EG-2102CA Rev 1.1 2Y5
EG-2102CA -High frequency PECL Oscillator-
♦ Features
• Generates high frequency clock from a high stability SAW (surface acoustic wave) resonator.
• Differential LV-PECL output.
• Very low jitter/low phase noise.
• Small SMD in 7x5mm, Max1.4mm height, ceramic package.
♦ Applications
• 10Gigabit Ethernet, Fibre channel, High-end Server
♦ Absolute Maximum Ratings
Item Symbol Unit MIN. TYP. MAX. Condition
Supply Voltage VCC V -0.5 +4.0 VCC - GND
Storage temperature Tstg °C -40 +100 Stored as bare product after
unpacking
Solder heat resistance of the
outer lead Tsol Max. 240°C x Max. 10s x 2 times
♦ Operating range
Item Symbol Unit MIN. TYP. MAX. Condition
Supply voltage VCC V 3.0 3.3 3.6
0 +70 P version Operating temperature TOPR °C -5 +85 R version
Output load RL Ω 50 Terminated to VCC -2V
♦ Frequency characteristics (VCC=3.0 to 3.6,GND=0.0V,Load=Max,Output bias=Vcc-2.0V)
Item Symbol Unit MIN. TYP. MAX. Condition
Oscillation Range fosc MHz 100 700
+/-100 H stability *1 Frequency Stability df/f0 ppm +/-50 G stability *1
Aging dfa ppm +/-5 1st year N (Excluding Aging) condition
*1 This includes initial frequency tolerance, temperature variation, supply voltage variation, load variation and reflow drift.
Condition “A” includes 10yrs aging. Condition “N” doesn’t include aging.
♦ Electrical characteristics (VCC=3.0 to 3.6,GND=0.0V,Load=Max,Output bias=Vcc-2.0V)
Item Symbol Unit MIN. TYP MAX. Condition
Start up time tosc ms 10 t=0 at VCC=3.135V
Current consumption IOP mA 80 100
With 50Ω load
Disable current IOE mA 32 OE=GND
Rise time tTLH ps 400 20-80% of (VOH-VOL)
Fall time tTHL ps 400 80-20% of (VOH-VOL)
45 55 P version. 100 to 700MHz Duty
at outputs crossing point tw/t % 48 52 D version. <350MHz
High level output voltage VOH V Vcc-1.03 2.35 Vcc-0.88 VCC=3.3V, *4
Low level output voltage VOL V Vcc-1.81 1.60 Vcc-1.62 VCC=3.3V
High level input voltage VIH V 0.7VCC
OE Terminal.
Low level input voltage VIL V 0.3VCC OE Terminal.
Output disable time TPXZ ns 100 When OE turns High to Low.
Output enable time TPZX ns 100 When OE turns Low to High.
UI 0.072x10-3 12KHz to 20MHz, rms Phase Jitter *2 tPJ UI 0.103x10-3 50KHz to 80MHz, rms
tDJ ps 5 10 Deterministic Jitter
tRJ ps 3 4
σ of Random Jitter
tRMS ps 3 4
σ of Total jitter distribution
Period Jitter *3
n=50000 samples
tp-p ps 25 40 Peak to Peak of jitter distribution
Accumulated Jitter *3
n=2 to 50000 cycles tacc ps 4 5
σ of Total jitter distribution
*2 Measured by SSB phase noise test equipment. *3 Measured by Time interval analyzer or oscilloscope. *4 VOH = Vcc-1.09 MIN at Ta<0°C
EPSON ELECTRONICS AMERICA, INC.
www.eea.epson.com
EG-2102CA Rev 1.1 2Y5
♦Test circuit
♦ Timing chart
♦ OE function and timing OE terminal Osc. circuit Output
High or Open Enable Enable
Low Enable Disable (high impedance)
tPXZ
OUT
OUT high impedance
tPZX
Enable
Disable
OE VIH
VIL
Bypass capacitor
0.01 to 0.1 µF
By-pass capacitor
10µF
Power
Supply
OUT
IOP
OE 3
4
21 GND
Vcc
Test Point
A
56 OUT
NC
Test Point
130Ω
130Ω
82Ω
82Ω
OE
50Ω Line Impedance
Outputs crossing
20%
Vcc
VOL
VOH
GND
t
tw
tTHL
tTLH
Duty=tw/t x 100
80%
OUT
OUT
Vcc-2.0V
Output bias
EPSON ELECTRONICS AMERICA, INC.
www.eea.epson.com
EG-2102CA Rev 1.1 2Y5
♦ External Dimensions ( Unit : mm )
1.40
E EG-2102
644.531P
HPA21M
A
7.0 ±0.2 5.08
1.4 Max
5.0 ±0.2
0.70
2.60 1.10
#3 #2
#1
#1
#4 #5 #5 #6 #6 #4
#2 #3
No.
#1
#2
#3
#4
Pin Name
OE
N.C.
GND
OUT
#5
#6 OUT
VCC
• Soldering pattern
(Metallize)
1.600.94
5.08
1.50
3.90
2.40
♦ Part Numbering Guide *1
EG-2102CA - (Frequency)M - P H P A
Stability condition A: Including 10yrs Aging N: Excluding Aging
Temperature Range P: 0 to +70C R: - 5 to +85C
Frequency Stability H: +/-100ppm G: +/-50ppm
Output P: LVPECL (Duty +/-5%) D: LVPECL (Duty +/-2%) *2
Output Frequency : see Standard frequency list (4-Digit accuracy)
*1: Available combination : xHPA, xHPN, xHRA, xHRN, xGPN
For xGPA and xGRN, please contact Epson.
xGRA is not available.
*2: D (Duty+/-2%) is available under 350MHz.
♦ Standard Frequency List
100.0000 106.2500 125.0000 155.5200 156.2500 161.1328 *3
200.0000 212.5000 250.0000 311.0400 312.5000 322.2656 *4
400.0000 425.0000 500.0000 622.0800 625.0000 644.5313 *5
159.3750
Please round off 5th digit specify 4-digit accuracy under decimal point.
Nominal frequency: *3=161.1328125MHz, *4=322.265625MHz, *5=644.53125MHz
EPSON ELECTRONICS AMERICA, INC.
www.eea.epson.com
