Q-Tech QT822 User Manual
CONSULT FACTORY FOR CURRENT REVISION
REVISIONS
REVISION
DESCRIPTION
APPROVED
DATE
A
Updated part numbers
Luis Vargas
1/9/09
B
Edited Part Numbers
Luis Vargas
6/21/2009
C
Edited
Luis Vargas
12/2/2010
D
Add par. 3.4.2 Logic microcircuits and Radiation characteristics (
ECO# 10527)
C. Albright
4/2/12
E
Changed par. 3.1.1 split supply and load variation from frequency
stability Vs. temperature characteristics, phase noise limits @10Hz
and 100 Hz) ( ECO# 10548)
C. Albright
4/26/12
SPECIFICATION CONTROL DRAWING
Q-TECH CORPORATION
10150 W. JEFFERSON BLVD.
CULVER CITY, CA 90232-3510
PREPARED BY:
Luis Vargas
DATE
4/25/12
LOW PROFILE 32 PIN Flat-Pack HYBRID CRYSTAL
OSCILLATOR, TCXO, CLASS S,
Standard Design For HCMOS up to 90MHz
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCHES.
TOLERANCES:
3 PLACE DECIMAL = .005
2 PLACE DECIMAL = .02
1 PLACE DECIMAL = .1
FRACTIONS = ± 1/16
ANGLES = 2 DEGREES
CHECKED BY:
B. Remtulla
DATE
4/26/12
DRAWING NO.:
QT821 and QT822
Square-Wave
REVISION
E
RELEASED BY:
P. Steinblums 4/26/12
APPROVED BY:
C. Albright
DATE
4/26/12
SCALE
NONE
SIZE
A
CAGE CODE
51774
SHEET 1 of 10
50MHz TCXO ,Vcc=12v,+25ºC
9/17/08
-180
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
110100100010000100000
Frequency Offset, HZ
L(f), dBc
0
0.05
0.1
0.15
0.2
0.25
0.3
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
frequency drift, PPM
elapsed time, days
Aging Data
-50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 35 90
temp, deg
freq error, PPM
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
Example 2 of Temperature Stability
Example 1 of Temperature Stability
temp, deg
freq error, PPM
ITAR-CONTROLLED Q-TECH PROPRIETARY DO NOT COPY OR DISTRIBUTE WITHOUT Q-TECH APPROVAL
QT821 and QT822 Square-Wave
32 PIN Flat-Pack
REV.
Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
SIZE
A
CAGE NO.
51774
Sheet 2 of 10
E
1.0 SCOPE
This specification establishes the detail requirements for low profile hybrid, hermetically sealed,
HCMOS output temperature compensated crystal oscillators (TCXO) for use in space flight missions
2.0 APPLICABLE DOCUMENTS
The following documents of the latest issue form a part of this drawing to the extent specified herein.
2.1 Specifications and Standards
SPECIFICATIONS
MILITARY
MIL-S-19500
Semiconductor Devices, General Specification For
MIL-PRF-55310
Crystal Oscillators, General Specification For
MIL-PRF-38535
Integrated Circuits, (Microcircuits) Manufacturing, General Specification For
MIL-PRF-38534
Hybrid Microcircuits, General Specification For
STANDARDS
MILITARY
MIL-STD-202
Test Methods for Electronic and Electrical Component Parts
MIL-STD-883
Test Methods and Procedures for Microelectronics
MIL-STD-1686
Electrostatic Discharge Control Program for Protection of Electrical and Electronics Parts,
Assemblies and Equipment.
2.2 Conflicting Requirements
In the event of conflict between requirements of this specification and other requirements of the
applicable detail drawing, the precedence in which requirements shall govern, in descending order, is
as follows:
a) Applicable Customer purchase order.
b) Applicable detail drawing.
c) This specification.
d) Other specifications or standards referenced in 2.1 herein.
2.3 Customer Purchase Order Special Requirements
Additional special requirements shall be specified in the applicable Customer purchase order when
additional requirements or modifications specified herein are needed for compliance to special
program or product line requirements.
3.0 PERFORMANCE REQUIREMENTS
3.1 General Definition
The TCXO is a high reliability signal generator that provides a square-wave output. The TCXO has
been designed to operate in a spaceflight environment with an expected lifetime in excess of 15 years.
Lifetime is defined as the sum of operational and storage environments.
ITAR-CONTROLLED Q-TECH PROPRIETARY DO NOT COPY OR DISTRIBUTE WITHOUT Q-TECH APPROVAL
QT821 and QT822 Square-Wave
32 PIN Flat-Pack
REV.
Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
SIZE
A
CAGE NO.
51774
Sheet 3 of 10
E
3.1.1 Electrical Characteristics
PARAMETER
SYMBOL
CONDITIONS
VALUE
UNIT
Frequency Nom.
fo - 3. to 90
MHz
Supply voltage, Nom.
Vs
Vs±5%
See part number
generation table
V
Input Current, max.
Is
Vs, nom. / Ta=+25°C
50
mA
Freq. stability vs. Operating
temperature
Δf/fc (Ta)
Contact factory for other options
available
See part number
generation table
ppm
Electrical Frequency
Adjustment Min.
(when specified)
Δf/fo
(ΔVcc)
±5 PPM Two options:
1) via an external select-at-test
resistor connected from Pin 1
to Ground
2) Via External tuning voltage
±5.0
ppm
Freq. stability vs. ±5 %
Input Voltage Variation
Δf/fc (Vs)
Ta=+25°C
±1.2
ppm
Freq. stability vs. ±5 %
Load Variation
Δf/fc
(Load)
Vs, nom. / Ta=+25°C
0.3
ppm
Aging Max
Δf/fo
over 10 year (first year ≤ 1 ppm)
±5.0
ppm
Freq. stability vs. Vacuum
Δf/fo
Met by design, not tested
±0.2
ppm
Short term stability
Δf/fc(Δt)
Δt=1sec. (Allan Deviation)
0.001
ppm
RF Output
Contact factory for other options
available
30 to 70
3rd
70.1 to
90
3rd X
MHz
Output
VOH / VOL
load=15pF, Vcc=nom.
0.9•Vcc / 0.1•Vcc
V
Duty cycle
DC
load=15pF/ @50%Vcc, Ta=+25°C
See part number
generation table
%
Rise- / fall time
tr / tf
20%~80% Vout, 80%~20% Vout
.5…7 (see note A)
nSec
Load
15
pF
Phase noise @ freq. offset
£ (Δf)
£ (Δf)
£ (Δf)
£ (Δf)
£ (Δf)
Δf=10Hz
Δf=100Hz
Δf=1kHz
Δf=10kHz
Δf=100kHz
-70
-100
-130
-140
-140
70.1 to 90
MHZ
Contact
factory for
other
options
available
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
A:
Supply Current, rise & fall time are frequency dependent
3.2 Absolute Maximum Rating
Notes: 1 – Without irreversible damages
CHARACTERISTICS
MAXIMUM RATINGS
REMARKS
Supply Voltage
0 to +6.0 VDC
Note 1
DC Input Current
50 mA maximum
Note 1
Storage Temperature range
-55°C to +125°C
Note 1
Lead Temperature (Soldering, 10 seconds)
300°C
Note 1
ITAR-CONTROLLED Q-TECH PROPRIETARY DO NOT COPY OR DISTRIBUTE WITHOUT Q-TECH APPROVAL
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