參數資料
型號： SY58621LMG
廠商： MICREL INC
元件分類： 通信及網絡
英文描述： Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback
中文描述： SPECIALTY TELECOM CIRCUIT, QCC24
封裝： 4 X 4 MM, LEAD FREE, MLF-24
文件頁數： 13/19頁
文件大?。?/td> 308K
代理商： SY58621LMG
Micrel, Inc.
SY58621L
January 2006
13
M9999-012006-B
hbwhelp@micrel.com
or (408) 955-1690
PRBS Discussion
LOS Testing
The LOS function is tested with a 2
7
-1 PRBS (Pseudo
Random Bit Stream) data-pattern. A PRBS data-
pattern of 2
-1 is used because it is a good
approximation to an 8b10b-encoded NRZ data
stream. 8b10b encodes 8 bits of data and replaces it
with 10 bits of symbol. The extra bits are added to
improve transition density and the BER (Bit Error
Rate) of the system.
Deterministic Jitter Testing and the K28.5 Pattern
The K28.5 (11000001010011111010) and 2
23
-1 PRBS
data-patterns are used to characterize DJ because
both data patterns have lower spectral frequency
content which provides a best approximation to
scrambled NRZ data streams.
Random Jitter Testing and the K28.7 Pattern
The K28.7 (1111100000…) data pattern is used to
measure RJ since the pattern is free of DJ. In
addition, because the K28.7 data-pattern can be used
to compare the T
N
(N
TH
period) to the T
0
(1
st
period),
low frequency jitter components can be accumulated.
Power Supply Filtering
Although the SY58621L is fully differential, it is
recommended that the power supplies are filtered as
shown in Figure 4.
Figure 4. Power Supply Filtering Scheme
Item
C1, C2, C3, C23
Description
0.1
μ
F Capacitor
C4, C5, C6, C22
0.01
μ
F Capacitor
L1, L2, L3
1.2
μ
H Ferrite Bead Inductor
Table 1. Bill of Materials
相關PDF資料
PDF描述
SY58621LMGTR Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback
SY58626L DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
SY58626LMH DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
SY58626LMHTR DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
SY58627L DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control
相關代理商/技術參數
參數描述
SY58621LMG TR 功能描述:總線收發(fā)器 4.25Gbps Transceiver w/ CML/LVPECL Outputs (I Temp, Green) RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
SY58621LMGTR 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback
SY58626L 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Transmit Buffer with
SY58626L_10 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Transmit Buffer with
SY58626LMH 功能描述:總線發(fā)射器 6.4Gbps Transmitter w/ Pre-emphasis (Green) RoHS:否 制造商:Texas Instruments 數據速率:135 Mpps 接口: 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 70 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-56 封裝:Reel
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