STDVE003A_08 Datasheet, PDF (1/41 Pages) STMicroelectronics – Adaptive 3.4 Gbps 3:1 TMDS/HDMI signal equalizer

STDVE003A
Adaptive 3.4 Gbps 3:1 TMDS/HDMI signal equalizer
Features
■ Compatible with the high-definition multimedia
interface (HDMI) v1.3 digital interface
■ Conforms to the transition minimized
differential signaling (TMDS) voltage standard
on input and output channels
■ 340 MHz maximum clock speed operation
supports all video formats with deep color at
maximum refresh rates
■ 3.4 Gbps data rate per channel
■ Fully automatic adaptive equalizer
■ Single supply V_CC: 3.135 to 3.465 V
■ ESD: ±8 KV contact for all I/Os
■ Integrated open-drain I²C buffer for display
data channel (DDC)
■ 5.3 V tolerant DDC and HPD I/Os
■ Lock-up free operation of I²C bus
■ 0 to 400 kHz clock frequency for I²C bus
■ Low capacitance of all the channels
■ Equalizer regenerates the incoming attenu-
ated TMDS signal
■ Buffer drives the TMDS outputs over long PCB
track lengths
■ Low output skew and jitter
■ Tight input thresholds reduce bit error rates
■ On-chip selectable 50 Ω input termination
■ Low ground bounce
■ Data and control inputs provide undershoot
clamp diode
■ Available in TQFP80 package
■ -40°C to 85°C operating temperature range
■ Evaluation kit is available
Table 1. Device summary
Order code
Operating temperature
STDEV003ABTR
-40°C to 85°C
TQFP80
Description
The STDVE003A integrates a 4-channel 3.4 Gbps
TMDS equalizer and a 3:1 switch to select one of
the three HDMI ports. The 3-input HDMI ports can
be either external ports or internal sources. High-
speed data paths and flow-through pinout
minimize the internal device jitter and simplify the
board layout. The equalizer overcomes the
intersymbol interference (ISI) jitter effects from
lossy cables. The buffer/driver on the output can
drive the TMDS output signals over long
distances. In addition to this, STDVE003A
integrates the 50 Ω termination resistor on all the
input channels to improve performance and
reduce board space. The device can be placed in
a low-power mode by disabling the output current
drivers. The STDVE003A is ideal for advanced TV
and STB applications supporting HDMI/DVI
standard. The differential signal from the
HDMI/DVI ports can be routed through the
STDVE003A to guarantee good signal quality at
the HDMI receiver. Designed for very low skew,
jitter and low I/O capacitance, the switch
preserves the signal integrity to pass the stringent
HDMI compliance requirements.
Package
TQFP80
Packaging
Tape and reel
July 2008
Rev 3
1/41
www.st.com
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