sm840004-11 Micrel Semiconductor, sm840004-11 Datasheet - Page 4

• Manufacturer Part Number: sm840004-11
• Description: 62.5/125mhz Gigabit Ethernet, 4 Output, Ultra-low Jitter Clock Synthesizer
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
AC Electrical Characteristics
V
Test Circuit
3.3V Carrier Frequency, 62.5MHz
July 2010
Symbol
F
t
t
t
ODC
DD
SKEW
JITTER
R
Offset from Carrier
OUT
/ t
= 2.5V and 3.3V ±5%; T
F
1.825MHz
100kHz
10MHz
20MHz
100Hz
10kHz
1MHz
1kHz
Parameter
Output Frequency
Output to Output Skew
RMS Phase Jitter(random)
Output Rise/Fall Time
Output Duty Cycle
Measured Phase Noise
A
= –40°C to +85°C, unless noted.
-124
-137
-145
-151
-169
-169
-103
-135
Condition
F_SEL = 1
F_SEL = 0
125MHz @ 1.875MHz-20MHz
62.5MHz @ 1.875MHz-20MHz
20% to 80%
62.5MHz & 125MHz
3.3V Output Load AC Test Circuit
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Unit
4
3.3V Carrier Frequency, 125MHz
Offset from Carrier
100kHz
10MHz
20MHz
100Hz
10kHz
1MHz
1.825
1kHz
[e-mail]
Min
48
Measured Phase Noise
62.5
Typ
125
356
300
55
50
-103
-125
-134
-132
-143
-152
-166
-167
or [phone]
M9999-070110-A
Max
12
52
SM840004-11
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Unit
Units
MHz
ps
ps
%
fs
fs