EG-2121CA - P
2.5V PECL Oscillator
♦
Features
•
Generates high frequency clock from a high stability SAW (Surface Acoustic Wave) resonator.
•
Differential 2.5V-PECL output.
•
Very low jitter/low phase noise.
•
Small SMD in 7x5mm, Max1.4mm height, ceramic package.
♦
Applications
•
Ethernet, Fibre channel, InfiniBand, PCI-Express, RapidIO, Hypertransport, SONET etc.
♦
Absolute Maximum Ratings
Item
Supply Voltage
Storage temperature
Solder heat resistance
♦
Operating range
Item
Supply voltage
Operating temperature
Output load
♦
Frequency characteristics
Item
Output frequency Range
Frequency Stability
Symbol
V
CC
Tstg
Tsol
Unit
MIN.
TYP.
MAX.
+4.0
+100
Condition
V
CC
– GND
Stored as bare product.
V
-0.5
°C
-40
Max. 240°C x Max. 10s x 2 times
Symbol
V
CC
Topr
RL
Unit
V
°C
Ω
MIN.
2.375
0
-5
TYP.
2.5
MAX.
2.625
+70
+85
Condition
P version
R version
Terminated to V
CC
–2.0V
50
Symbol
fosc
df/f0
Unit
MHz
ppm
(V
CC
=2.375 to 2.625,GND=0.0V,Load=Max, Output bias=Vcc-2.0V)
MIN.
TYP.
MAX.
Condition
53.125
500
+/-100
H stability, *1
+/-50
G stability, *1
*1 This includes initial frequency tolerance, temperature, supply voltage variation, loading variation and 10years aging.
♦
Electrical characteristics
Item
Start up time
Current consumption
Output disable current
Rise time
Fall time
Duty
at outputs crossing point
High level output voltage
Low level output voltage
High level input voltage
Low level input voltage
Phase Jitter *2
Period Jitter *3
n=50000 samples
(V
CC
=2.375 to 2.625,GND=0.0V,Load=Max, Output bias=Vcc-2.0V)
MIN.
TYP.
MAX.
Condition
50
25
10
80
55
20
400
400
52
55
60
Vcc-0.88
Vcc-1.62
0.3V
CC
0.044x10
-3
0.043x10
5
3
3
25
4
-3
Symbol
Tosc
I
OP
I
OE
t
TLH
t
THL
tw/t
Unit
ms
mA
mA
mA
ps
ps
%
V
OH
V
OL
V
IH
V
IL
t
PJ
t
DJ
t
RJ
t
RMS
tp-p
tacc
Accumulated Jitter *3
n=2 to 50000 cycles
*2 Measured by SSB phase noise test equipment. *3 Measured by Time interval analyzer or oscilloscope.
V
V
V
V
UI
UI
ps
ps
ps
ps
ps
48
45
40
Vcc-1.025
Vcc-1.81
0.7V
CC
1.55
0.80
10
4
4
40
5
t=0 at V
CC
=2.375V
RL=50Ω
No Load
OE=GND
20-80% of (VOH-VOL)
80-20% of (VOH-VOL)
D version, <=175MHz
53.125 to 350MHz
>350MHz
DC test
DC test
OE Terminal
OE Terminal
12KHz to 20MHz
50KHz to 80MHz
Deterministic Jitter
σ
of Random Jitter
( of Total jitter distribution
Peak to Peak of jitter distribution
( of Total jitter distribution
EPSON ELECTRONICS AMERICA, INC.
www.eea.epson.com
EG2121 P Rev.1.2 2Y5
♦
Part Numbering Guide *1
EG-2121CA - (Frequency)M - P H P A
Stability condition
Temperature Range
Frequency Stability
Output
Output Frequency
*1: Available combination :
x
HPA,
x
HPN,
x
HRA,
x
HRN,
x
GPN
For
x
GPA and
x
GRN, please contact Epson.
x
GRA is not available.
*2: D (Duty+/-2%) is available under 175MHz.
A: Including 10yrs Aging
P: 0 to +70C
H: +/-100ppm
P: LVPECL
N: Excluding Aging
R: - 5 to +85C
G: +/-50ppm
D: LVPECL (Duty +/-2%) *2
: see Standard frequency list (4-Digit accuracy)
♦
Standard Frequency List
100.0000
106.2500
125.0000
140.0000
159.3750
161.1328
166.6286
167.3316
200.0000
212.5000
250.0000
280.0000
318.7500
322.2656
333.2571
334.6633
400.0000
500.0000
53.1250 *3
62.5000 *3
th
Please round off 5 digit specify 4-digit accuracy under decimal point.
*3 Available only
x
HPA and
x
HPN.
155.5200
173.3707
311.0400
346.7415
156.2500
175.0000
312.5000
350.0000
EPSON ELECTRONICS AMERICA, INC.
www.eea.epson.com
EG2121 P Rev.1.2 2Y5
Microcontroller MCU
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