|
|
Part: EG-2121CA
Category:
Timing Circuits
-> Oscillators
Description: High Frequency Pecl Oscillator
Company: Epson Electronics America, Inc.
Datasheet: Download EG-2121CA datasheet File size : 67 kB
Request For quote: Find where to buy EG-2121CA
Datasheet text preview:
2.5V operation LVDS SAW Oscillator
EG-2121CA-Lç
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.ç 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 Operating range Item Supply voltage Operating temperature Output load Frequency characteristics Item Output frequency Range Frequency Stability
Symbol VCC Tstg Tsol
Unit
MIN.
TYP.
MAX. +4.0 +100
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
MIN. 2.375 0 -5
TYP. 2.5
MAX. 2.625 +70 +85
Condition P version 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=0.0V,Load=100) MAX. Condition 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 Output Rise time Output Fall time Phase Jitter *2 Offset =12KHz to 20MHz Period Jitter *3 n=50000 samples Accumulated Jitter *3 n=2 to 50000 cycles
Symbol Tosc I OP VIH VI L II H IIL VOD dVOD VOS dVOS tw/t
Unit ms mA V V uA uA mV mV V mV %
MIN.
TYP. 20 25
(VCC=2.375 to 2.625,GND=0.0V,Load=100) MAX. Condition 10 30 35 0.3VCC 1 -10 454 50 1.375 150 52 55 60 400 400
-3
t=0 at VCC=2.375V fosc500MHz
0.7VCC OE= VCC OE=GND VOD1 ,VOD2 dVOD=VOD1 - VOD2 VOS1 ,VOS2 dVOS=VOS1 - VOS2 V version: 350M 20-80% of VOD 80-20% of VOD 53.125 to 700MHz @156.25MHz of Random Jitter Peak to Peak of jitter distribution of Total jitter distribution
-100 247 1.125 48 45 40
350 1.25
t T LH tTHL TPJ tRJ tp - p ta c c
ps ps UI ps ps ps ps
0.044x10 0.29 3 25 4
1 4 40 5
*2 Measured by SSB phase noise test equipment. *3 Measured by Time interval analyzer or oscilloscope.
EPSON ELECTRONICS AMERICA, INC. www.eea.epson.com
EG2121 LVDS Rev 1.4 35D
Test circuit
IOP A By-pass capacitor 10µF Power Supply Bypass capacitor 0.01 to 0.1 µF
OE NC GND
50 Line Impedance Test Point
6
Vc c
5
OUT
4
OUT
100 Test Point
OE
1
2
3
Timing chart
Vcc tTLH tTHL
OUT 80% Outputs crossing 20% OUT Duty=tw/t x 100 tw t GND VOS Offset Voltage VOD Differential Voltage
External Dimensions ( Unit : mm )
#6 #5 #4 #4 #5 #6 1.10 3.90 5.08 1.50 2.40 2.60 #1 #3 #2 1.40 · Soldering position 0.94 1.60 7.0 ±0.2 1.4 Max 5.08
E EG-2121 150.000L HPA21MA
#1
(Metallize)
5.0 ±0.2
#2
#3
0.70
No. #1 #2 #3 #4 #5 #6
Pin Name OE N.C. GND OUT OUT V CC
ç
EPSON ELECTRONICS AMERICA, INC. www.eea.epson.com
ç
EG2121 LVDS Rev 1.4 35D
Part Numbering Guide
EG-2121CA - 156.2500M - L H P A
Stability condition Temperature Range Frequency Stability Output Output Frequency *1 Available combination : xHPA, xHPN, xHRA, xHRN, xGPN For xGPA and xGRN stability, please contact Epson. xGRA is not available. *2 V (Duty +/-2%) version is available under 175MHz. ç A: Including 10yrs Aging N: Excluding Aging P: 0 to +70C R: - 5 to +85C H: +/-100ppm L: LVDS G: +/-50ppm V: LVDS (Duty +/-2%)*2
: see Standard frequency list
Standard Frequency List 53.1250 *3 62.5000 *3 100.0000 106.2500 125.0000 133.0000 159.3750 161.1328 *4 200.0000 212.5000 312.5000 322.2656 *5 400.0000 425.0000 622.0800 625.0000 644.5313 *6 th Please round off 5 digit and specify 4-digit accuracy under decimal point.
*3 available only xHPA and xHPN. Nominal frequency: *4=161.1328125MHz, *5=322.265625MHz, *6=644.53125MHz
155.5200 250.0000 500.0000
156.2500 311.0400
EPSON ELECTRONICS AMERICA, INC. www.eea.epson.com
EG2121 LVDS Rev 1.4 35D
Others parts begin by eg
EG-1 EG-2
|
|
|
