TDA7385 datasheet(10/12 Pages) STMICROELECTRONICS

10 / 12 page

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.

TDA7385

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TDA7385 bảng dữ liệu(PDF) 10 Page - STMicroelectronics