Precision Edge SY58013U Micrel, Inc. M9999-063010 hbwhelp@micrel.com or (408) 955-1690 Figure 4. Para" />
參數(shù)資料
型號(hào): SY58051UMG TR
廠商: Micrel Inc
文件頁(yè)數(shù): 10/10頁(yè)
文件大?。?/td> 0K
描述: IC GATE CML UNIV I/O TERM 16-MLF
標(biāo)準(zhǔn)包裝: 1,000
系列: SY55
邏輯類(lèi)型: 可配置多功能
電路數(shù): 1
輸入數(shù): 2
施密特觸發(fā)器輸入: 無(wú)
輸出類(lèi)型: 差分
電源電壓: 2.3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 16-VFQFN 裸露焊盤(pán),16-MLF?
供應(yīng)商設(shè)備封裝: 16-MLF?(3x3)
包裝: 帶卷 (TR)
其它名稱(chēng): SY58051UMGTR
SY58051UMGTR-ND
9
Precision Edge
SY58013U
Micrel, Inc.
M9999-063010
hbwhelp@micrel.com or (408) 955-1690
Figure 4. Parallel Termination–Thevenin Equivalent
Note 1. For +2.5V systems: R1 = 250 ohms, R2 = 62.5 ohms
Note 2. For +3.3V systems: R1 = 130 ohms, R2 = 82 ohms
Figure 5. Three-Resistor “Y–Termination”
Note 1. Power-saving alternative to Thevenin termination.
Note 2. Place termination resistors as close to destination inputs as
possible.
Note 3. Rb resistor sets the DC bias voltage, equal to VT.
For +2.5V systems Rb = 39 ohms.
For +3.3V systems Rb = 46 ohms to 50 ohms.
Note 4. C1 is an optional bypass capacitor intended to compensate for
any
tr/tf mismatches.
OUTPUT TERMINATION RECOMMENDATIONS
LVPECL outputs have very low output impedance (open
emitter), and small signal swing which results in low EMI
(electro-magnetic interference). The LVPECL is ideal for
driving 50 ohms and 100 ohms controlled impedance
transmission lines. In addition, LVPECL is compatible for
driving standard PECL inputs since PECL inputs require only
100mV input swing. Further, there are several techniques
in terminating the LVPECL outputs, as shown in Figure 4
through 6.
Figure 6. Terminating Unused I/O
Note 1. Unused output (/Q) must be terminated to balance the output.
Note 2. For+2.5Vsystems: R1=250ohms,R2=62.5ohms,R3=1.25kohms,
R4 = 1.2k ohms.
For +3.3V systems: R1 = 130 ohms, R2 = 82 ohms, R3 = 1k ohms,
R4 = 1.6k
ohms.
Note 3. Unusedoutputpairs(Qand/Q)maybeleftfloating.
Part Number
Function
Data Sheet link
SY58011U
7GHz, 1:2 CML Fanout Buffer/Translator
http://www.micrel.com/product-info/prod/ucts/sy58011u.shtml
With Internal I/O Termination
SY58012U
5GHz, 1:2 LVPECL Fanout Buffer/Translator With
http://www.micrel.com/product-info/products/sy58012u.shtml
Internal Input Termination
SY58013U
6GHz, 1:2 Fanout Buffer/Translator w/400mV
http://www.micrel.com/product-info/products/sy58013u.shtml
LVPECL Outputs and Internal Input Termination
16-MLF Manufacturing Guidelines
www.amkor.com/products/notes_papers/mlf_AppNote_0902.
Exposed Pad Application Note
.pdf
M-0317
HBW Solutions
http://www.micrel.com/product-info/as/solutions.shtml
RElATED MICREl PRODUCTS AND SUPPORT DOCUMENTATION
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