Product Data Sheet
J-Type
Voltage Controlled Crystal Oscillator
Features
• Output Frequencies from 1.024 MHz to 170.000 MHz
• +3.3 or +5.0 volt options
• Small 14mm x 9mm J-type Package
• CMOS or PECL Outputs
• Low phase noise and custom options
• 0/70° C or –40/85° C operating temperature
• Tri-State output (CMOS) Enable/Disable (PECL)
Applications
• Clock Smoothing
• Frequency Translation
• SONET, SDH, ATM, DSLAM, ADM
Description
The J-type voltage controlled crystal oscillator incorpo-
rates VI’s advanced VCXO performance capabilities
while adhering to a package footprint compatible with
the industry-common J-lead package.
The J-type VCXO is a quartz stabilized square wave
generator with either a CMOS output for driving
CMOS/TTL loads or a PECL output. The device is pack-
aged in a 6 pin J-lead ceramic package and is hermeti-
cally sealed with a grounded conductive lid.
J-Type Voltage Controlled Crystal Oscillator
CMOS Output Option
Electrical Performance @ 25°C for the CMOS output option
Parameter
Supply Voltage , +5 volt option
+3.3 volt option
Supply Current
Center Frequency,
see ordering information
Operating Temperature, see ordering info
Absolute Pull Range over the operating tempera-
ture range, aging and power supply Vc=0.5 to
4.5 at 5V supply or 0.3 to 3.0 V at 3.3V supply
see ordering information for options
Gain Transfer
(Frequency vs. Control Voltage)
Output Level High
2
Output Level Low
2
Output Rise/Fall Time
2
Duty Cycle
3
,
see ordering info
Control Input Leakage
Control Voltage Modulation Bandwidth
RMS Jitter, Output=12.0-77.760 MHz
RMS Jitter, Output=12.0-77.760 MHz.
Band=12.0 KHz - 20 MHz
Control Range
Maximum Supply Voltage
Storage Temperature
Soldering Temp./Time
1
Symbol
Minimum
Typical
Maximum
Unit
Vdc
Vdc
MHz
°C
ppm
F
N
T
OP
APR
4.5
5.0
5.5
3.0
3.3
3.6
10mA + 0.25mA per MHz, typical
1.024
77.760
0/70, -40/85
±50 to ±100
K
V
V
OH
V
OL
t
R
/ t
F
SYM
I
L
BW
0.8*Vcc
Positive
-
-
45/55 or 40/60
-
10
3
<0.5
1
-
V
V
ns
%
uA
kHz
ps
ps
0.1*Vcc
5
0
T
S
T
LS
-55
-
-
-
V
DD
7
125
220/10
V
°C
°C/s
1. Power supply bypass is required and a 0.1uF in parallel with a 0.01uF high frequency capacitor is recommended.
2. Figure 1 defines these parameters. Figure 2 illustrates the load used to test devices.
3. Duty cycle is defined as on-time versus period at 1.4 V for TTL, and 2.5 V for CMOS (5volt supply) and at 1.65 V for CMOS (3.3 volt operation)
Pin Out Information for the CMOS output option
Pin
1
2
3
4
5
6
Symbol
Vc
Tri-State
GND
Output
CMOS/TTL
select
1,2
V
CC
1
Function
VCXO Control Voltage.
TTL logic low disables output
TTL logic high, or no connect, enables output
Case and electrical ground.
VCXO Output
TTL logic low optimizes symmetry for CMOS
TTL logic high, or NC, optimizes symmetry for TTL.
Power Supply Voltage (5.0 V or 3.3V ±10%)
1. Standard option. Tri-State can be connected to pin 5 and CMOS/TTL select would be on pin 2.
2. Output is HCMOS. For frequencies >12MHz, this option optimizes symmetry for either CMOS or TTL thresholds. Ground this pin for fre-
quencies < 12MHz.
Vectron International •
267 Lowell Road, Hudson, NH 03051
• Tel: 1-88-VECTRON-1 • Fax: 1-888-FAX-VECTRON
2
J-Type Voltage Controlled Crystal Oscillator
CMOS Output Option
Figure 1
Output Wave Form
Figure 2
Output Test Conditions
Threshold = 1.4 volts for TTL
and 50% for CMOS
Output Test Conditions (25±5°C) for 5 volt devices.
For 3.3V use 15pF cap only, no resistors needed.
Ordering Information for the CMOS output option (add frequency)
4
Package
Supply
Voltage
C
5V±10%
VCXO
Type
U
VCXO G
APR
(ppm)
±50
C
Operating
Temp.
(°C)
0/70
A
Output/Duty
Cycle
Min/Max
TTL/
CMOS
45/55%
1
CMOS
45/55%
2
CMOS
40/60%
3
Tri-State
Specials
J
6 pin
Ceramic
SOJ
T Tri State
on pin 2
N
Standard
D 3.3V±10% L
±10% N
linear
VCXO
H
±80
L
-40/85
J
±100
K
1. Output is CMOS and symmetry is tested at TTL and CMOS thresholds.
2. Output is CMOS and symmetry is tested at CMOS threshold. This option is used for 3.3 V operation.
3. Output is CMOS and symmetry is tested at CMOS thresholds. This option is required for 3.3V, frequencies >51.840MHz.
4. Note: Not all combinations are possible.
Example: JDUGCKTN @ 77.76 MHz = 3.3 volt, VCXO@77.760, ±50 ppm APR, 0/70°C, 40/60% Symmetry,
CMOS, Tri-State on pin 2.
Standard Frequencies, in MHz, for CMOS output option
1.024
3.686
6.144
8.448
14.318
19.44
27.000
38.880
52.000
1.544
4.000
6.176
10.000
15.360
20.000
30.000
40.000
65.536
2.000
4.032
6.312
12.000
15.440
20.480
32.000
40.960
77.760
2.048
4.096
6.400
12.288
16.000
24.000
32.768
44.736
155.520
1
3.088
4.434
8.000
12.352
16.384
24.576
34.368
50.000
3.580
5.000
8.192
13.000
18.432
24.704
35.328
51.840
1. Uses a PLL multiplier, jitter is 25ps rms typical vs 3ps rms typical for a HFF (High Frequency Fundemental) design. Available with 5 Vdc input only.
Other frequencies available upon request.
Vectron International •
267 Lowell Road, Hudson, NH 03051
• Tel: 1-88-VECTRON-1 • Fax: 1-888-FAX-VECTRON
3
J-Type Voltage Controlled Crystal Oscillator
PECL Output Option
Electrical Performance @ 25°C for the PECL output option
Parameter
Supply Voltage , +5 volt option
+3.3 volt option
Supply Current (frequency dependent)
Center Frequency,
see ordering information
Operating Temperature, see ordering info
Absolute Pull Range over the operating tempera-
ture range, aging and power supply Vc= 0.5 to
4.5 at 5V supply or 0.3 to 3.0 V at 3.3 supply
see ordering information for options
Gain Transfer
(Frequency vs. Control Voltage)
Output Level High
2
(0/70°C)
Output Level Low
2
(0/70°C)
Output Level High
2
(-40/+85°C)
Output Level Low
2
(-40/+85°C)
Output Rise/Fall Time
2
Duty Cycle
Control Input Leakage
Control Voltage Modulation Bandwidth
RMS Jitter
RMS Jitter, 155.52 MHz, 12 kHz to 20 MHz (option P)
Maximum Control Voltage
Maximum Supply Voltage
Storage Temperature
Soldering Temp./Time
1
Symbol
Minimum
4.5
3.0
Typical
5.0
3.3
Maximum
5.5
3.6
<65mA
170
Unit
Vdc
Vdc
MHz
°C
ppm
F
N
T
OP
APR
15
0/70, -40/85
±32 to ±50
K
V
V
OH
V
OL
V
OH
V
OL
t
R
/ t
F
SYM
I
L
BW
Vcc-1.025
Vcc-1.810
Vcc-1.085
Vcc-1.830
Positive
-
-
-
-
Vcc-0.880
Vcc-1.620
Vcc-0.880
Vcc-1.555
1
45/55
0.1
V
V
V
V
ns
%
mA
kHz
ps
ps
V
°C
°C/s
10
see ordering information
0.5
1.0
0
V
DD
7
-55
-
125
-
-
220/10
T
S
T
LS
1. Power supply bypass is required and a 0.1uF in parallel with a 0.01uF high frequency capacitor is recommended.
2. Transition times are measured from 20% to 80% of a full 10K ECL level swing.
Pin Out Information for the PECL output option
Pin
1
2
3
4
5
6
Symbol
Vc
N/C or E/D
GND
Output
C
Output
V
CC
1
Function
VCXO Control Voltage.
No Connect or Output Disable option
Case and electrical ground.
VCXO Output
VCXO Complementary Output
Power Supply Voltage (5.0 V or 3.3V ±10%)
1. By setting pin 2 high, the outputs are disabled and output on pin 4 is held low while Complementary output on pin 5 is held high.
Output is enabled by setting pin 2 at < Vcc -1.6V, See ordering information for enable/disable option.
Vectron International •
267 Lowell Road, Hudson, NH 03051
• Tel: 1-88-VECTRON-1 • Fax: 1-888-FAX-VECTRON
4
J-Type Voltage Controlled Crystal Oscillator
PECL Output Option
Output Wave Form
Output Test Conditions
Output Test Conditions (25±5°C)
Ordering Information for the PECL output option (add frequency)
Package
Supply
Voltage
C
5V±10%
1
VCXO
Type
U
VCXO
F
APR
(ppm)
±32
C
Operating
Temp.
(°C)
0/70
M
Output/Duty
Cycle
Min/Max
PECL
45/55%
U
Enable/
Disable
None
N
Specials
J
6 pin
Ceramic
SOJ
Standard
D 3.3V±10% L
±10% G
linear
VCXO
±50
L
-40/85
E Enable/
Disable
on pin 2
P
6ps rms
(<1ps rms
12 kHz-20 MHz)
jitter
12ps rms
jitter
20ps rms
jitter
M ±20ppm
stability
VCXO
R
T
1. Note: Not all combinations are possible.
Example: JDUGLMEP @77.76 MHz = 3.3 volt, VCXO @77.760, ±50 ppm APR, -40/85°C, 45/55% Symmetry,
PECL, Enable/Disable on pin 2, 6ps rms jitter
Standard Frequencies, in MHz, for PECL output options
77.760
82.944
155.52
Other frequencies available upon request.
Vectron International •
267 Lowell Road, Hudson, NH 03051
• Tel: 1-88-VECTRON-1 • Fax: 1-888-FAX-VECTRON
5
嵌入式系统
