STV6440 Datasheet, PDF (2/4 Pages) STMicroelectronics – Audio/video buffer and 6-channel SD/PS/HD video filter

Introduction
1
Introduction
STV6440
The STV6440 is an I²C-controlled integrated circuit for filtering and buffering audio and
video signals in any consumer electronics application with HD component and SD analog
outputs. It can be used in products such as HD set-top boxes or DVD/BD players and
recorders.
The STV6440 has a high level of integration and requires only the usual passive
components for decoupling and termination. The tiny package VFQFPN-28 ensures a small
footprint for the buffer circuits.
The STV6440 is one of the family of three, 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 HD component output).
Features
Benefits
DC-coupled video inputs.
Reduces component count.
AC- and DC-coupled high-drive capability video Connects to any type of display and drives several
outputs (for 70-Ω (minimum) loads).
composite and RF modulator outputs without
external active components.
Smart pop-noise manager.
Allows silent swap between active and standby
modes.
Selective standby command for audio and each As low as 4-mW standby consumption supporting
set of SD or HD video outputs.
compliance to 0.5-W standby requirements.
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 two 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.
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Doc ID 019027 Rev 1