參數(shù)資料
型號(hào)： SY58012UMI
廠商： MICREL INC
元件分類(lèi)： 時(shí)鐘及定時(shí)
英文描述： 5GHz, 1:2 LVPECL FANOUT BUFFER/TRANSLATOR WITH INTERNAL INPUT TERMINATION
中文描述： 58012 SERIES, LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), QCC16
封裝： 3 X 3 MM, MLF-16
文件頁(yè)數(shù)： 8/9頁(yè)
文件大?。?/td> 118K
代理商： SY58012UMI
8
Precision Edge
SY58012U
Micrel
Part Number
Function
Data Sheet Link
SY58011U
7GHz, 1:2 CML Fanout Buffer/Translator
With Internal Input Termnations
http://www.micrel.com/product-info/products/sy58011u.shtml
SY58012U
5GHz, 1:2 LVPECL Fanout Buffer/Translator
With Internal Input Termination
http://www.micrel.com/product-info/products/sy58012u.shtml
SY58013U
6GHz, 1:2 Fanout Buffer/Translator w/400mV
LVPECL Outputs and Internal Terminations
http://www.micrel.com/product-info/products/sy58013u.shtml
16-MLF
Manufacturing Guidelines
Exposed Pad Application Note
www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf
M-0317
HBW Solutions
http://www.micrel.com/product-info/as/solutions.shtml
RELATED MICREL PRODUCTS AND SUPPORT DOCUMENTATION
R2
82
R2
82
Z
O
= 50
Z
O
= 50
+3.3V*
+3.3V*
V
T
= V
CC
—
2V
R1
130
R1
130
+3.3V*
Figure 5. Parallel Termination-Thevenin Equivalent
Note 1.
Note 2.
For +2.5V systems: R1 = 250
, R2 = 62.5
For +3.3V systems: R1 = 130
, R2 = 82
Z = 50
Z = 50
50
50
50
+3.3V
+3.3V
source
destination
Rb
C1
0.01
μ
F
(optional)
Figure 6. Three-Resistor
“
Y
–
Termination
”
Note 1.
Note 2.
Note 3.
Power-saving alternative to Thevenin termination.
Place termination resistors as close to destination inputs as possible.
R
b
resistor sets the DC bias voltage, equal to V
T
.
For +2.5V systems R
b
= 19
.
For +3.3V systems R
b
= 46
to 50
.
C1 is an optional bypass capacitor intended to compensate for any
t
r
/t
f
mismatches.
Note 4.
LVPECL OUTPUT
+3.3V
+3.3V
Z
O
= 50
R2
82
+3.3V
+3.3V
R1
130
R1
130
R2
82
V
T
= V
CC
—
2V
Q
/Q
R4
1k
R3
1.6k
V
T
= V
CC
—
1.3V
Figure 7. Terminating Unused I/O
Note 1.
Note 2.
Unused output (/Q) must be terminated to balance the output.
For +2.5V systems: R1 = 250
, R2 = 62.5
, R3 = 1.25k
,
R4 = 1.2k
.
For +3.3V systems: R1 = 130
, R2 = 82
, R3 = 1k
, R4 = 1.6k
.
Unused output pairs (Q and /Q) may be left floating.
Note 3.
LVPECL output have very low output impedance (open
emitter), and small signal swing which results in low EMI.
LVPECL is ideal for driving 50
and 100
controlled
impedance transmission lines. There are several techniques
in terminating the LVPECL output, as shown in Figures 5
through 7.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SY58012UMI TR 功能描述:IC CLK BUFFER TRANSLA 1:2 16-MLF RoHS:否 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:Precision Edge® 標(biāo)準(zhǔn)包裝:1 系列:HiPerClockS™ 類(lèi)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:2:18 差分 - 輸入:輸出:是/無(wú) 輸入:CML，LVCMOS，LVPECL，LVTTL，SSTL 輸出:LVCMOS，LVTTL 頻率 - 最大:250MHz 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:32-LQFP 供應(yīng)商設(shè)備封裝:32-TQFP（7x7） 包裝:- 其它名稱(chēng):800-1923-6
SY58012UMITR 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:5GHz, 1:2 LVPECL FANOUT BUFFER/TRANSLATOR WITH INTERNAL INPUT TERMINATION
SY58013U 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:6GHz, 1:2 FANOUT BUFFER/TRANSLATOR w/400mV LVPECL OUTPUTS and INTERNAL INPUT TERMINATION
SY58013U_07 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:6GHz, 1:2 FANOUT BUFFER/TRANSLATOR w/400mV LVPECL OUTPUTS and INTERNAL INPUT TERMINATION
SY58013U_11 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:6GHz, 1:2 FANOUT BUFFER/TRANSLATOR w/400mV LVPECL OUTPUTS
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