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LMH0303

更新时间： 2024-10-02 04:19:59
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器
页数 文件大小 规格书
14页 293K
描述
3 Gbps HD/SD SDI Cable Driver with Cable Detect

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LMH0303 数据手册

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PRELIMINARY  
July 10, 2008  
LMH0303  
3 Gbps HD/SD SDI Cable Driver with Cable Detect  
General Description  
Features  
The LMH0303 3 Gbps HD/SD SDI Cable Driver with Cable  
Detect is designed for use in SMPTE 424M, SMPTE 292M,  
SMPTE 344M, and SMPTE 259M serial digital video appli-  
cations. The LMH0303 drives 75Ω transmission lines (Belden  
1694A, Belden 8281, or equivalent) at data rates up to 2.97  
Gbps.  
SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE  
■
259M compliant  
Data rates to 2.97 Gbps  
■
■
■
■
Cable detect on output  
Loss of signal detect at input  
Output driver power down control  
The LMH0303 includes intelligent sensing capabilities to im-  
prove system diagnostics. The cable detect feature senses  
near-end termination to determine if a cable is correctly at-  
tached to the output BNC. Input loss of signal (LOS) detects  
the presence of a valid signal at the input of the cable driver.  
These sensing features may be used to alert the user of a  
system fault and activate a deep power save mode, reducing  
the cable driver's power consumption to 3 mW. These fea-  
tures are accessible via an SMBus interface.  
Typical power consumption: 130 mW in SD mode and  
155 mW in HD mode  
■
Power save mode typical power consumption: 4 mW  
■
■
■
■
■
■
■
■
Single 3.3V supply operation  
Differential input  
75Ω differential output  
Selectable slew rate  
Industrial temperature range: −40°C to +85°C  
16–pin LLP package  
The LMH0303 provides two selectable slew rates for SMPTE  
259M and SMPTE 424M / 292M compliance. The output am-  
plitude is adjustable ±10% in 5 mV steps via the SMBus.  
Footprint compatible with the LMH0302  
The LMH0303 is powered from a single 3.3V supply. Power  
consumption is typically 130 mW in SD mode and 155 mW in  
HD mode. The LMH0303 is available in a 16-pin LLP pack-  
age.  
Applications  
SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE  
259M serial digital interfaces  
■
The LMH0303 interfaces with National's LMH0356 for addi-  
tional system control and power consumption savings (see  
Typical Application).  
Digital video routers and switches  
■
■
Distribution amplifiers  
Typical Application  
30043203  
© 2008 National Semiconductor Corporation  
300432  
www.national.com  
1234567...14

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LMH0307GRX/NOPB TI

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 		3 Gbps HD/SD SDI Dual Output Cable Driver with Cable Detect 25-csBGA -40 to 85

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