TDA7383 Datasheet, PDF (10/12 Pages) STMicroelectronics – 4 x 30W QUAD BRIDGE CAR RADIO AMPLIFIER

TDA7383
such as output R-C cells. Due to the high number
of channels involved, this translates into a very
remarkable components saving if compared to
similar devices on the market.
To simplify pc-board layout designs, each ampli-
fier stage has its own power ground externally ac-
cessible (pins 2,8,18,24) and one supply voltage
pin for each couple of them.
Even more important, this makes it possible to
achieve the highest possible degree of separation
among the channels, with remarkable benefits in
terms of cross-talk and distortion features.
About the layout grounding, it is particularly im-
portant to connect the AC-GND capacitor (C5) to
the signal GND, as close as possible to the audio
inputs ground: this will guarantee high rejection of
any common mode spurious signals.
The SVR capacitor (C6) has also to be connected
to the signal GND.
Supply filtering elements (C7, C8) have naturally
to be connected to the power-ground and located
as close as possible to the Vs pins.
Pin 1, which is mechanically attached to the de-
vice’s tab, needs to be tied to the cleanest power
ground point in the pc-board, which is generally
near the supply filtering capacitors.
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