tRF CLOAD = 20 pf See Figure 2 —25 — ns LOSn Trigg" />
參數(shù)資料
型號(hào): SI5315B-C-GMR
廠商: Silicon Laboratories Inc
文件頁(yè)數(shù): 54/54頁(yè)
文件大?。?/td> 0K
描述: IC CLOCK MULT 8KHZ-125MHZ 36QFN
應(yīng)用說(shuō)明: SI5315/17 Crystal Selection AppNote
標(biāo)準(zhǔn)包裝: 250
系列: DSPLL®
類型: 時(shí)鐘/頻率倍增器,抖動(dòng)衰減器,多路復(fù)用器
PLL: 無(wú)
主要目的: 以太網(wǎng),SONET/SDH/PDH,電信
輸入: CML,CMOS,LVDS,LVPECL
輸出: CML,CMOS,LVDS,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 2:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 125MHz
電源電壓: 1.71 V ~ 3.63 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 36-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 36-QFN(6x6)
包裝: 帶卷 (TR)
Si5315
Rev. 1.0
9
LVCMOS Output Pins
Rise/Fall Times
tRF
CLOAD = 20 pf
—25
ns
LOSn Trigger Window
LOSTRIG
From last CKINn
to
internal detection of LOSn
——
750
s
Time to Clear LOL after LOS
Cleared
tCLRLOL
LOS to LOL
Assume Fold=Fnew,
Stable XA-XB reference
—10
ms
PLL Performance
Output Clock Skew
tSKEW
of CKOUTn to CKOUTn
100
ps
Phase Change Due to
Temperature Variation
tTEMP
Maximum phase change from
–40 to +85 °C
300
500
ps
Lock Time
tLOCKHW RST with valid CKIN to LOL;
BW = 100 Hz
1200
ms
Closed Loop Jitter Peaking
JPK
—0.05
0.1
dB
Jitter Tolerance
JTOL
ns pk-
pk
Minimum Reset Pulse Width
tRSTMIN
1—
s
Output Clock Initial Phase Step
tP_STEP
During clock switch CKIN > 19.44
MHz
100
200
ps
Holdover Frequency Historical
Averaging Time
tHISTAVG
—6.7
sec
Holdover Frequency Historical
Delay Time
tHISTDEL
—26.2
ms
Spurious Noise
SPSPUR
Max spur @ n x f3
(n > 1, n x f3 < 100 MHz)
—–75
dBc
Table 3. AC Characteristics (Continued)
(VDD = 1.8 ±5%, 2.5 ±10%, or 3.3 V ±10%, TA = –40 to 85 C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
Notes:
1. Assumes N3 does not equal 1. IF N3 = 1, CKNDC = 50 s.
2. Refers to Si5315A speed grade.
3. Refers to Si5315B speed grade.
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