Q-Tech QT812 Square Wave User Manual
Page 3
Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
SIZE
A
CAGE NO.
51774
QT811 and QT812 Square-Wave
24 pin DDIP
REV.
Sheet 3 of 10
D
3.1.1 Electrical
Characteristics
PARAMETER
SYMBOL
CONDITIONS
VALUE
UNIT
Frequency Nom.
fo
-
3. to 90
MHz
Supply voltage, Nom.
Vs
Vs±5%
See part number
generation table
V
Input Current, max.
Is
Vs, nom. / Ta=+25
°C
50 mA
Freq. stability vs. Operating
temperature
Δf/fc (Ta)
Contact factory for other options
available
See part number
generation table
ppm
Electrical Frequency
Adjustment Min.
(when specified)
Δf/fo
(
ΔVcc)
±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 ppm
Freq. stability vs. ±5 %
Input Voltage Variation
Δf/fc (Vs) Ta=+25°C
±1.2 ppm
Freq. stability vs. ±5 %
Load Variation
Δf/fc
(Load)
Vs, nom. / Ta=+25
°C 0.3
ppm
Aging Max
Δf/fo
over 10 year (first year ≤ 1 ppm)
±5.0
ppm
Freq. stability vs. Vacuum
Δf/fo
Met by design, not tested
±0.2
ppm
Short term stability
Δf/fc(Δt) Δt=1sec. (Allan Deviation)
0.001 ppm
RF Output
Contact factory for other options
available
30 to 70
3rd
70.1 to
90
3
rd
X
MHz
Output
VOH / VOL load=15pF, Vcc=nom.
0.9
•Vcc / 0.1•Vcc
V
Duty cycle
DC
load=15pF/ @50%Vcc, Ta=+25
°C
See part number
generation table
%
Rise- / fall time
tr / tf
20%~80% Vout, 80%~20% Vout
.5…7 (see note A)
nSec
Load
15
pF
Phase noise @ freq. offset
£ (
Δf)
£ (
Δf)
£ (
Δf)
£ (
Δf)
£ (
Δf)
Δf=10Hz
Δf=100Hz
Δf=1kHz
Δf=10kHz
Δf=100kHz
-70
-100
-130
-140
-140
70.1 to 90
MHZ
Contact
factory for
other
options
available
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
A:
Supply Current, rise & fall time are frequency dependent
3.2 Absolute Maximum Rating
Notes: 1 – Without irreversible damages
CHARACTERISTICS
MAXIMUM RATINGS
REMARKS
Supply Voltage
0 to +6.0 VDC
Note 1
DC Input Current
50 mA maximum
Note 1
Storage Temperature range
-55°C to +125°C
Note 1
Lead Temperature (Soldering, 10 seconds)
300°C
Note 1
ITAR-CONTROLLED Q-TECH PROPRIETARY DO NOT COPY OR DISTRIBUTE WITHOUT Q-TECH APPROVAL
24 PIN Flat-Pack