參數(shù)資料
型號(hào)： CLC012
廠商： National Semiconductor Corporation
英文描述： Adaptive Cable Equalizer for ITU-T G.703 Data Recovery
中文描述： 自適應(yīng)電纜均衡器的ITU - T符合G.703數(shù)據(jù)恢復(fù)
文件頁(yè)數(shù)： 11/18頁(yè)
文件大小： 567K
代理商： CLC012
Layout and Measurement
(Continued)
Troubleshooting with scope probes can affect the equaliza-
tion. For high data rates, use a
low capacitance probe
with
less than 2 pF probe capacitance. Evaluation boards and lit-
erature are available for quick prototyping and evaluation of
the CLC012 Adaptive Cable Equalizer. The CLC012 con-
tains CMOS devices and operators should
use grounding
straps when handling
the parts.
Figure 9 shows the CLC012’s internal power supply routing.
Bypass V
CC
(pin 4) by:
Monolithic capacitor of about 0.1 μF placed less than 0.1”
(3mm) from the pin
Tantalum capacitor of about 6.8 μF for large current sig-
nal swings placed as close as convenient to the CLC012
To minimize ringing at the CLC012’s inputs, place a 100
re-
sistor in series with the input. This resistor reduces induc-
tance effects.
Several layout techniques can improve high speed perfor-
mance:
Keep input, output and AEC traces well separated
Use balanced input termination’s
Avoid routing traces close to the CLC012’s input trace
Maintain common return points for components
Use guard traces
The input lines of the CLC012 use a 100
series resistors at
the input pins. This decreases the inductive effects internal
to the part to reduce ringing on fast rise and fall times. Refer
to the evaluation board layout for further suggestions on lay-
out for the CLC012 Adaptive Equalizer.
EQUALIZATION CURVE
The CLC012 Adaptive Cable Equalizer has a maximum
equalization response as shown in Figure 10 This response
may be obtained by forcing
>
0.5V differentially at the AEC
pins.
CABLE EMULATION BOXES
Some cable emulation boxes will not mimic cables correctly.
When evaluating the CLC012, it is strongly recommended
that actual cable be used to determine the various perfor-
mance parameters.
Typical Applications
COAXIAL CABLE RECEIVER (Page 1)
The CLC012 equalizer application shown on page 1 will
equalize a variety of coaxial cables up to lengths that attenu-
ate the signal by 40 dB at 200 MHz. The application shows
the proper connection for a single cable driven with a
DS100145-28
FIGURE 8. Typical Measurement Block
DS100145-29
FIGURE 9. Power Package Routing Fixture
DS100145-30
FIGURE 10. Maximum Equalization Response
11
www.national.com
相關(guān)PDF資料
PDF描述
CLC012AJE Adaptive Cable Equalizer for ITU-T G.703 Data Recovery
CLC014AJE Adaptive Cable Equalizer for High-Speed Data Recovery
CLC014 Adaptive Cable Equalizer for High-Speed Data Recovery(應(yīng)用于高速數(shù)據(jù)恢復(fù)的可調(diào)電纜均衡器)
CLC016ACQ Data Retiming PLL with Automatic Rate Selection
CLC016AJQ Data Retiming PLL with Automatic Rate Selection
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CLC012_03 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adaptive Cable Equalizer for ITU-T G.703 Data Recovery
CLC012AJE 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adaptive Cable Equalizer for ITU-T G.703 Data Recovery
CLC012AJE/NOPB 功能描述:IC CABLE EQUALIZER ADAPT 14SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 應(yīng)用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤(pán)（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁(yè)面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2
CLC012AJE-TR13/NOPB 功能描述:IC CABLE EQUALIZER ADAPT 14-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 應(yīng)用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤(pán)（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁(yè)面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2
CLC014 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adaptive Cable Equalizer for High-Speed Data Recovery
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