hbwhelp@micrel.com or (408) 955-1690 LVPECL Output I" />
參數(shù)資料
型號: SY89856UMG TR
廠商: Micrel Inc
文件頁數(shù): 4/13頁
文件大小: 0K
描述: IC CLK BUFF MUX 2:6 3GHZ 32-MLF
標(biāo)準(zhǔn)包裝: 1,000
系列: Precision Edge®
類型: 扇出緩沖器(分配),多路復(fù)用器
電路數(shù): 1
比率 - 輸入:輸出: 2:6
差分 - 輸入:輸出: 是/是
輸入: CML,LVDS,PECL
輸出: LVPECL
頻率 - 最大: 3GHz
電源電壓: 2.375 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤,32-MLF?
供應(yīng)商設(shè)備封裝: 32-MLF?(5x5)
包裝: 帶卷 (TR)
其它名稱: SY89856UMGTR
SY89856UMGTR-ND
Micrel, Inc.
SY89856U
Oct. 1, 2013
12
Revision 3.1
hbwhelp@micrel.com or (408) 955-1690
LVPECL Output Interface Applications
LVPECL has a high input impedance and a very low
output impedance (open emitter), and a small signal
swing which results in low EMI.
LVPECL is ideal for
driving 50
Ω and 100Ω-controlled impedance transmission
lines. There are several techniques for terminating the
LVPECL output: parallel termination-Thevenin equivalent,
parallel
termination
(3-resistor),
and
AC-coupled
termination. Unused output pairs may be left floating.
However, single-ended outputs must be terminated or
balanced.
Figure 10. Parallel Termination-Thevenin Equivalent
Note:
12. For 2.5V Systems: R1 = 250
Ω, R2 = 62.5Ω.
Figure 11. Parallel Termination (3-Resistors)
Notes:
13. Power-saving alternative to Thevenin termination.
14. Place termination resistors as close to destination inputs as possible.
15. Rb resistor sets the DC bias voltage, equal to VT.
16. For 2.5V systems, Rb = 19Ω.
Related Documentation
Part Number
Function
Datasheet Link
SY58035U
4.5GHz, 1:6 LVPECL Fanout Buffer with
2:1 MUX Input and Internal Termination
HBW Solutions
New Products and Applications
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