Introduction

STV6419

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Doc ID 014825 Rev 1

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Introduction

audio and video signals in any dual, non-full SCART application. It can be used in products

such as SD and HD set-top boxes or DVD/BD players and recorders for European markets.

It can be connected to four video DAC outputs of an MPEG decoder, allowing simultaneous

switching and driving of the composite and RGB signals, or the S-video signal only, to the

TV SCART output, as well as the composite signal to the VCR SCART output. Further, the

device provides the switching of the composite and RGB signals, or the S-video signals

only, from the VCR SCART to the TV SCART.

The STV6419 provides the minimum required set of features to support the dual-SCART

connector with significant cost reduction over existing solutions (such as STV6417 or

competition) and in line with a price-sensitive, soon-to-be-phased-out legacy topology, for

which set-top box manufacturers are no longer willing to pay a premium.

The STV6419 is one of the family of five, pin-compatible products (Figure 1) that complete

the new generation of audio and video switches and buffers from STMicroelectronics.

Together they cover, both technically and price-wise, the whole market spectrum from

mid-range SD retail (zapper set-top boxes or basic recorders) up to DVR HD operators

(set-top boxes or recorders with SD component output).

Features

Benefits

DC-coupled video inputs.

Reduces component count.

AC- and DC-coupled high-drive capability video

outputs (for 70-

Ω (minimum) loads).

Connects to any type of display and drives several

composite and RF modulator outputs without

external active components.

8-step selectable audio gain up to +28 dB,

supporting output of 3.1 V RMS (minimum).

Easy fine-tune of THD and SNR depending on

requirements, whilst matching any specific audio

output level, including China Cable, and saving

external op-amps.

Pin-compatibility with four other products.

Combines single-device space-saving (up to 50%)

benefits with commodity price/flexibility benefits to

allow a single PCB design covering the entire

market spectrum.

Pin-compatibility with STV6417AH.

Provides dual-source solution at no cost premium

in case of market shortage or sudden rise in

demand.

Pin-compatibility with STV6418AH.

Provides dual-source solution at no cost premium

in case of market shortage or sudden rise in

demand.