参数资料
型号: TMDS251PAGRG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 多路复用及模拟开关
英文描述: 3-CHANNEL, AUDIO/VIDEO SWITCH, PQFP64
封装: GREEN, PLASTIC, TQFP-64
文件页数: 7/28页
文件大小: 751K
代理商: TMDS251PAGRG4
www.ti.com
APPLICATION INFORMATION
Supply Voltage
TMDS Inputs
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
250
500
750
1000
1250
1500
1750
2000
f-Frequency-MHz
Loss-dB
spec
EQ=Low
3m30 AWGcable
SLLS852 – AUGUST 2007
The TMDS251 is powered up with two different power sources. One is 3.3-V VCC for the TMDS circuitry, and the
other is 5-V VDD for HPD, DDC, and most of the control logic. It is recommended to provide the same 3.3-V
power source to the TMDS circuitry of the TMDS251 and its output termination voltage. This minimizes the
leakage current from the ESD protection circuitry. When the digital television (DTV) is in standby mode operation,
the same common 3.3-V power source can be turned on or off. Either way will minimize the leakage current in
the device, and in the receiver connected at the output where the termination is integrated.
Selectable frequency response equalization circuitries are provided to all twelve differential input to support short
range and long range cable connections. The frequency response compensation curves and target cable losses
are shown in Figure 14 and Figure 15.
Figure 14. Frequency Response Compensation Curve at EQ = L
Copyright 2007, Texas Instruments Incorporated
15
Product Folder Link(s): TMDS251
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