TDA8946 Philips Semiconductors, TDA8946 Datasheet - Page 15

• Manufacturer Part Number: TDA8946
• Description: 2 x 15 W stereo Bridge Tied Load BTL audio amplifier
• Manufacturer: Philips Semiconductors

Philips Semiconductors
9397 750 06863
Product specification
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 F or greater – must be placed close to the device.
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.
idth
Fig 15. Printed-circuit board layout (single-sided); components view.
Rev. 02 — 14 March 2000
100 nF
17
1
1.5 nF
OUT2
OUT2
OUT1
OUT1
220 nF
220 nF
54 mm
10 F
2 x 15 W stereo BTL audio amplifier
1000 F
IN2
IN2
IN1
IN1
MUTE
ON
GND
V CC
© Philips Electronics N.V. 2000. All rights reserved.
MGU069
TDA8946J
56 mm
15 of 23