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STDEV003ABTR Datasheet

  • STDEV003ABTR

  • Adaptive 3.4 Gbps 3:1 TMDS/HDMI signal equalizer

  • 41頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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STDVE003A
Adaptive 3.4 Gbps 3:1 TMDS/HDMI signal equalizer
Features
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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: 鹵8 KV contact for all I/Os
Integrated open-drain I
2
C buffer for display
data channel (DDC)
5.3 V tolerant DDC and HPD I/Os
Lock-up free operation of I
2
C bus
0 to 400 kHz clock frequency for I
2
C 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
惟
input termination
Low ground bounce
Data and control inputs provide undershoot
clamp diode
Available in TQFP80 package
-40擄C to 85擄C operating temperature range
TQFP80
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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
惟
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.
Evaluation kit is available
Table 1.
Device summary
Order code
STDEV003ABTR
Operating temperature
-40擄C to 85擄C
Package
TQFP80
Packaging
Tape and reel
July 2008
Rev 3
1/41
www.st.com
41

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