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參數(shù)資料
| 型號(hào)： | QT821TN-2.000000-R |
| 廠商： | Q-TECH CORP |
| 元件分類(lèi)： | TCXO, clock |
| 英文描述： | TCXO, CLOCK, 2 MHz, HCMOS OUTPUT |
| 封裝： | SMD, 24 PIN |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 538K |
| 代理商： | QT821TN-2.000000-R |
QT821 and QT822 Square-Wave
REV.
Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
SIZE
A
CAGE NO.
51774
Sheet 3 of 8
A
3.1.1 Electrical Characteristics
PARAMETER
SYMBOL
CONDITIONS
VALUE
UNIT
Frequency Nom.
fo
-
2. 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.
temperature
(including ±5% Load
Change and ±5% Input
Voltage change)
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
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 variance)
0.001
ppm
RF Output
Contact factory for other options
available
30 to 70
3rd
70.1 to
90
3rd X
MHz
Output
VOH /
VOL
load=15pF, Vcc=nom.
0.9Vcc / 0.1Vcc
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=10Hz
Δf=100Hz
Δf=1kHz
Δf=10kHz
Δf=100kHz
-75
-105
-130
-140
Contact
factory
for other
options
available
dBc/Hz
A:
Supply Current, rise & fall time are frequency dependent
3.2
Absolute Maximum Rating
Supply Voltage
0 to +6.0 VDC
DC Input Current
50 mA maximum
Storage Temperature range
-62°C to +125°C
Lead Temperature (Soldering, 10 seconds)
300°C
3.2.1 Physical Characteristics
3.2.1.1 Dimensions - The TCXO outline dimensions and terminal connections shall be as shown in Figure 1
herein.
3.2.1.2 Weight - The TCXO shall weigh less than or equal to 15 grams.
3.2.1.3 Materials - The TCXO package body and lead finish shall be gold in accordance with MIL-PRF-38534.
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