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(yè)數(shù): 9/26頁(yè)
文件大?。?/td> 295K
代理商: SI571
Si570/Si571
Rev. 0.3
9
Phase Jitter (RMS)
1,2,3
for F
OUT
of 125 to 500 MHz
φ
J
Kv = 33 ppm/V
12 kHz to 20 MHz (OC-48)
50 kHz to 80 MHz (OC-192)
0.37
0.33
ps
Kv = 45 ppm/V
12 kHz to 20 MHz (OC-48)
50 kHz to 80 MHz (OC-192)
0.37
0.33
Kv = 90 ppm/V
12 kHz to 20 MHz (OC-48)
50 kHz to 80 MHz (OC-192)
0.43
0.34
Kv = 135 ppm/V
12 kHz to 20 MHz (OC-48)
50 kHz to 80 MHz (OC-192)
0.50
0.34
Kv = 180 ppm/V
12 kHz to 20 MHz (OC-48)
50 kHz to 80 MHz (OC-192)
0.59
0.35
Kv = 356 ppm/V
12 kHz to 20 MHz (OC-48)
50 kHz to 80 MHz (OC-192)
1.00
0.39
Table 7. CLK± Output Period Jitter
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
Period Jitter*
J
PER
RMS
2
ps
Peak-to-Peak
14
*Note:
Any output mode, including CMOS, LVPECL, LVDS, CML. N = 1000 cycles. Refer to “AN279: Estimating Period Jitter
from Phase Noise” for further information.
Table 6. CLK± Output Phase Jitter (Si571) (Continued)
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
Notes:
1.
Differential Modes: LVPECL/LVDS/CML. Refer to AN255, AN256, and AN266 for further information.
2.
For best jitter and phase noise performance, always choose the smallest K
V
that meets the application’s minimum APR
requirements. See “AN266: VCXO Tuning Slope (K
V
), Stability, and Absolute Pull Range (APR)” for more information.
3.
See “AN255: Replacing 622 MHz VCSO devices with the Si550 VCXO” for comparison highlighting power supply
rejection (PSR) advantage of Si55x versus SAW-based solutions.
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