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參數(shù)資料
| 型號： | CLC014 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 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) |
| 中文描述： | 高自適應(yīng)電纜均衡器高速數(shù)據(jù)恢復(fù)（應(yīng)用于高速數(shù)據(jù)恢復(fù)的可調(diào)電纜均衡器） |
| 文件頁數(shù)： | 11/18頁 |
| 文件大小： | 519K |
| 代理商： | CLC014 |
Layout and Measurement
The printed circuit board layout for the CLC014 requires
proper high-speed layout to achieve the performance speci-
fications found in the datasheet. The following list contains a
few rules to follow:
1.
Use a ground plane.
2.
Decouple power pins with 0.1 μF capacitors placed
≤
0.1” (3mm) from the power pins.
3.
Design transmission strip lines from the CLC014’s input
and output pins to the board connectors.
4.
Route outputs away from inputs.
5.
Keep ground plane
≥
0.025” (0.06mm) away from the in-
put and output pads.
Figure 8 shows a block level measurement diagram, while
Figure 15on depicts a detailed schematic.Apseudo-random
pattern generator with low output jitter was used to provide a
NRZI pattern to create the eye diagrams shown in the
Typi-
cal Performance Characteristics
section.
Since most pattern generators have a 50
output imped-
ance, a translation can be accomplished using a CLC006
Cable Driver as an impedance transformer. A wide band-
width oscilloscope is needed to observe the high data rate
eye pattern. When monitoring a single output that is termi-
nated at both the equalizer output and the oscilloscope, the
effective output load is 37.5
. Consequently, the signal
swing is half that observed for a single-ended 75
termination.
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 CLC014 Adaptive Cable Equalizer. The CLC014 con-
tains CMOS devices and operators should
use grounding
straps when handling
the parts.
Figure 9 shows the CLC014’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 CLC014
To minimize ringing at the CLC014’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 CLC014’s input trace
DS100056-28
FIGURE 8. Typical Measurement Block
DS100056-29
FIGURE 9. Power Package Routing Fixture
C
www.national.com
11
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| CLC014_03 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adaptive Cable Equalizer for High-Speed Data Recovery |
| CLC014AJE | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:IC CABLE EQUALIZER HI SPEED SMD 制造商:Texas Instruments 功能描述:IC, ADAPTIVE CABLE EQUALIZER, SOIC-14, IC Function:Adaptive Cable Equalizer, Bri |
| CLC014AJE/NOPB | 功能描述:IC CABLE EQUALIZER ADAPTV 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 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2 |
| CLC014AJE/NOPB | 制造商:Texas Instruments 功能描述:Buffer / Driver / Receiver Logic IC |
| CLC014AJE-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 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2 |
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