Application Schematic; Koninklijke Philips Electronics N.v. 2004. All Rights Reserved - Philips TDA8920B Manual

2 x 100 w class-d power amplifier

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Philips Semiconductors

13.8 Application schematic

9397 750 13356

Preliminary data sheet

Notes to the application schematic:

•

A solid ground plane around the switching ampliﬁer is necessary to prevent emission.

•

100 nF capacitors must be placed as close as possible to the power supply pins of the

TDA8920BTH.

•

The internal heat spreader of the TDA8920BTH is internally connected to V

•

The external heatsink must be connected to the ground plane.

•

Use a thermal conductive electrically non-conductive Sil-Pad

of the TDA8920BTH and a small external heatsink.

•

The differential inputs enable the best system level audio performance with

unbalanced signal sources. In case of hum due to ﬂoating inputs, connect the

shielding or source ground to the ampliﬁer ground. Jumpers J1 and J2 are open on

set level and are closed on the stand-alone demo board.

Minimum total required capacity per power supply line is 3300 µF.

•

Rev. 01 — 1 October 2004

TDA8920B

2 × 100 W class-D power ampliﬁer

between the backside

20 of 34

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