.

14.1.2 Power supply decoupling

Proper supply bypassing is critical for low-noise performance and high supply voltage

ripple rejection. The respective capacitor locations should be as close as possible to

the device and grounded to the power ground. Proper power supply decoupling also

prevents oscillations.

For suppressing higher frequency transients (spikes) on the supply line a capacitor

with low ESR – typical 100 nF – has to be placed as close as possible to the device.

For suppressing lower frequency noise and ripple signals, a large electrolytic

capacitor – e.g. 1000 µF or greater – must be placed close to the device.

9397 750 06863

Product specification

The bypass capacitor on the SVR pin reduces the noise and ripple on the midrail

voltage. For good THD and noise performance a low ESR capacitor is recommended.

Rev. 02 — 14 March 2000

© Philips Electronics N.V. 2000. All rights reserved.

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