1794
Series
ELECTRICAL CHARACTERISTICS
Nominal Frequency
Initial Frequency Accuracy
@+25 C with the Control Voltage @ +2.50 VDC
Temperature Stability including ±10% Load
Change and ±5% Input Voltage change
Input Voltage
RF Output
Duty Cycle
Logic 0
Logic 1
Rise Time
Fall Time
Load
Voltage Control Function
Control Voltage Range
Frequency Deviation
(with respect to nominal frequency)
Linearity
Input Impedance
Aging: 10 to 25 MHz
26 to 40 MHz
ABOLUTE MAXIMUM RATINGS
Supply Voltage
DC Input Current
Storage Temperature range
Lead Temperature (Soldering, 10 seconds)
VCXO
10 to 40 MHz
±20 PPM
See Table I
+5Vdc ± 5%
25 mA max
CMOS Squarewave
40 / 60%measured at 50% amplitude level
0.5 V MAX
4.0 V MIN
5 nsec max measured from 10% to 90% levels
5 nsec measured from 90% to 10% levels
Tested with 2 CMOS Loads but capable of driving up
to 10.
0.50 to 4.50 VDC
See Table I
±20% maximum
>10K
±2 PPM 1st year & ±10 PPM for 10 years
±3 PPM 1st year & ±15 PPM for 10 years
-0.5 to +6.00 VDC
50 mA maximum
-62 C to +125 C
300 C
Vectron International Custom Datasheet
Revision Date : 6-14-05 SEM
Date Printed: 2005-07-08
1/5
Vectron International LLP
100 Watts Street Mount Holly Springs, Pennsylvania 17065, USA Tel 1-717-486-3411 Fax 1-717-486-5920 www.vectron.com
Vectron International
Landstrasse D-74924 Neckarbischofsheim, Germany Tel +49-7268-801-0 Fax +49-07268-801-281 www.corningfrequency.de
1794
Series
ENVIRONMENTAL CHARACTERISTICS
Sine Vibration
Mil-STD-202, Method 204, TC D
Random Vibration Mil-STD-202, Method 214 TC I-K (15 minutes per axis)
Shock
Acceleration
Altitude
Radiation
Mil-STD-202, Method 213, TC F
Mil-STD-883, Method 2001, TC A
50,000 feet minimum to deep space
VCXO
Radiation testing is not performed, but these VCXOs have been acceptable for use in
environments up to 100K rads by analysis of the components used. They are
assembled with all bipolar semiconductors with the exception of the ACMOS chip
used for the CMOS output which is purchased from a wafer that has been tested to a
minimum of 100K rads total dose. A copy of the parts list and materials can be
provided for review.
TABLE I
FREQUENCY STABILITY and
FREQUENCY DEVIATION OPTIONS
These limits guarantee that under the worse case conditions of temperature, supply voltage, load stability
and 10 years aging, that the oscillator can be pulled back on to nominal frequency with the Control
Voltage function.
OPTION
FREQUENCY STABILITY
FREQUENCY DEVIATION
A
B
C
D
20 PPM 0
o
C to +50
o
C
25 PPM -20
o
C to +70
o
C
30 PPM -40
o
C to +85
o
C
40 PPM -55
o
C to +105
o
C
65 PPM minimum
70 PPM minimum
75 PPM minimum
85 PPM minimum
Vectron International Custom Datasheet
Revision Date : 6-14-05 SEM
Date Printed: 2005-07-08
2/5
Vectron International LLP
100 Watts Street Mount Holly Springs, Pennsylvania 17065, USA Tel 1-717-486-3411 Fax 1-717-486-5920 www.vectron.com
Vectron International
Landstrasse D-74924 Neckarbischofsheim, Germany Tel +49-7268-801-0 Fax +49-07268-801-281 www.corningfrequency.de
1794
Series
TABLE II
CONSTRUCTION, SCREENING & TESTING OPTIONS
VCXO
NOTE: For Engineering or Prototype VCXOs requiring basic electrical testing only and no Screening, or Groups A and
B Testing, use the code letter E .
Option Code
S
R
C
B
Operation
Mil-PRF-55310
Mil-PRF-55310
Mil-PRF-55310
Mil-PRF-55310
Design, Construction
Class S
Class B
Class B
Class B
& Component Screen
(see Mfging Section)
M883, Method 2017 M883, Method 2017
M883, Method 2017
M883, Method 2017
Workmanship
for Class S
for Class B
for Class B
for Class B
Mil-PRF-55310
Mil-PRF-55310
Mil-PRF-55310
Mil-PRF-55310
Screening
Class S
Class S
Class B modified
Class B
Non-Destruct Wire
100%
100%
N/A
N/A
Bond Pull
Internal Visual
M883, Method 2017 M883, Method 2017
M883, Method 2017
M883, Method 2017
for Class S
for Class B
for Class B
for Class B
Stabilization Bake
48 hrs minimum @
48 hrs minimum @
48 hrs minimum @
48 hrs minimum @
+150 C
+150 C
+150 C
+150 C
Thermal Shock
M883, Method 1011,
M883, Method
N/A
N/A
TC A
1011, TC A
Temperature Cycling
M883, Method 1010,
M883, Method
M883, Method 1010, M883, Method 1010,
TC B
1010, TC B
TC B
TC B
Constant Acceleration
M883, Method 2001,
M883, Method
M883, Method 2001, M883, Method 2001,
TC A (5000 gs, Y1 2001, TC A (5000
TC A (5000 gs, Y1
TC A (5000 gs, Y1
Axis only)
gs, Y1 Axis only)
Axis only)
Axis only)
Seal Test
100%
100%
100%
100%
(fine & gross)
PIND
M883, Method 2020,
M883, Method
M883, Method 2020,
N/A
TC B
2020, TC B
TC B
Electrical Test
@ +25 C only
@ +25 C only
@ +25 C only
@ +25 C only
Frequency, Output
levels, Input Current
Burn-In
+125 C for 240
+125 C for 240
+125 C for 160 hours +125 C for 160 hours
(Powered with load)
hours
hours
Electrical Test
@ +25 C & Temp
@ +25 C & Temp
@ +25 C & Temp
@ +25 C & Temp
Frequency, Output
Extremes specified
Extremes specified
Extremes specified
Extremes specified
levels, Input Current
in Table II
in Table II
in Table II
in Table II
PDA
2% applies to Input
2% applies to Input
10% applies to Input
10% applies to Input
Current @ +25 C
Current @ +25 C
Current @ +25 C
Current @ +25 C
Radiographic
M883, Method 2012 M883, Method 2012
N/A
N/A
Group A
Group B
(30 day Aging @
+70 C)
100%
100%
100%
100%
Sample per
Mil-PRF-55310
Sample per
Mil-PRF-55310
Sample per
Mil-PRF-55310
Sample per
Mil-PRF-55310
Vectron International Custom Datasheet
Revision Date : 6-14-05 SEM
Date Printed: 2005-07-08
3/5
Vectron International LLP
100 Watts Street Mount Holly Springs, Pennsylvania 17065, USA Tel 1-717-486-3411 Fax 1-717-486-5920 www.vectron.com
Vectron International
Landstrasse D-74924 Neckarbischofsheim, Germany Tel +49-7268-801-0 Fax +49-07268-801-281 www.corningfrequency.de
1794
Series
MANUFACTURING INFORMATION
TRAVELLERS
VCXO
Travellers or Process Cards are used in the manufacturing and testing of all of the 1794 Series VCXOs and
are available for customer review. Copies of these Travellers can be provided with the VCXOs at time of
shipment if so specified on the purchase order.
TRACEABILITY and HOMOGENEOUS MATERIAL
Option Codes S & R only
Manufacturing lot and date code information shall be recorded, by VCXO serial number, of every component
and all materials used in the manufacture of that VCXO. Also all semiconductors used in the manufacture of
any given Production Lot of VCXOs, shall be from the wafer and have the same manufacturing lot date code.
A Production Lot, as defined by Corning, is all oscillators that have been kitted and assembled as a single
group. After the initial kitting and assembly, this Production Lot may be divided into multiple sublots to
facilitate alignment and test capacity and may be sealed at multiple times within a 13 week window.
TEST DATA
All Test Data is recorded by VCXO serial number. Copies of this data can be provided with the VCXOs at time
of shipment if so specified on the purchase order.
REWORK
All rework follows the requirements of Mil-PRF-55310 Class S for Option Code S and Class B for Option
Codes R , B and C . The only exception is the Select-At-Test components may be replaced up to four times.
PART NUMBER BREAKDOWN
1794 E 25M000000 S N
MMSeries Model #
N No special requirements
S Special requirements
specified on P. O.
Screening Option from Table III
Frequency (total of 9 characters)
Frequency
Stability
Vectron International Custom Datasheet
Revision Date : 6-14-05 SEM
Date Printed: 2005-07-08
4/5
Vectron International LLP
100 Watts Street Mount Holly Springs, Pennsylvania 17065, USA Tel 1-717-486-3411 Fax 1-717-486-5920 www.vectron.com
Vectron International
Landstrasse D-74924 Neckarbischofsheim, Germany Tel +49-7268-801-0 Fax +49-07268-801-281 www.corningfrequency.de
1794
Series
Mechanical Outline and Pin Connections
VCXO
Vectron International Custom Datasheet
Revision Date : 6-14-05 SEM
Date Printed: 2005-07-08
5/5
Vectron International LLP
100 Watts Street Mount Holly Springs, Pennsylvania 17065, USA Tel 1-717-486-3411 Fax 1-717-486-5920 www.vectron.com
Vectron International
Landstrasse D-74924 Neckarbischofsheim, Germany Tel +49-7268-801-0 Fax +49-07268-801-281 www.corningfrequency.de
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