hbwhelp@micrel.com or (408) 955-1690 13 PLL Stabilit" />
參數(shù)資料
型號: SY89537LMY
廠商: Micrel Inc
文件頁數(shù): 5/19頁
文件大小: 0K
描述: IC SYNTHESIZER/FANOUT BUFF 44MLF
標(biāo)準(zhǔn)包裝: 260
系列: Precision Edge®
類型: 時(shí)鐘/頻率合成器
PLL:
輸入: CMOS,HSTL,LVDS,LVPECL,LVTTL,SSTL,晶體
輸出: LVDS,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 3:7
差分 - 輸入:輸出: 是/是
頻率 - 最大: 756MHz
除法器/乘法器: 是/無
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: 44-VFQFN 裸露焊盤,44-MLF?
供應(yīng)商設(shè)備封裝: 44-MLF?(7x7)
包裝: 托盤
產(chǎn)品目錄頁面: 1083 (CN2011-ZH PDF)
其它名稱: 576-3239
Micrel, Inc.
SY89537L
December 2007
M9999-121207-B
hbwhelp@micrel.com or (408) 955-1690
13
PLL Stability
For the loop filter configurations shown in Figure 3a
and 3b, Table 5a and 5b below summarizes the PLLs
loop stability in terms of damping factor, natural
frequency, and bandwidth, and illustrates the pole and
zero cutoff frequencies determined by the loop filter
Parameter
Units
VCC
3
3.3
3.6
V
Temperature
–40
-40
25
85
C
VCO Frequency
2352
2800
3024
2352
2800
3024
2352
2800
3024
MHz
Charge Pump
Current
1.80E-04
A
Loop Filter
Resistor
130
Zero Capacitor
4.70E-07
F
Pole Capacitor
1.00E-09
F
VCO Gain
(KVCO)
3.20E+09
4.50E+09
2.80E+09
3.30E+09
3.10E+09
2.30E+09
1.70E+09
1.30E+09
Hz/V
Feedback Divider
168
Integer
Phase Detector
Frequency
14
16
18
14
16
18
14
16
18
MHz
Damping Factor
2.6
3.1
2.4
2.6
2.2
1.7
1.9
Natural
Frequency
13600.29
16127.95
12721.90
13811.16
13386.09
11530.20
9912.83
8668.52
Hz
Ratio=Phase
Detector Freq/BW
197
160
180
225
219
262
274
424
624
Zero Frequency
2.61E+03
Hz
Loop Bandwidth
(BN)
7.1E+04
9.98E+04
9.98+04
6.21E+04
7.32E+04
6.88E+04
5.1E+04
3.77E+04
2.88E+04
Hz
Pole Frequency
1.22E+07
Hz
Table 5a. Optimized for Lowest Cycle-to-Cycle Jitter
(R = 130, C1 = 0.47F, C2 = 100pF)
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