SM802116 Datasheet, PDF (6/12 Pages) Micrel Semiconductor – ClockWorks™ Fibre Channel (106.25MHz, 212.5MHz) Ultra-Low Jitter, LVDS Frequency

Micrel, Inc.
SM802116
AC Electrical Characteristics^{(4, 5)}
V_DD = V_DDO1/2 = 3.3V ±5% or 2.5V ±5%
V_DD = 3.3V ±5%, V_DDO1/2 = 3.3V ±5% or 2.5V ±5%
T_A = −40°C to +85°C. R_L = 100Ω across Q and /Q.
Symbol
Parameter
Condition
F_OUT1
F_OUT2
F_REF
T_R/T_F
ODC
Output Frequency 1
Output Frequency 2
Reference Input Frequency
LVDS Output Rise/Fall Time
Output Duty Cycle
FSEL=1
FSEL=0
20% – 80%
T_SKEW
T_LOCK
Output-to-Output Skew
PLL Lock Time
Note 6
106.25MHz
Integration Range (637kHz – 10MHz)
Integration Range (12kHz – 20MHz)
T_jit(∅)
RMS Phase Jitter⁽⁷⁾
212.5MHz
Integration Range (637kHz – 10MHz)
Integration Range (12kHz – 20MHz)
Min.
100
48
Typ.
106.25
212.5
26.5625
220
50
Max.
400
52
45
20
190
250
180
240
Units
MHz
MHz
MHz
ps
%
ps
ms
fs
Spurious Noise Components
26.5625MHz using 106.25MHz
26.5625MHz using 212.5MHz
−90
dBc
−85
Notes:
5. All phase noise measurements were taken with an Agilent 5052B phase noise system.
6. Defined as skew between outputs at the same supply voltage and with equal load conditions; Measured at the output differential crossing points.
7. Measured using 26.5625MHz crystal as the input reference source. If using an external reference input, use a low phase noise source. With an
external reference, the phase noise will follow the input source phase noise up to about 1MHz.
July 2011
6
M9999-071811-A
[e-mail] or [phone]