SAW Oscillator. EG-2121CA-L Datasheet

EG-2121CA-L Datasheet PDF, Equivalent


Part Number

EG-2121CA-L

Description

2.5V operation LVDS SAW Oscillator

Manufacture

Epson Company

Total Page 3 Pages
PDF Download
Download EG-2121CA-L Datasheet PDF


EG-2121CA-L Datasheet
2.5V operation LVDS SAW Oscillator
EG-2121CA-L
Features
Generates high frequency clock from a high stability SAW (surface acoustic wave) resonator.
2.5V-LVDS output.
Very low jitter/low phase noise.
Small SMD in 7x5mm, Max1.4mm height, ceramic package.
Applications
Gigabit Ethernet, Fibre channel, Infini Band, PCI-express, Rapid IO, Hyper Transport, Memory clock, CPU clock
Absolute Maximum Ratings
Item
Supply Voltage
Storage temperature
Solder heat resistance
Symbol
VCC
Tstg
Tsol
Unit MIN. TYP.
V -0.5
°C -40
Max. 240°C x Max. 10s x 2 times
MAX.
+4.0
+100
Condition
VCC – GND
Stored as bare product
Operating range
Item
Supply voltage
Operating temperature
Output load
Symbol
VCC
Topr
RL
Unit
V
°C
MIN.
2.375
0
-5
TYP.
2.5
100
MAX.
2.625
+70
+85
Condition
P version
R version
Differential resistor
Frequency characteristics
Item
Symbol
Unit
MIN.
TYP.
(VCC=2.375 to 2.625,GND=0.0V,Load=100)
MAX.
Condition
Output frequency Range
Frequency Stability
fosc
MHz
53.125
df/f0 ppm -100
-50
700
+100
+50
H version, *1
G version, *1
*1 This includes initial frequency tolerance, temperature, supply voltage variation and loading variation. Please refer to Part Numbering Guide (page3).
Electrical characteristics
Item
Start up time
Current consumption
OE High level input voltage
OE Low level input voltage
OE High level input current
OE Low level input current
Differential output voltage
Change to VOD
Offset Voltage
Change to VOS
Duty
at outputs crossing point
Symbol
Tosc
IOP
VIH
VIL
IIH
IIL
VOD
dVOD
VOS
dVOS
tw/t
Unit
ms
mA
V
V
uA
uA
mV
mV
V
mV
%
Output Rise time
Output Fall time
Phase Jitter *2
Offset =12KHz to 20MHz
tTLH
tTHL
TPJ
Period Jitter *3
n=50000 samples
Accumulated Jitter *3
n=2 to 50000 cycles
tRJ
tp-p
tacc
*2 Measured by SSB phase noise test equipment.
*3 Measured by Time interval analyzer or oscilloscope.
ps
ps
UI
ps
ps
ps
ps
MIN.
0.7VCC
-100
247
1.125
48
45
40
TYP.
20
25
350
1.25
0.044x10-3
0.29
3
25
4
(VCC=2.375 to 2.625,GND=0.0V,Load=100)
MAX.
Condition
10 t=0 at VCC=2.375V
30 fosc<=500MHz
35 fosc>500MHz
0.3VCC
1
-10
454
50
1.375
150
52
55
60
400
400
1
4
40
5
OE= VCC
OE=GND
VOD1 ,VOD2
dVOD=VOD1 - VOD2
VOS1 ,VOS2
dVOS=VOS1 - VOS2
V version: <=175MHz
53.125M to 350MHz
>350M
20-80% of VOD
80-20% of VOD
53.125 to 700MHz
@156.25MHz
σ of Random Jitter
Peak to Peak of jitter distribution
σ of Total jitter distribution
EPSON ELECTRONICS AMERICA, INC.
www.eea.epson.com
EG2121 LVDS Rev 1.4 35D

EG-2121CA-L Datasheet
Test circuit
IOP 50Line Impedance
A
By-pass capacitor
10µF
65
Vcc OUT
4
OUT
Power
Supply
Bypass capacitor
0.01 to 0.1 µF
OE
OE
1
NC GND
23
Test Point
100
Test Point
Timing chart
tTLH tTHL
80%
OUT
Outputs crossing
20%
OUT
Duty=tw/t x 100
tw
t
External Dimensions ( Unit : mm )
#6
7.0 ±0.2
#5
#4
E EG-2121
150.000L
HPA21MA
#1 #2
#3
No. Pin Name
#1 OE
#2 N.C.
#3 GND
#4 OUT
#5 OUT
#6 VCC
EPSON ELECTRONICS AMERICA, INC.
www.eea.epson.com
Vcc
VOD Differential Voltage
VOS Offset Voltage
GND
1.4 Max
#4
5.08
#5 #6
#3
Soldering position
#1
#2
1.40
0.94 1.60
5.08
EG2121 LVDS Rev 1.4 35D


Features Datasheet pdf 2.5V operation LVDS SAW Oscillator EG-2 121CA-L ♦ Features • Generates high frequency clock from a high stability SAW (surface acoustic wave) resonator. • 2.5V-LVDS output. • Very low jitt er/low phase noise. • Small SMD in 7x 5mm, Max1.4mm height, ceramic package. ♦ Applications • Gigabit Ethernet, Fibre channel, Infini Band, PCI-express , Rapid IO, Hyper Transport, Memory clo ck, CPU clock ♦ Absolute Maximum Rati ngs Item Supply Voltage Storage tempera ture Solder heat resistance ♦ Operati ng range Item Supply voltage Operating temperature Output load ♦ Frequency c haracteristics Item Output frequency Ra nge Frequency Stability Symbol VCC Tst g Tsol Unit MIN. TYP. MAX. +4.0 +10 0 Condition VCC – GND Stored as bare product V -0.5 °C -40 Max. 240°C x Max. 10s x 2 times Symbol VCC Topr RL Unit V °C Ω MIN. 2.375 0 -5 TYP. 2.5 MAX. 2.625 +70 +85 Condition P ve rsion R version Differential resistor 100 Symbol fosc df/f0 Unit MHz ppm MIN. 53.125 -100 -50 TYP. (VCC=2.375 to 2.625,GND=.
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