Preliminary Specification
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9x14mm Surface Mount Pkg.
Differential PECL Outputs
Guaranteed Minimum Pull Range
+3.3Vdc or +5.0Vdc Operation
Sealed AT Strip Crystal
Output Enable Function
Low Phase Jitter: < 1 pSec RMS
Excellent Solder Reflow Performance
Model 351
9x14mm Differential PECL
High Frequency VCXO
(832MHz to 1.66GHz)
Electrical Characteristics
Parameter
Power
Requirements
Power Supply
Supply Current
Frequency
Stabilities
Center
Frequency
Initial Tolerance
Freq. vs. Temp.
Freq. vs. Voltage
Freq. vs. Load
Freq. vs Time
(Aging)
Deviation
Characteristics
Control Voltage
Frequency
Deviation
Linearity
Absolute Pull
Range
Input Impedance
Waveform
Parameters
Symmetry
Amplitude
Rise/Fall Times
Load
Phase Jitter
Sym
Vcc
Icc
Conditions
±
5%
350L
±
5%
350S
Vcc=Max. (3.3Vdc)
50Ω . Load (5.0Vdc)
Min
3.135
4.75
Typical
3.30
5.0
55
80
Max
3.465
5.25
Unit
Vdc
Vdc
mA
mA
f
nom
f
cal
∆f/∆Temp
∆f/∆Vcc
∆f/∆RL
∆f/∆Time
Ta=+25°C
EFC=Center(0.5Vcc)
Oper. Temp. Range
Vcc
±
5%
±
10% Variation
20 years
832
-10
1244.16
1664
+10
±
15
MHz
ppm
ppm
ppm
ppm
ppm
±
1
±
1
±
10
VC
∆f
Lin
APR
3.3V “ Version
L”
5.0V “ Version
S”
+25°C at time of
Shipment
Best Staight Line Fit
Under all conditions
for the life of the part
(Ref. to f
nom
)
0.15
0.5
±
125
-10
±
85
5
3.15
4.5
V
V
ppm
%
ppm
10
Zin
100
KΩ
Sym
Vo
tr, tf
RL
@ 50% Level
50Ω Load
20% to 80%
Output to Vcc-2.0V
or Equivalent
12KHz to 20MHz or
50KHz to 80MHz
Bandwidth
45
Vcc-1.62V
50
225
50
55
Vcc-1.025V
350
%
V
pSec
Ω
pSec RMS
<1
♦ ♦ ♦
CTS Frequency Products
♦
400 W. North Street
♦
Carlisle, PA 17013
♦
717-243-5929
♦ ♦ ♦
Preliminary Specification
Model 351
9x14mm Differential PECL
High Frequency VCXO
(832MHz to 1.66GHz)
Option “A”
Enable Truth Table
Pin 2
PECL “
0”
PECL “
1”
Open
Pins 4&5
Disabled
Enabled
Disabled
Option “B”
Enable Truth Table
Pin 2
PECL “
0”
PECL “
1”
Open
Pins 4&5
Enabled
Disabled
Enabled
Environmental / Mechanical Specifications
Storage Temperature:
Reflow Soldering:
Shock:
Vibration:
Case:
-55° to +125°C
will withstand 240°C for 20 Seconds
1500 G’ 0.5 mSec. Pulse (3 Shocks/Axis)
s,
10 G’ peak, 20 to 2000 Hz
s
High Temp. FR-4 Base
Ordering Information
Model 351
-- ___.________
Example: 351LAA-1333.03
351SBB-1244.16
Supply Voltage
L = +3.3Vdc
S = +5.0Vdc
Operating Temp. Range
A = 0° to +70°C
B = -40° to +85°C
Truth Table Option
A = Enable High
B = Enable Low
Frequency in MHz
♦ ♦ ♦
CTS Frequency Products
♦
400 W. North Street
♦
Carlisle, PA 17013
♦
717-243-5929
♦ ♦ ♦
Rev. 2
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