Crystal Oscillators (XO’s)
XO-400
Description:
Vectron
International has introduced a series of low
cost complementary PECL Crystal Oscillators (XO’s)
available in frequencies from 15 MHz to 250 MHz in a
standard 4 pin DIP package. This series offers ultra low
jitter of <0.5 ps rms from 12 kHz to 20 MHz bandwidth.
Features:
•
•
•
•
Ultra low jitter
3.3 Vdc or 5 Vdc operation
Complementary PECL output
Standard 4 pin DIP package
Performance Characteristics
Parameter
Frequencies:
Package Size:
Supply Voltage:
Supply Current:
Output Type:
Output Level:
@ +25°C
Rise/Fall Time tr/tf:
Symmetry (Duty Cycle):
Internal Load:
Temperature Stability:
Characteristics
15 MHz to 250 MHz
20.32 x 12.70 x 10.29 mm (0.8” x 0.5” x 0.405”)
C
= 5 Vdc ±5%
D
= 3.3 Vdc ±5%
<80 mA
Complementary PECL
V
OH
(“1”) = Vcc - 1.02V min.
V
OL
(“0”) = Vcc - 1.63V max
<1.5 ns (20% to 80%)
50/50 ±5% @ Vcc - 1.3V for “D”; Vcc - 3V for “C”
274 ohm internal load for each output for 3.3 Vdc, 510 ohms for 5Vdc
C-C
= ±20 ppm All Causes over 0°C to +70°C
C-F
= ±32 ppm All Causes over 0°C to +70°C
C-G
= ±50 ppm All Causes over 0°C to +70°C
F-G
= ±50 ppm All Causes over -40°C to +85°C
All Causes = Entire Temperature Range, Aging for 10 years
Initial Accuracy and Supply variation.
<0.5 ps rms from 12 kHz to 20 MHz BW @ 155.52 MHz
Jitter:
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
68
Crystal Oscillators (XO’s)
XO-400
Outline Drawing
Standard Frequencies
Frequency
5.08
(.200)
Application
SONET
SONET
OC-1
SONET
10G / 128
FDDI
OC-3, SDH, STM1
10G/64
10.3125 G/64
OC-3 FEC 15/14
OC-3 FEC 255/237
OC-3 FEC 8/7
19.4400 MHz
38.8800 MHz
51.8400 MHz
77.7600 MHz
78.1250 MHz
125.0000 MHz
1
7
139.2640 MHz
155.5200 MHz
156.2500 MHz
161.1328 MHz
166.6286 MHz
167.3316 MHz
175.0000 MHz
177.7371 MHz
14
8
(in.)
.051
Dia
.002)
Pin Out Information
1
7
8
14
Complementary output
Case, Ground
Output
Supply Voltage (Vcc)
Ordering Information
XO
Product Family
XO
= Clock Oscillator
Package
400
= 4 pin DIP
Supply Voltage
C
= 5.0 Vdc ±5%
D
= 3.3 Vdc ±5%
400
D
F
C
C
155.52
MHz
Output Frequency
See Standard
Frequencies Chart above.
Temperature Stability
C-C
= ±20 ppm All causes
0°C to +70°C
C-F
= ±32 ppm All causes
0°C to +70°C
C-G
= ±50 ppm All causes
0°C to +70°C
F-G
= ±50 ppm All causes -40°C to +85°C
Note: Other stabilities are available upon request
Output
F
= Complementary PECL
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
6
嵌入式系统
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