Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
SIZE
A
CAGE NO.
51774
QT814, QT815 and QT816
Sine-Wave 24 Flat Pack
REV.
E
Page 3 of 10
3.1.1 Electrical Characteristics
PARAMETER SYMBOL CONDITIONS VALUE UNIT
Frequency Nom.
fo
-
See part number
generation table
MHz
Supply voltage, Nom.
Vs
Vs±5%
See part number
generation table
V
Input Current, max.
Is
Vs, nom. / Ta=+25C
30 for Vs=
12 and 15V
55 for Vs= 5
and 3.3V
mA
Freq. stability vs.
Operating Temperature
f/fc (Ta)
Contact factory for other
options available
See part number
generation table
ppm
Electrical Frequency
Adjustment Min.
(when specified)
f/fo
(Vcc)
±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
See part number
generation table
ppm
Freq. stability vs. ±5 %
Input Voltage Variation,
Max
f/fc (Vs) ±5 % Vs,, Ta=+25C
±1.2 for
Vss= 5 and
3.3V
±0.3 for
Vss= 12
ppm
Freq. stability vs. ±5 %
Load Variation, Max
f/fc
(Load)
Vs, nom. / Ta=+25C ±0.3
Aging Max
f/fo
over 10 year (first year ≤ 1
ppm)
±5.0
ppm
Freq. stability vs. Vacuum
f/fo
Met by design, not tested
0.2
ppm
Short term stability
f/fc(t) t=1sec. (Allan Deviation) 0.001
ppm
RF Output
Contact factory for other
options available
30 to 75
3rd
75.1 to 350
3
rd
X
MHz
Output level Min.
Sine Class S, 100 krads (Si)
total dose Min
See part number
generation table
dBm
Harmonics Max. -20 -20 dBc
Sub-harmonics Max. N/A -20 dBc
Phase noise @ freq. offset
(Output Frequency up
to 75 MHz)
See notes: A,B,C and D
below
£ (f)
£ (f)
£ (f)
£ (f)
£ (f)
f=10Hz
f=100Hz
f=1kHz
f=10kHz
f=100kHz
-80
-110
-135
-155
-155
dBc/H
z
dBc/H
z
dBc/H
z
dBc/H
z
dBc/H
z
Spurious
Under static conditions. Met by
design, not tested.
-70 -70 dBc
A:
For Frequencies between 75.1 MHz and 150 MHz phase noise degrades between 6 dbc/Hz to 10 dbc/Hz
B:
For Frequencies between 150.1 MHz and 210 MHz phase noise degrades between 10 dbc/Hz to 12
dbc/Hz
C:
For Frequencies between 210.5 MHz and 225 MHz phase noise degrades 13 dbc/Hz
D:
For Frequencies between 225.5 MHz and 300 MHz phase noise degrades 15 dbc/Hz
3.2 Absolute Maximum Rating
Supply Voltage 0 to +16.5 VDC
Note 1
DC Input Current 55 mA maximum
Note 1
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