CTS
Reeves
FREQUENCY PRODUCTS
Model 365
Low Cost HF VCXO
CRYSTALS
Features:
•
•
•
•
•
•
Frequency Range 2 to 160 MHz
Low Cost
PLL Technology above 30 MHz
HCMOS/TTL Compatible
14 Pin DIP Compatible Package
Standard Frequencies
CLOCKS
• Stabilities to
±25
ppm
The CTS Reeves Model 365 is a low cost VCXO,
enclosed in a 14 Pin DIP Package for use in Phase Lock Loop Applications. The use of PLL
technology above 30 MHz and its small size means more application flexibility. The Model 365
is available with a variety of pullability and stability options and is useful in almost any VCXO
application. Low noise means superior jitter performance in communication applications.
VCXOs
Electrical Specifications:
Parameter
Supply Voltage
Supply Current
2 to 30 MHz
30 to 160 MHz
Output Voltage Levels
Logic '1' Level:
Logic '0' Level:
Output Transition Times
Rise & Fall Time 2 to 30 MHz
Rise & Fall Time 30 to 160 MHz
Symmetry or Duty Cycle
*2.0 to 16.0 MHz
16.0 to 30.0 MHz
730.0 to 100 MHz
Over 100 MHz
Output Short-Circuit Current
1 minute max. duration
Fanout
CMOS Load 2 to 30 MHz
CMOS Load >30 to 100 MHz
CMOS Load >100 to 160 MHz
TTL Load
Start Up Time
Period Jitter (pk-pk)
2 to 30 MHz
30 to 160 MHz
30 to 160 MHz
Output Clock Frequency
Operational Temp Range
Frequency Stability
* 40/60% for TTL load applications
Symbol
V
DD
I
DD
I
DD
V
OH
V
OL
T
R,F
T
R,F
45
40
45
40
I
OS
4
0.5
8
5
55
60
55
60
150
50
30
15
10
10
Min
4.5
Typical
5.0
Max
5.5
35
75
Unit
Volts
mA
mA
Volts
Volts
nS
nS
%
%
%
%
mA
pF
pF
pF
Loads
mS
Absolute Maximum Ratings
Parameter
Supply Voltage
Voltage Control
Symbol
VDD
Vc
Min
-0.5
-0.5
Max
7.0
12.0
Unit
Volts
Volts
VCXO Specifications
Parameter
Symbol Min Nominal Max Unit
Control Voltage
Vc
0.5
2.5
4.5 Volts
Deviation range
100
±ppm
Linearity
10 %
Transfer Function
Positive
Input Impedance
50
KΩ
Modulation Rate
@ -3db
10 kHz
TCXOs
Test Conditions
CMOS
TTL
Symmetry
50% of waveform
1.5 Level
Load
2 to 30 MHz
50pF
10 TTL Loads
>30 to 100 MHz
30pF
10 TTL Loads
>100 to 160 MHz
15pF
10 TTL Loads
Rise & Fall Time
10% to 90%
.5V to 2.5V
of waveform
T
S
Maximum Current Ratings
Range
>30
>50
>80
>100
>130
in
to
to
to
to
to
MHz
50
80
100
1301
160
Current (mA) @ Vcc=5.50V
No Load 15pF 30pF 10TTL
35
40
45
35
35
40
50
35
35
45
55
35
40
50
N/A
40
45
65
N/A
55
OCXOs
fo
2
See Ordering Information
See Ordering Information
50
pS
200
pS
0.01 Unit Interval
160
MHz
400 REIMANN AVE.
•
SANDWICH, IL 60548
Phone: 815-786-8411
•
Fax: 815-786-3600
•
E-Mail: www.ctsreeves.com
67
CTS
Reeves
CRYSTALS
FREQUENCY PRODUCTS
Model 365
Low Cost HF VCXO
Waveform Conditions:
Period (100%)
% Uptime
CMOS
(100%)
+2.4V
(90%)
+1.5V
(50%)
+0.5V
(10%)
t
f
t
f
TTL
Equivalent Test Load:
Vcc
Vcc
Out
Ground
Test
Point
HI-Z
Probe
5 TTL LOADS
5V
CR1
500 OHM
NOM.
CR2
CR3
Voh
Vol
15 pf
.01uF
CR4
CLOCKS
CR1-CR4 are IN3064
Note: Do Not Use TTL Load For CMOS Measurements
PIN Connections
PIN
1
7
8
14
Key
mm
in
VCXOs
FUNCTION
Control Voltage
Circuit and Package Ground
Output
+5.0 VDC
Mechanical Specifications:
Case:
Metal, hermetically sealed
Leads:
Nickel plated with solder coating,
or gold plated
Seal:
Resistance weld
Fine Leak Test:
Mass spectrometer leak rate less than
5x10
-8
atmosphere-cc/sec of helium
Solderability:
95% solder coverage, using RMA flux
63 Sn / 37 Pb solder at +245°C
±5°C
Temperature:
Operating: See Chart
Storage: -55 to 125°C
Vibration:
20 G's rms, 20 to 2000 Hz
Mechanical Shock:
1000 G's 5ms pulse (3 shock/plane)
TCXOs
Configuring The Part Number...
OCXOs
MODEL 365
—
—
Frequency Deviation**
1 =
±100
ppm min..
2 = Custom
Frequency Tolerance*
3 =
±0.005%
(±50 ppm)
5 =
±0.0025%
(±25 ppm)
0°C to 70°C only
Temp Range
C = 0 to 70°C
I = -40 to 85°C
Frequency (MHz)
* Inclusive of initial Tolerance, changes in supply voltage, load, temperature and first year aging.
** Positive Slope
68
400 REIMANN AVE.
•
SANDWICH, IL 60548
Phone: 815-786-8411
•
Fax: 815-786-3600
•
E-Mail: www.ctsreeves.com
Microchip MCU
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