參數(shù)資料
型號(hào): Si571
廠商: Silicon Laboratories Inc.
英文描述: ANY-RATE I2C PROGRAMMABLE XO/VCXO
中文描述: 任意頻率I2C可編程振蕩器/壓控
文件頁數(shù): 7/26頁
文件大小: 295K
代理商: SI571
Si570/Si571
Rev. 0.3
7
Table 4. CLK± Output Levels and Symmetry
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
LVPECL Output Option
1
V
O
V
OD
V
SE
V
O
mid-level
V
DD
– 1.42
1.1
V
DD
– 1.25
1.9
V
swing (diff)
V
PP
V
PP
swing (single-ended)
0.55
0.95
LVDS Output Option
2
mid-level
1.125
1.20
1.275
V
V
OD
swing (diff)
0.5
0.7
0.9
V
PP
CML Output Option
2
V
O
mid-level
V
DD
– 0.75
0.95
V
V
OD
swing
(diff)
0.70
1.20
V
PP
CMOS Output Option
3
V
OH
I
OH
= 32 mA
I
OL
= 32 mA
LVPECL/LVDS/CML
0.8 x V
DD
V
DD
V
V
OL
0.4
Rise/Fall time (20/80%)
t
R,
t
F
350
ps
CMOS with C
L
= 15 pF
LVPECL:
V
DD
– 1.3 V (diff)
LVDS:
1.25 V (diff)
CMOS:
V
DD
/2
1
ns
Symmetry (duty cycle)
SYM
45
55
%
Notes:
1.
50
Ω
to V
DD
– 2.0 V.
2.
R
term
= 100
Ω
(differential).
3.
C
L
= 15 pF
Table 5. CLK± Output Phase Jitter (Si570)
Parameter
Symbol
φ
J
Test Condition
Min
Typ
Max
Units
Phase Jitter (RMS)*
for F
OUT
> 500 MHz
12 kHz to 20 MHz (OC-48)
0.25
0.40
ps
50 kHz to 80 MHz (OC-192)
0.26
0.37
Phase Jitter (RMS)*
for F
OUT
of 125 to 500 MHz
φ
J
12 kHz to 20 MHz (OC-48)
0.36
0.50
ps
50 kHz to 20 MHz (OC-192)
0.34
0.42
*Note:
Differential Modes: LVPECL/LVDS/CML. Refer to AN256 for further information.
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