REVISIONS
REVISION
-
Initial release
DESCRIPTION
DATE
APPROVED
SPECIFICATION CONTROL DRAWING
PREPARED BY
DATE
Q-TECH CORPORATION
10150 W. JEFFERSON BLVD.
CULVER CITY, CA. 90232-3510
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
E.Jackson
CHECKED BY
DATE
Hybrid Voltage Controlled Crystal Oscillator,
+5V, Class S, Detail Specification For
DRAWING NO.
REV.
C.Hooper
RELEASED BY
DATE
QT725C
SCALE:
SIZE
CAGE CODE
-
Sheet 1 of 5
T.Mitchell
NONE
A
51774
1
1.1
1.2
2
2.1
SCOPE
Scope. This specification establishes the detail requirements for hybrid, hermetically sealed, crystal
oscillators for use in space flight missions.
Part number. The part number shall be as specified in Table I herein.
APPLICABLE DOCUMENTS
Specifications 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
3
3.1
3.2
3.3
3.3.1.
3.3.2.
3.3.3.
3.3.3.1
REQUIREMENTS
General requirements. The individual item requirements shall be as specified in the General Specification
with the exceptions, modifications, and additions specified herein.
Approved manufacturer. Hybrid crystal oscillators shall be supplied from the manufacturer specified in
paragraph 7.1 herein.
Design and construction.
Outline dimensions and terminal connections. The outline dimensions and terminal connections shall be
as shown in Figure 1 herein.
Package body and lead finish. The package body and lead finish shall be gold in accordance with
MIL-PRF-38534.
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.
CMOS 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-cm
2
/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.
Performance requirements.
Maximum ratings. The maximum ratings shall be as specified in Table II herein.
Electrical performance characteristics and limits. The electrical performance requirements and limits
shall be in accordance with Table III herein.
Delta limits. Except for frequency aging (refer to Table III), delta limits shall be in accordance with the
General Specification.
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.
QUALITY ASSURANCE PROVISIONS
Specification number:
QT725C rev -
Sheet 2 of 5
3.4
3.4.1.
3.4.2.
3.4.3.
3.4.4.
4
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, CA. 90232
4.1
4.2
4.3
General. The quality assurance provisions shall be in accordance with the General Specification with the
exceptions, modifications, and additions specified herein.
Screening tests. The screening tests shall be in accordance with the General Specification.
Quality Conformance Inspection. Quality Conformance Inspection shall be in accordance with the
General Specification and shall be required only when specified by the purchase order.
PACKAGING
Preservation, packaging and packing. Hybrid crystal oscillators shall be prepared for delivery in
accordance with the General specification.
NOTES
Notes. The notes of the General Specification are applicable to this drawing.
Ordering information. The procuring activity shall advise Q-Tech Corporation at the time of Request for
Quotation if quality conformance inspection is to be required.
Part number.
Model #
Supply voltage: C: + 5.0 volts
Temp stability - see Table I
Screening: E: engineering model; M: flight model
Frequency (8 digits)
TABLE I. STABILITY / TEMPERATURE OPTIONS
OPTION
TEMP STABILITY
B
±
50 PPM, - 55 °C TO + 125 °C
D
±
40 PPM, - 55 °C TO + 105 °C
E
±
30 PPM, - 40 °C TO + 85 °C
QT725 C B M - 16.000000 MHZ
5
5.1
6
6.1
6.2
6.3
7
7.1
SOURCE OF SUPPLY
Approved manufacturer.
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, Ca. 90232 U.S.A.
TABLE II. MAXIMUM
Symbol
V
CC
V
C
T
C
Tstg
RATINGS
Min
0
0
-55
-65
Parameter
Supply voltage
Control voltage
Operating temperature
Storage temperature
Lead solder temperature/time
Package thermal resistance
θ
jc
Max
7
7
125
150
250/10
50
Units
Volts
Volts
ºC
ºC
ºC/seconds
ºC/W
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, CA. 90232
Specification number:
QT725C rev -
Sheet 3 of 5
TABLE Ill. ELECTRICAL PERFORMANCE CHARACTERISTICS
ELECTRICAL PARAMETER
FREQUENCY RANGE AVAILABLE
FREQUENCY/TEMPERATURE STABILITY
INITIAL FREQUENCY ACCURACY
FREQUENCY DEVIATION
CONTROL VOLTAGE (Vc) RANGE
TUNING SCALE FACTOR, AVERAGE
TRANSFER FUNCTION
LINEARITY
MODULATION BANDWIDTH
CONTROL VOLTAGE INPUT IMPEDANCE
SUPPLY VOLTAGE
Output frequency:
INPUT CURRENT
Measured without load at 5.5 Vdc
Less than 12 MHZ
12 MHZ - 59.99 MHZ
60 MHZ - 99.99 MHZ
100 MHZ - 150 MHZ
LOAD
OUTPUT VOLTAGE - LOGIC "0"
OUTPUT VOLTAGE - LOGIC "1"
OUTPUT WAVEFORM
Output frequency:
RISE / FALL TIME
Below 12 MHZ
12 MHZ - 100 MHZ
>= 100 MHZ
DUTY CYCLE
FREQUENCY AGING (AFTER 30 DAYS)
FREQUENCY AGING (AFTER 1 YEAR)
STARTUP TIME
70 °C ± 3°C
70 °C ± 3°C
60/40
±1.5
±10
10
7
3.5
2.5
nS
nS
nS
%
ppm
ppm
ms
7/
7/
7/
V
CC
x 0.9
Squarewave
CMOS
V
CC
x 0.1
12
25
45
60
mA
mA
mA
mA
-
Vdc
Vdc
N/A
7/
6/
6/
DC
50
TEST CONDITIONS 2/,3/
MIN.
0.05
LIMITS
NOM.
See Table I
NOTES
UNITS
MHz
1/
MAX.
150
Vc = 2.5 volts (center)
T = +25°C ± 2 °C
0 < Vc < 5
-55°C < T < +125°C
± 125
0
40
Positive
± 25
PPM
PPM
4/
4/
5
60
Vdc
PPM/VOLT
-
5/
±10
10
%
kHz
kΩ
4.5
5
5.5
Vdc
NOTES
1.
2.
3.
4.
5.
6.
7.
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.
Unless otherwise specified, the limits are over the full operating temperature range and under specified load conditions.
Unless otherwise specified, all measurements are in accordance with MIL-PRF-55310.
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.
Slope of linear estimate (least squares) for 0 < Vc < 5V.
Voltage values are with respect to network ground terminal.
A standard CMOS load of 10 kOhm || 15 pF shall be used. See MIL-PRF-55310/26 for CMOS waveform measurement
definitions.
Specification number:
QT725C rev -
Sheet 4 of 5
Q-Tech Corporation
10150 W. Jefferson Blvd.
Culver City, CA. 90232
ESD SYMBOL FOR PIN NO. 1
Q-TECH
USA
PART NUMBER
FREQUENCY
LOT DATE CODE
SERIAL NUMBER
.150 max.
.060
20X .045
20 X .010 ±.002
VIEW FROM TOP
.625
±.005
18X .050 NON-ACCUMULATIVE
10
9
8
7
6
5
4
3
2
1
11
12
13
14
15
16
17
18
19
20
.495 min.
2. places
2X .450
.625±.005
2X .0875
20 X .015 ±.003
VIEW FROM BOTTOM
NOTES:
1.
2.
3.
Dimensions are in inches.
Lead numbers are for reference only and are not marked on the unit.
All pins with function NC may not be connected as external tie or connections, except they may be tied to
Ground
.
TERMINAL CONNECTIONS
TERMINAL NO.
1
2
3
4
5
6
7
8
9
10
CONNECTION
Vc
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
GND/CASE
TERMINAL NO.
11
12
13
14
15
16
17
18
19
20
CONNECTION
OUTPUT
GND/CASE *
V
CC
N/C
GND/CASE *
N/C
N/C
N/C
N/C
N/C
* 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
京公网安备 11010802033920号
EEWORLD
