1
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT78 SERIES
HIGH RELIABILITY MINIATURE CRYSTAL CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Q-TECH
CORPORATION
QT78 (Revision H, January 2011) (ECO #10085)
Applications
• Designed to meet today’s requirements for low
voltage applications
• Wide military clock applications
• Smart munitions
• Navigation
• Industrial controls
• Microcontroller driver
0.170 MAX.
0.018±.003
(0.46±0.08)
(4.318 MAX.)
0.550±.0.005
(13.970±0.13)
0.350±0.005
(8.89±0.13)
0.100±.005
0.200±.005
(2.54±0.13)
(5.080±0.13)
(7.620±0.13)
(9.525 max.)
P/N
FREQ.
D/C S/N
Q-TECH
43
12
.130 MAX.
0.300±.005
0.375 max.
3.302 MAX.
Package Specifications and Outline
Dimensions are in inches (mm)
Pin No.
Function
1
TRISTATE or NC
2
GND/CASE
3
OUTPUT
4
VDD
0.39
(9.91)
0.13
(3.30)
0.13
(3.30)
0.07
(1.78)
0.20
(5.08)
0.27
(6.86)
• Package material: 90% AL2O3
• Lead material: Kovar
• Lead finish: Gold Plated: 50μ ~ 80μ inches
Nickel Underplate: 100μ ~ 250μ inches
• Weight: 1.1g typ., 3.0g max.
Description
Q-Tech’s surface-mount QT78 Series oscillators consist
of an IC 5Vdc, 3.3Vdc, 2.5Vdc, 1.8Vdc clock square
wave generator and a round AT high-precision quartz
crystal built in a rugged surface-mount ceramic J-lead
miniature package.
Features
• Made in the USA
• ECCN: EAR99
• DFARS 252-225-7014 Compliant:
Electronic Component Exemption
• USML Registration # M17677
• Available as QPL MIL-PRF-55310/27, /28, and /30
• Broad frequency range from 15kHz to 150MHz
• Rugged 4 point mount design for high shock and
vibration
• ACMOS, HCMOS, TTL or LVHCMOS logic
• Tri-State Output Option (D)
• Hermetically sealed ceramic SMD package
• Fundamental and 3rd Overtone designs
• Low phase noise
• Custom designs available
• Q-Tech does not use pure lead or pure tin in its
products
• RoHS compliant
Package Information
2
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT78 (Revision H, January 2011) (ECO #10085)
Electrical Characteristics
QT78 SERIES
HIGH RELIABILITY MINIATURE CRYSTAL CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Parameters QT78AC QT78HC QT78T QT78L QT78N QT78R
Output frequency range (Fo) 15kHz — 85.000MHz (*) 15kHz — 150.000MHz (*) 125.000kHz — 133.000MHz 125.000kHz — 100.000MHz
Supply voltage (Vdd) 5.0Vdc ± 10% 3.3Vdc ± 10% 2.5Vdc ± 10% 1.8Vdc ± 10%
Maximum Applied Voltage
(Vdd max.) -0.5 to +7.0Vdc -0.5 to +5.0Vdc
Frequency stability (∆F/∆T) See Option codes
Operating temperature (Topr) See Option codes
Storage temperature (Tsto) -62ºC to + 125ºC
Operating supply current
(Idd) (No Load)
20 mA max. - 15kHz ~ < 16MHz
25 mA max. - 16MHz ~ < 32MHz
35 mA max. - 32MHz ~ < 60MHz
45 mA max. - 60MHz ~ ≤ 85MHz
3 mA max. - 15kHz ~ < 500kHz
6 mA max. - 500kHz ~ < 16MHz
10 mA max. - 16MHz ~ < 32MHz
20 mA max. - 32MHz ~ < 60MHz
30 mA max. - 60MHz ~ < 100MHz
40 mA max. - 100MHz ~ < 130MHz
50 mA max. - 130MHz ~ ≤150MHz
3 mA max. - 125kHz ~ < 500kHz
6 mA max. - 500kHz ~ < 40MHz
15 mA max. - 40MHz ~ < 60MHz
25 mA max. - 60MHz ~ < 85MHz
35 mA max. - 85MHz ~ ≤ 133MHz
4 mA max. - 125kHz ~ < 40MHz
10 mA max. - 40MHz ~ < 50MHz
20 mA max. - 50MHz ~ < 85MHz
25 mA max. - 85MHz ~ ≤ 100MHz
Symmetry
(50% of ouput waveform or
1.4Vdc for TTL)
45/55% max. - 15kHz ~ < 15MHz
40/60% max. - 15 ~ ≤ 85MHz
(Tighter symmetry available)
45/55% max. - 15kHz ~ < 15MHz
40/60% max. - 15 ~ ≤ 150MHz
(Tighter symmetry available)
45/55% max. - 125kHz ~ < 15MHz
40/60% max. - 15 ~ ≤ 133MHz
(Tighter symmetry available)
45/55% max. - 125kHz~ < 15MHz
40/60% max. - 15 ~ ≤ 100MHz
(Tighter symmetry available)
Rise and Fall times
(with typical load)
6ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 10% to 90%)
7ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 10% to 90%)
5ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 0.8V to 2.0V)
6ns max. - 15kHz ~ < 40MHz
3ns max. - 40 ~ ≤ 150MHz
(between 10% to 90%)
5ns max. - 125kHz ~ < 40MHz
3ns max. - 40 ~ ≤ 133MHz
(between 10% to 90%)
5ns max. - 125kHz ~ < 40MHz
3ns max. - 40 ~ ≤ 100MHz
(between 10% to 90%)
Output Load
15pF // 10kohms
50pF max. or 10TTL
for (Fo < 60MHz)
30pF max. or 6TTL
for (Fo ≥ 60MHz)
15pF // 10kohms
(2LSTTL)
10TTL (Fo < 60MHz)
6TTL (Fo ≥ 60MHz)
15pF // 10kohms
(30pF max. for F ≤ 50MHz)
15pF // 10kohms
Start-up time (Tstup) 5ms max.
Output voltage (Voh/Vol) 0.9 x Vdd min.; 0.1 x Vdd max. 2.4V min.; 0.4V max. 0.9 x Vdd min.; 0.1 x Vdd max.
Output Current (Ioh/Iol) ± 24mA max. ± 8mA max. -1.6 mA/TTL
+40 µA/TTL
± 4mA max.
Enable/Disable
Tristate function Pin 1
VIH ≥ 2.2V Oscillation;
VIL ≤ 0.8V High Impedance
VIH ≥ 0.7 x Vdd Oscillation;
VIL ≤ 0.3 x Vdd High Impedance
Jitter RMS 1σ (at 25ºC) 8ps typ. - < 40MHz
5ps typ. - ≥ 40MHz
15ps typ. - < 40MHz
8ps typ. - ≥ 40MHz
Aging (at 70ºC) ± 5ppm max. first year / ± 2ppm max. per year thereafter
(*) Frequency as low as 1kHz without tristate function available. Contact Q-Tech for details.
Q-TECH
CORPORATION
Output frequency
Frequency vs. Temperature Code:
1 = ± 100ppm at 0ºC to +70ºC
4 = ± 50ppm at 0ºC to +70ºC
5 = ± 25ppm at -20ºC to +70ºC
6 = ± 50ppm at -55ºC to +105ºC
9 = ± 50ppm at -55ºC to +125ºC
10 = ± 100ppm at -55ºC to +125ºC
11 = ± 50ppm at -40ºC to +85ºC
12 = ± 100ppm at -40ºC to +85ºC
14 = ± 20ppm at -20ºC to +70ºC
15 = ± 25ppm at -40ºC to +85ºC
T = Standard
S = Solder Dip (*) Output frequency
Frequency vs. Temperature Code:
1 = ± 100ppm at 0ºC to +70ºC
4 = ± 50ppm at 0ºC to +70ºC
5 = ± 25ppm at -20ºC to +70ºC
6 = ± 50ppm at -55ºC to +105ºC
9 = ± 50ppm at -55ºC to +125ºC
10 = ± 100ppm at -55ºC to +125ºC
11 = ± 50ppm at -40ºC to +85ºC
12 = ± 100ppm at -40ºC to +85ºC
14 = ± 20ppm at -20ºC to +70ºC
15 = ± 25ppm at -40ºC to +85ºC
Screening Options:
Blank=No Screening
M=Per MIL-PRF-55310, Level B
Tristate Option
Blank = No Tristate
D = Tristate
T = Standard
S = Solder Dip (*) Output frequency
Frequency vs. Temperature Code:
1 = ± 100ppm at 0ºC to +70ºC
4 = ± 50ppm at 0ºC to +70ºC
5 = ± 25ppm at -20ºC to +70ºC
6 = ± 50ppm at -55ºC to +105ºC
9 = ± 50ppm at -55ºC to +125ºC
10 = ± 100ppm at -55ºC to +125ºC
11 = ± 50ppm at -40ºC to +85ºC
12 = ± 100ppm at -40ºC to +85ºC
14 = ± 20ppm at -20ºC to +70ºC
15 = ± 25ppm at -40ºC to +85ºC
Screening Options:
Blank=No Screening
M=Per MIL-PRF-55310, Level B
Tristate Option
Blank = No Tristate
D = Tristate
T = Standard
S = Solder Dip (*) Output frequency
Frequency vs. Temperature Code:
1 = ± 100ppm at 0ºC to +70ºC
4 = ± 50ppm at 0ºC to +70ºC
5 = ± 25ppm at -20ºC to +70ºC
6 = ± 50ppm at -55ºC to +105ºC
9 = ± 50ppm at -55ºC to +125ºC
10 = ± 100ppm at -55ºC to +125ºC
11 = ± 50ppm at -40ºC to +85ºC
12 = ± 100ppm at -40ºC to +85ºC
14 = ± 20ppm at -20ºC to +70ºC
15 = ± 25ppm at -40ºC to +85ºC
Screening Options:
Blank=No Screening
M=Per MIL-PRF-55310, Level B
Tristate Option
Blank = No Tristate
D = Tristate
3
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT78 SERIES
HIGH RELIABILITY MINIATURE CRYSTAL CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Q-TECH
CORPORATION
QT78 (Revision H, January 2011) (ECO #10085)
Packaging Options Other Options Available For An Additional Charge
Ordering Information
Frequency stability vs. temperature codes may not be available in all frequencies.
For Non-Standard requirements, contact Q-Tech Corporation at Sales@Q-Tech.com
Specifications subject to change without prior notice.
• Standard packaging in anti-static plastic tube (60pcs/tube)
• Tape and Reel (1,000pcs/reel) is available for an additional
charge.
•(*) Hot Solder Dip Sn60 per MIL-PRF 55310
• P. I. N. D. test (MIL-STD 883, Method 2020)
5.0Vdc 3.3Vdc
2.5Vdc 1.8Vdc
QT78HCD9M-85.000MHz
QT78 HC D9M-85.000MHz
Sample part number
QT78LD6M-150.000MHz
QT78 LD6M-150.000MHz
Sample part number
QT78ND12M-133.000MHz
QT78 ND12 M-133.000MHz
Sample part number
QT78RD1M-100.000MHz
QT78 RD1 M-100.000MHz
Sample part number
T = Standard
S = Solder Dip (*)
Screening Options:
Blank=No Screening
M=Per MIL-PRF-55310, Level B
Tristate Option
Blank = No Tristate
D = Tristate
Logic:
AC = ACMOS
HC = HCMOS
T = TTL
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Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT78 SERIES
HIGH RELIABILITY MINIATURE CRYSTAL CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Q-TECH
CORPORATION
QT78 (Revision H, January 2011) (ECO #10085)
Reflow Profile Embossed Tape and Reel Information For QT78
Environmental Specifications
The five transition periods for the typical reflow process are:
• Preheat
• Flux activation
• Thermal equalization
• Reflow
• Cool down
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 Time (s)
25
50
75
100
125
150
175
200
225
250
TEMP(*C)
0
60s min.
120s max.
60s min.
120s max.
225º min.
240º max.
60s min.
150s max.
240º
Ramp down (6ºC/s Max)
Ramp up (3ºC/s Max)
TYPICAL REFLOW PROFILE FOR Sn-Pb ASSEMBLY
Dimensions are in mm. Tape is compliant to EIA-481-A.
Reel size vs. quantity:
FEEDING (PULL) DIRECTION
ø13.0±0.5
2.5
4.80±0.1
5º MAX
ø1.5
2.0
1.75±0.1
0.3±.005 ø1.5
2.0±0.1
5.5±0.1
10.01±0.1
4.0±0.1
ø178±1
or
ø330±1
26
24.0±0.3
16±0.1
14.53
±0.1
120º
Reel size (Diameter in mm)
Qty per reel (pcs)
178
250
330
1,000
Q-Tech Standard Screening/QCI (MIL-PRF55310) is available for all of our QT78 Products. Q-Tech can also customize screening
and test procedures to meet your specific requirements. The QT78 product is designed and processed to exceed the following test
conditions:
Environmental Test Test Conditions
Temperature cycling MIL-STD-883, Method 1010, Cond. B
Constant acceleration MIL-STD-883, Method 2001, Cond. A, Y1
Seal: Fine and Gross Leak MIL-STD-883, Method 1014, Cond. A and C
Burn-in 160 hours, 125°C with load
Aging 30 days, 70°C, ±1.5ppm max
Vibration sinusoidal MIL-STD-202, Method 204, Cond. D
Shock, non operating MIL-STD-202, Method 213, Cond. I (See Note 1)
Thermal shock, non operating MIL-STD-202, Method 107, Cond. B
Ambient pressure, non operating MIL-STD-202, 105, Cond. C, 5 minutes dwell time minimum
Resistance to solder heat MIL-STD-202, Method 210, Cond. B
Moisture resistance MIL-STD-202, Method 106
Terminal strength MIL-STD-202, Method 211, Cond. C
Resistance to solvents MIL-STD-202, Method 215
Solderability MIL-STD-202, Method 208
ESD Classification MIL-STD-883, Method 3015, Class 1 HBM 0 to 1,999V
Moisture Sensitivity Level J-STD-020, MSL=1
Note 1: Additional shock results successfully passed on 16MHz, 40MHz, and 80MHz
• Shock 850g peak, half-sine, 1 ms duration (MIL-STD-202, Method 213, Cond. D modified)
• Shock 1,500g peak, half-sine, 0.5ms duration (MIL-STD-883, Method 2002, Cond. B)
Please contact Q-Tech for higher shock requirements
5
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT78 SERIES
HIGH RELIABILITY MINIATURE CRYSTAL CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Q-TECH
CORPORATION
QT78 (Revision H, January 2011) (ECO #10085)
Vdd
GND
0.1xVdd
0.9xVdd
VOH
VOL
Tr Tf
TH
T
0.5xVdd
SYMMETRY = x 100%
TH
T
Output Waveform (Typical)
Frequency vs. Temperature Curve
Test Circuit
-
-
Output
Ground
43
2
0.1µF
15pF
1
Tristate Function
Power
supply 10k
mA
Vdc
+
+
+
(*)
or
0.01µF
QT78
(*) CL includes probe and jig capacitance
Typical test circuit for CMOS logic
45º 45º
Hybrid Case
Substrate
Die
D/A epoxy
D/A epoxy
Heat
Die
R1
D/A epoxy Substrate D/A epoxy Hybrid Case
R2 R3 R4 R5
Thermal Characteristics
JA JC CA
Die
T
T
TC
A
J
CA
JC
(Figure 1)
(Figure 2)
The Tristate function on pin 1 has a built-in pull-up resistor typical 50kΩ, so it can
be left floating or tied to Vdd without deteriorating the electrical performance.
The heat transfer model in a hybrid package is described in
figure 1.
Heat spreading occurs when heat flows into a material layer of
increased cross-sectional area. It is adequate to assume that
spreading occurs at a 45° angle.
The total thermal resistance is calculated by summing the
thermal resistances of each material in the thermal path
between the device and hybrid case.
RT = R1 + R2 + R3 + R4 + R5
The total thermal resistance RT (see figure 2) between the heat
source (die) to the hybrid case is the Theta Junction to Case
(Theta JC) in°C/W.
• Theta junction to case (Theta JC) for this product is 30°C/W.
• Theta case to ambient (Theta CA) for this part is 100°C/W.
• Theta Junction to ambient (Theta JA) is 130°C/W.
Maximum power dissipation PD for this package at 25°C is:
• PD(max) = (TJ (max) – TA)/Theta JA
• With TJ = 175°C (Maximum junction temperature of die)
• PD(max) = (175 – 25)/130 = 1.15W
6
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT78 SERIES
HIGH RELIABILITY MINIATURE CRYSTAL CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Q-TECH
CORPORATION
QT78 (Revision H, January 2011) (ECO #10085)
Phase noise is measured in the frequency domain, and is expressed as a ratio of signal power to noise power measured in a 1Hz
bandwidth at an offset frequency from the carrier, e.g. 10Hz, 100Hz, 1kHz, 10kHz, 100kHz, etc. Phase noise measurement is made
with an Agilent E5052A Signal Source Analyzer (SSA) with built-in outstanding low-noise DC power supply source. The DC source
is floated from the ground and isolated from external noise to ensure accuracy and repeatability.
In order to determine the total noise power over a certain frequency range (bandwidth), the time domain must be analyzed in the
frequency domain, and then reconstructed in the time domain into an rms value with the unwanted frequencies excluded. This may be
done by converting L(f) back to Sφ(f) over the bandwidth of interest, integrating and performing some calculations.
The value of RMS jitter over the bandwidth of interest, e.g. 10kHz to 20MHz, 10Hz to 20MHz, represents 1 standard deviation of
phase jitter contributed by the noise in that defined bandwidth.
Figure below shows a typical Phase Noise/Phase jitter of a QT78AC6, 5.0Vdc, 80MHz clock at offset frequencies 10Hz to 5MHz, and
phase jitter integrated over the bandwidth of 12kHz to 1MHz.
Phase Noise and Phase Jitter Integration
Period Jitter
As data rates increase, effects of jitter become critical with
its budgets tighter. Jitter is the deviation of a timing event of
a signal from its ideal position. Jitter is complex and is
composed of both random and deterministic jitter
components. Random jitter (RJ) is theoretically unbounded
and Gaussian in distribution. Deterministic jitter (DJ) is
bounded and does not follow any predictable distribution.
DJ is also referred to as systematic jitter. A technique to
measure period jitter (RMS) one standard deviation (1σ) and
peak-to-peak jitter in time domain is to use a high sampling
rate (>8G samples/s) digitizing oscilloscope. Figure shows
an example of peak-to-peak jitter and RMS jitter (1σ) of a
QT78AC-24MHz, at 5.0Vdc.
RMS jitter (1σ): 5.37ps Peak-to-peak jitter: 43ps
Symbol
Definition
∫L(f) Integrated single side band phase noise (dBc)
Sφ (f)=(180/Π)x√2 ∫L(f)df Spectral density of phase modulation, also known as RMS phase error (in degrees)
RMS jitter = Sφ (f)/(fosc.360°) Jitter(in seconds) due to phase noise. Note Sφ (f) in degrees.