51774ASheet 1 of 5
CAGE CODESIZE
SCALE:
NONE
T.Mitchell
DATERELEASED BY
REV.
-
DRAWING NO. QT725C
C.Hooper
DATECHECKED BY Hybrid Voltage Controlled Crystal Oscillator,
+5V, Class S, Detail Specification For
E.Jackson
DATEPREPARED BY
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
Q-TECH CORPORATION
10150 W. JEFFERSON BLVD.
CULVER CITY, CA. 90232-3510
SPECIFICATION CONTROL DRAWING
Initial release
-
APPROVED
DATE
DESCRIPTION
REVISION
REVISIONS
1SCOPE
1.1Scope. This specification establishes the detail requirements for hybrid, hermetically sealed, crystal
oscillators for use in space flight missions.
1.2Part number. The part number shall be as specified in Table I herein.
2APPLICABLE DOCUMENTS
2.1Specifications and standards. Unless otherwise specified, the following documents shall be applicable to
this specification to the extent specified herein.
SPECIFICATIONS
401-0298-001 Hybrid Crystal Oscillators, Class S, General Specification For
3REQUIREMENTS
3.1General requirements. The individual item requirements shall be as specified in the General Specification
with the exceptions, modifications, and additions specified herein.
3.2Approved manufacturer. Hybrid crystal oscillators shall be supplied from the manufacturer specified in
paragraph 7.1 herein.
3.3Design and construction.
3.3.1.Outline dimensions and terminal connections. The outline dimensions and terminal connections shall be
as shown in Figure 1 herein.
3.3.2.Package body and lead finish. The package body and lead finish shall be gold in accordance with
MIL-PRF-38534.
3.3.3.Active Devices. The microcircuit used in this part shall use CMOS technology and shall be from a wafer
proven to be radiation tolerant to 100 kRad (Si) total ionizing dose.
3.3.3.1CMOS microcircuit usage. For frequencies below 12 MHZ the output microcircuit shall be Intersil
Corporation 54ACS/HCS family, Silicon on Sapphire CMOS technology. For frequencies greater than or
equal to 12 MHZ, the CMOS microcircuit shall be 54AC00, see DSSC SMD 5962-87549. This
microcircuit is specified to be single event latchup free for LET up to 93 MeV-cm2/mg. For output
frequencies from 12 MHZ to 100 MHZ, the manufacturer shall be ST Microelectronics Corporation; for
output frequencies greater than or equal to 100 MHZ, the manufacturer shall be National Semiconductor
Corporation.
3.4Performance requirements.
3.4.1.Maximum ratings. The maximum ratings shall be as specified in Table II herein.
3.4.2.Electrical performance characteristics and limits. The electrical performance requirements and limits
shall be in accordance with Table III herein.
3.4.3.Delta limits. Except for frequency aging (refer to Table III), delta limits shall be in accordance with the
General Specification.
3.4.4.Total dose radiation limits. Hybrid crystal oscillators supplied in accordance with this specification shall
be capable of meeting the performance requirements after being exposed to 100 krad total dose radiation
levels.
4QUALITY ASSURANCE PROVISIONS
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, CA. 90232
Specification number: QT725C rev -
Sheet 2 of 5
4.1General. The quality assurance provisions shall be in accordance with the General Specification with the
exceptions, modifications, and additions specified herein.
4.2Screening tests. The screening tests shall be in accordance with the General Specification.
4.3Quality Conformance Inspection. Quality Conformance Inspection shall be in accordance with the
General Specification and shall be required only when specified by the purchase order.
5PACKAGING
5.1Preservation, packaging and packing. Hybrid crystal oscillators shall be prepared for delivery in
accordance with the General specification.
6NOTES
6.1Notes. The notes of the General Specification are applicable to this drawing.
6.2Ordering information. The procuring activity shall advise Q-Tech Corporation at the time of Request for
Quotation if quality conformance inspection is to be required.
6.3Part number.QT725 C B M - 16.000000 MHZ
Model #
Supply voltage: C: + 5.0 volts
Temp stability - see Table I
Screening: E: engineering model; M: flight model
Frequency (8 digits)
±
30 PPM, - 40 °C TO
+ 85 °C
E
± 40 PPM, - 55 °C TO + 105 °CD±
B
TEMP STABILITY
OPTION
TABLE I. STABILITY / TEMPERATURE OPTIONS
7SOURCE OF SUPPLY
7.1Approved manufacturer.
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, Ca. 90232 U.S.A.
ºC/W50
θjc
Package thermal resistance ºC/seconds250/10Lead solder temperature/time
ºC
150
-
6
5
Tstg
Storage temperature
ºC125-55TC
Operating temperature Volts70VC
Control voltage
Volts
7
0
V
CC
Supply voltage
UnitsMaxMinSymbolParameter TABLE II. MAXIMUM RATINGS
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, CA. 90232
Specification number: QT725C rev -
Sheet 3 of 5
ms10STARTUP TIME
ppm
±10
70 °C ±
3
°C
FREQUENCY AGING (AFTER 1 YEAR)
ppm±1.570 °C ± 3°CFREQUENCY AGING (AFTER 30 DAYS) %60/40DUTY CYCLE 7/nS2.5>= 100 MHZ 7/nS3.512 MHZ - 100 MHZ 7/nS7Below 12 MHZ
Output frequency:
RISE / FALL TIME
N/ASquarewaveOUTPUT WAVEFORM
6
/
Vdc
V
CC
x 0.9
OUTPUT VOLTAGE - LOGIC "1"
6/VdcVCC x 0.1OUTPUT VOLTAGE - LOGIC "0" 7/-CMOSLOAD mA60100 MHZ - 150 MHZ mA4560 MHZ - 99.99 MHZ
mA
2
5
12 MHZ - 59.99 MHZ
mA12Less than 12 MHZ
Output frequency:
INPUT CURRENT
Measured without load at 5.5 Vdc
Vdc5.554.5SUPPLY VOLTAGE
kΩ50
CONTROL VOLTAGE INPUT IMPEDANCE
kHz10DCMODULATION BANDWIDTH
%±10
LINEARITY
-PositiveTRANSFER FUNCTION
5/
PPM/VOLT6040
TUNING SCALE FACTOR, AVERAGE
Vdc50CONTROL VOLTAGE (Vc) RANGE
4/PPM± 125
0 < Vc < 5
-55°C < T < +125°C
FREQUENCY DEVIATION
4/
PPM± 25
Vc = 2.5 volts (center)
T = +25°C ± 2 °C
INITIAL FREQUENCY ACCURACY
1/See Table IFREQUENCY/TEMPERATURE STABILITY MHz1500.05FREQUENCY RANGE AVAILABLE
UNITS
MAX.
NOM.
MIN.
NOTES
LIMITS
TEST CONDITIONS 2/,3/ELECTRICAL PARAMETER
TABLE Ill. ELECTRICAL PERFORMANCE CHARACTERISTICS
NOTES
1.The limit for frequency/temperature stability shall be referenced to the output frequency at 25 °C with Vc = any constant
value within the control voltage range.
2.Unless otherwise specified, the limits are over the full operating temperature range and under specified load conditions.
3.Unless otherwise specified, all measurements are in accordance with MIL-PRF-55310.
4.Referenced to nominal output frequency. Up to 30 days after shipment (does not include Aging). Center tuning voltage is
defined as Vc = 2.5 volts.
5.Slope of linear estimate (least squares) for 0 < Vc < 5V.
6.Voltage values are with respect to network ground terminal.
7.A standard CMOS load of 10 kOhm || 15 pF shall be used. See MIL-PRF-55310/26 for CMOS waveform measurement
definitions.
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, CA. 90232
Specification number: QT725C rev -
Sheet 4 of 5
.495 min.
.
2 places
.625±.005
2X .450
2X .0875
20 X .015 ±.003
18X .050 NON
-
ACCUMULATIVE
10
9
8
7
6
5
4
3
2
1
11
12
13
14
15
16
17
18
19
20
.625
±.005
VIEW FROM BOTTOM
Q
-
TECH USA
PART NUMBER
FREQUENCY
LOT DATE CODE
SERIAL NUMBER
20X
.060
.045
20 X .010 ±.002
.150 max.
ESD SYMBOL FOR PIN NO. 1
VIEW FROM TOP
NOTES:
1.Dimensions are in inches.
2.Lead numbers are for reference only and are not marked on the unit.
3.All pins with function NC may not be connected as external tie or connections, except they may be tied to
Ground.
N/C
20
GND
/C
ASE
10
N/C
19
N/
C
9
N/C18N/C8
N/C
17
N/C
7
N/C
16
N/C
6
GND/CASE *15N/C5
N/C
14
N/C
4
V
CC
13
N/C
3
GND/CASE *12N/C2
OUTPUT
11
Vc
1
CONNECTION
TERMINAL NO.
CONNECTION
TERMINAL NO.
TERMINAL CONNECTIONS
* Additional optional Ground connections are included only when microcircuit used is 54AC00 (see
paragraph 3.3.3.1), and may be connected to circuit ground plane for minimum overshoot/ringing
when driving capacitive loads.
FIGURE 1. PACKAGE DIMENSIONS AND TERMINAL CONNECTIONS
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, CA. 90232
Specification number: QT725C rev -
Sheet 5 of 5