REVISIONS
REVISION
DESCRIPTION
APPROVED
DATE
-
A
Initial Release
Updated part numbers
Luis Vargas
Luis Vargas
6/5/2008
1/9/09
GENERAL RELEASE DOCUMENT
CONSULT FACTORY FOR CURRENT REVISION
50MHz TCXO ,Vcc=12v,+25ºC
9/17/08
-30
-40
-50
-60
-70
-80
Aging Data
0.3
0.25
frequency drift, PPM
1
10
100
1000
10000
100000
0.2
L(f), dBc
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
0.15
0.1
0.05
0
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 Offset, HZ
elapsed time, days
Example 1 of Temperature Stability
2.0
1.5
Example 2 of Temperature Stability
1.0
freq error, PPM
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-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
85
90
temp, deg C
SPECIFICATION CONTROL DRAWING
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
RELEASED BY:
DOCUMENT CONTROL
PREPARED BY:
Luis Vargas
CHECKED BY:
QUALITY
DATE
6/5/08
DATE
Q-TECH CORPORATION
10150 W. JEFFERSON BLVD.
CULVER CITY, CA 90232-3510
LOW PROFILE 32 PIN Flat-Pack HYBRID CRYSTAL
OSCILLATOR, TCXO, CLASS S,
Standard Design For HCMOS up to 90MHz
DRAWING NO.:
REVISION
QT821 and QT822
Square-Wave
A
APPROVED BY:
ENGINEERING
DATE
SCALE
SIZE
CAGE CODE
NONE
A
51774
SHEET 1 of 8
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
MIL-STD-883
MIL-STD-1686
Test Methods for Electronic and Electrical Component Parts
Test Methods and Procedures for Microelectronics
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
3.1
PERFORMANCE REQUIREMENTS
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.
Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
QT821 and QT822 Square-Wave
SIZE
CAGE NO.
REV.
A
A
51774
Sheet 2 of 8
3.1.1
Electrical Characteristics
SYMBOL
CONDITIONS
fo
-
Vs
Vs±5%
Is
Vs, nom. / Ta=+25°C
Δf/fc
(Ta)
Contact factory for other options
available
PARAMETER
Frequency Nom.
Supply voltage, Nom.
Input Current, max.
Freq. stability vs.
temperature
(including ±5% Load
Change and ±5% Input
Voltage change)
Electrical Frequency
Adjustment Min.
(when specified)
VALUE
2. to 90
See part number
generation table
UNIT
MHz
V
mA
ppm
50
See part number
generation table
Δf/fo
(ΔVcc)
Aging Max
Freq. stability vs. Vacuum
Short term stability
RF Output
Δf/fo
Δf/fo
Δf/fc(Δt)
±5 PPM Two options:
1) via an external select-at-test
resistor connected from Pin 1
to Ground
2) Via External tuning voltage
over 10 year (first year
≤
1 ppm)
Met by design, not tested
Δt=1sec.
(Allan variance)
Contact factory for other options
available
±5.0
ppm
Output
Duty cycle
Rise- / fall time
Load
Phase noise @ freq. offset
VOH /
VOL
DC
tr / tf
load=15pF, Vcc=nom.
load=15pF/ @50%Vcc,
Ta=+25°C
20%~80% Vout, 80%~20%
Vout
Δf=10Hz
Δf=100Hz
Δf=1kHz
Δf=10kHz
Δf=100kHz
frequency dependent
±5.0
±0.2
0.001
30 to 70
70.1 to
3rd
90
3
rd
X
0.9•Vcc / 0.1•Vcc
See part number
generation table
ppm
ppm
ppm
MHz
V
%
nSec
pF
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
.5…7 (see note A)
15
-75
-105
-130
-140
-140
Contact
factory
for other
options
available
£ (Δf)
£ (Δf)
£ (Δf)
£ (Δf)
£ (Δf)
A:
Supply Current, rise & fall time are
3.2
Absolute Maximum Rating
Supply Voltage
DC Input Current
Storage Temperature range
Lead Temperature (Soldering, 10 seconds)
0 to +6.0 VDC
50 mA maximum
-62°C to +125°C
300°C
3.2.1
Physical Characteristics
3.2.1.1 Dimensions - The TCXO outline dimensions and terminal connections shall be as shown in Figure 1
herein.
3.2.1.2 Weight - The TCXO shall weigh less than or equal to 15 grams.
3.2.1.3 Materials - The TCXO package body and lead finish shall be gold in accordance with MIL-PRF-38534.
Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
QT821 and QT822 Square-Wave
SIZE
CAGE NO.
REV.
A
A
51774
Sheet 3 of 8
3.2.2
Environmental Conditions
MIL-STD-202, Method 204, TC “D”
MIL-STD-202, Method 214 TC “I-K” (15 minutes per axis)
MIL-STD-202, Method 213, TC “F”
MIL-STD-883, Method 2001, TC “A”
50,000 feet minimum to deep space
Radiation testing is not performed, but these TCXOs have been acceptable for
use in environments up to 100K rads by analysis of the components used.
Bipolar semiconductors are employed in combination with a CMOS microcircuit
in this part and shall be from a wafer proven to be radiation tolerant to 100
kRad (Si) total ionizing dose. This device is specified to be single event latchup
free for LET up to 93 MeV-cm2/mg.. A copy of the parts list and materials can
be provided for review.
The TCXO supplied to this drawing shall be considered to be electrostatic
discharge sensitive and require further protection and shall use one of the
packaging requirements in accordance with MIL-PRF-38534, Category A,
Section 5.3.2.4 Transportability.
The TCXO shall be capable of being transported by air, ship or road when
packaged in a suitable container.
Sine Vibration
Random Vibration
Shock
Acceleration
Altitude
Radiation
Electrostatic Discharge Sensitivity
3.3
Design and Construction
The design and construction of the crystal oscillator shall be as specified herein. As a minimum, the
oscillators shall meet the design and construction requirements of MIL-PRF-55310, except element
evaluation shall be as specified in 3.3.1
Operation
Design, Construction &
Component Screen (see 3.3.2)
Workmanship
Screening
Non-Destruct Wire Bond Pull
Internal Visual
MIL-PRF-55310 Class S
M883, Method 2017 for Class S
MIL-PRF-55310 Class S
100%, M883, Method 2023 (2.4 grams)
MIL-STD-883, methods 2017 & 2032 condition K (class S). During the time
interval between final internal visual inspection and preparation for sealing,
hybrid crystal oscillators shall be stored in a dry, controlled environment as
defined in MIL-STD-883, method 2017 or in a vacuum bake oven.
48 hrs minimum @ +150 C M883, Method 1008 TC B
M883, Method 1011, TC A
M883, Method 1010, TC B
M883, Method 2001, TC A (5000 gs, Y1 Axis only)
100% Method 1014, (TC A1 for fine leak and TC C for gross leak)
M883, Method 2020, TC B
Frequency, Output levels, Input Current@ +25 C
+125 C for 240 hours
Frequency, Output levels, Input Current
@ +25°C & Temp Extremes listed on the Electrical Specification
M883, Method 2012 class S
100%
100%
883 Method 2009
Stabilization Bake
Thermal Shock
Temperature Cycling
Constant Acceleration
Seal Test (fine & gross)
PIND
Electrical Test
Burn-In (Powered with load)
Electrical Test
Radiographic
Group A
Group B (30 day Aging @ +70 C)
External visual
Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
QT821 and QT822 Square-Wave
SIZE
CAGE NO.
REV.
A
A
51774
Sheet 4 of 8
3.3.1
All piece parts shall be derived from lots that meet the element evaluation requirements of MIL-PRF-
38534, Class K, with the following exceptions:
Active elements
a) Visual inspection of silicon on sapphire microcircuits. Semicircular crack(s) or multiple
adjacent cracks, not in the active area, starting and terminating at the edge of the die
are acceptable. Attached (chip in place) sapphire is nonconductive material and shall
not be considered as foreign material and will be considered as nonconductive material
for all inspection criteria.
b) Subgroup 4, Scanning Electron Microscope (SEM) inspection. The manufacturer may
allow the die distributor, at his option, to select two (2) dice from a waffle pack
(containing a maximum quantity of 100 die), visually inspect for the worst case
metallization of the 2 dice, and take SEM photographs of the worst case.
c) Subgroup 5 radiation tests. Subgroup 5 radiation tests are not required unless
otherwise specified in the detail purchase order.
3.3.2
Processes -
Processes used for manufacturing the TCXO are selected on the basis of their ability to
meet the quality requirements for space High Reliability manufacturing. Travelers or Process Cards are
used in the manufacturing and testing of all of the TCXO Series, and might be available for customer
review. Copies of these Travelers can be provided with the TCXOs at time of shipment if so specified
on the purchase order.
Interchangeability - Each TCXO shall be interchangeable without using a special selection process.
Product Marking - Each unit shall be permanently marked with the manufacturer's name or symbol,
part number, lot date code number, and serial number. The unit shall be marked with the outline of
an equilateral triangle near pin 1 to show that it contains devices which are sensitive to electrostatic
discharge.
Parts Program
Devices delivered to this specification represent the standardized Parts, Materials and Processes (PMP)
Program developed, implemented and certified for advanced applications and extended environments.
3.3.3
3.3.4
3.4
3.4.1
Quartz Crystal Resonator - The crystal resonator used shall be constructed using premium synthetic
swept Quartz and procured to Q-TECH SCD. For the Engineering models, non-swept quartz may be
used.
Traceability Requirements
Material, element and process traceability requirements shall be as specified by MIL-PRF-38534 for
Class K hybrids.
3.5
3.6
Data
3.6.1. Design Documentation - When required by the purchase order, design, topography, process and flow
charts for all assembly/inspection and test operation for devices to be supplied under this specification
on the initial procurement shall be established and shall be available in-plant for review by the
procuring activity upon request. This design documentation shall be sufficient to depict the physical
and electrical construction of the devices supplied under the specification and shall be traceable to the
specific parts, drawings or part type numbers to which it applies, and to the production lot(s) and
QT821 and QT822 Square-Wave
SIZE
CAGE NO.
REV.
A
Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
A
51774
Sheet 5 of 8
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