Standard Frequencies: 10, 12.8, 16.384, 19.44, 20, 20.48 MHz
•
•
•
•
Applications
PCS Base Stations
Land Mobile Radio
Cellular Telephoney
Radio in the Local Loop
Previous Vectron Model Numbers - C2260
Performance Specifications
Frequency Stabilities
1
Parameter
vs. operating temperature range
(referenced to +25°C)
Min
-1.5
-1.0
-2.5
-1.0
-1.0
-0.5
-2.5
-0.5
-0.2
-1.0
-0.80
-0.28
-0.28
-0.80
-0.28
-0.28
-1.0
-0.2
-0.1
-2.5
-4.6
Typical
Max
+1.5
+1.0
+2.5
+1.0
+1.0
+0.5
+2.5
+0.5
+0.2
+1.0
+0.80
+0.28
+0.28
+0.80
+0.28
+0.28
+1.0
+0.2
+0.1
+2.5
+4.6
Units
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
Condition
-40 to +85°C
-40 to +85°C
-20 to +70°C
-20 to +70°C
0 to +50°C
0 to +50°C
at time of shipment, nominal EFC
V
S
±5%
Load ±10%
after 30 days of operation
-20 to +70°C
0 to +50°C
-20 to +70°C
-40 to +85°C
-30 to +85°C
-40 to +85°C
Options
5
Options
5
Initial tolerance
vs. supply voltage change
vs. load change
vs. aging / 1 Year
vs. operating temperature range
(referenced to +25°C)
Frequency Stabilities
1
(Stratum 3 TCXO) <32MHz
Initial tolerance
vs. supply voltage change
vs. load change
vs. aging / 20 Years
Overall tolerance
at time of shipment, nominal EFC
V
S
±5% static
Load ±5% static
Note:*Stratum 3 per GR-1244-CORE:
<±4.6ppm for all causes and 20 years aging,
holdover: <±0.37ppm over 24 hours
Performance Specifications
Frequency Stabilities
1
Parameter
vs. operating temperature range
(referenced to +25°C)
For 10, 12.8, 16.384, 20.26 MHz
Initial tolerance
vs. supply voltage change
vs. load change
vs. aging / 20 Years
Overall tolerance
Min
-0.15
Typical
Max
+0.15
Units
ppm
Condition
Options
5
@ 10MHz
Option
5
with Vs=3.3V
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
0 to +50°C
-1.0
-0.2
-0.1
-2.5
-4.6
+1.0
+0.2
+0.1
+2.5
+4.6
ppm
ppm
ppm
ppm
ppm
at time of shipment, nominal EFC
V
S
±5%
Load ±10%
Note:*Stratum 3 per GR-1244-CORE:
<±4.6ppm for all causes and 20 years aging,
holdover: <±0.37ppm over 24 hours
Supply Voltage (Vs)
Parameter
Supply voltage (standard)
Current consumption
Load R
|| C
Output Power
Load
Signal Level (Vol)
Signal Level (Voh)
Rise and Fall time
Duty Cycle
Tuning Range
Tuning Range for Stability: 807,
287, 157 / Stratum 3 Version
Tuning Range
Linearity
Tuning Slope
Control Voltage Range
Freq. control input impedance
0.3
10
True table
Pin 2
High
Open
Low
1.65
±5.0
±8.0
40
50
3.0
5
60
9
9
0.7
10
10
Min
3.135
Typical
3.3
Max
3.465
6
11
11
Units
VDC
mA
kΩ
pF
V
PP
Condition
steady state @ +25°C
RF Output (Clipped Sinewave)
@ 10kΩ || 10pF
RF Output (HCMOS)
13.5
15
16.5
0.3
pF
VDC
VDC
ns
%
@ (Voh-Vol)/2
with Vs=3.3V and 15pF Load
with Vs=3.3V and 15pF Load
Frequency Tuning (EFC)
Fixed TCXO; No adjust
±14.0
±14.0
10%
Positive
3.0
VDC
kΩ
±20.0
±20.0
ppm
ppm
Enable (instead of EFC)
RF_out
Pin 3
Data
Data
High Tristate
Additional Parameters
-65
-95
-120
-140
-145
8.0 g
Handling & Processing Note
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Phase Noise
3
Weight
Processing & Packing
Supply voltage (Vs)
Control Voltage
Operable Temperature Range
Storage Temperature Range
0
-40
-55
Absolute Maximum Ratings
6.0
Vs
+85
+125
V
V
°C
°C
Cross Reference List
Vectron Part Frequency Temp Range
(MHz)
(°C)
C2260A1-0028
C2260A1-0032
C2260A1-0029
C2260A1-0021
C2260A1-0009
C2260A1-0015
12.8
12.8
12.8
20
20
20
-20 to +70
-40 to +85
-40 to +85
-20 to +70
-20 to +80
-40 to +85
±0.28
±0.28
±4.6
Temp Stability
(ppm)
±0.28
±0.28
Holdover Stability
(ppm)
±0.37
±0.37
±4.60
Overal Stability
(ppm)
±4.6
±4.6
±20
±4.6
±4.6
±20
Supply
(V)
3.3
3.3
3.3
3.3
3.3
3.3
Semtech
Semtech
Semtech
Semtech
Semtech
Semtech
Standard Shipping Method
A
X
B
K
P
Enclosure Type
G204/G211
*bei W
≤ 24
mm
nur untere Lochreihe
∗by
W
≤
24 mm only lower hole line
Lage im Gurt
Position in tape
Pin 1
Abwickelrichtung
Unwinding direction
Gurtunterseite
Tape buttom side
Gurtoberseite
Tape upper side
Tape Width W (mm)
12
Quantity per meter
150.
Quantity per reel
750.
Dimension P
8
Standard Shipping Method
Package Codes: 700
Type
G204
Height “H”
2.5
Pin Length “L”
NA
Type
G204
Package Codes: 701
Height “H”
2.5
Pin Connections
1
2
3
4
Voltage Control (Vc) / Enable / N.C
Ground (Case)
RF Output
Supply Voltage Input (Vs)
Marking
TX-700
Frequency
AYYWW
Standard Shipping Method
Phase Noise
C2260 @ 12.8 MHz
MTIE according-1244-CORE:
C2260 @ 12.8 MHz
Recommended Reflow Profile
Profile Feature
Average ramp-up rate (T
L
to T
P
)
Preheat
-Temperature Min T
Smin
-Temperature Min T
Smax
-Time (min to max) t
S
Pb-Free Assembly/
Sn-Pb Assembly
3°C/second max.
150°C
200°C
60-180 seconds
3°C/second max
217°C
60-150 seconds
max 260°C
Profile Feature
Time 25°C to Peak Temperature
Time maintained above
-Temperature (T
L
)
-Time (t
L
)
Pb-Free Assembly/
Sn-Pb Assembly
8 minutes max.
217°C
60-150 seconds
TSmax to TL -Ramp-up Rate
Time maintained above
-Temperature (T
L
)
-Time (t
L
)
Peak Temperature (T
P
)
Time within 5°C of actual Peak
Temperature (t
P
)
Ramp-down Rate
20-40 seconds
6°C/ second max
Note:
All temperatures refer to topside of the package, measured on the package body surface.
Ordering Information
TX-70X 0 - E A J - 256 0 - 10M0000000
Model Code
700: Enclosure G204
701: Enclosure G211
Frequency
Frequency Control
0: No Tuning
1: ±5.0 to ±20ppm
2: ±8.0 to ±20ppm
3: Enable
Stability Code
256: ±2.5ppm
156: ±1.5ppm
106: ±1.0ppm
807: ±0.8ppm
507: ±0.5ppm
287: ±0.28ppm
157: ±0.15ppm
Height
0: 2.5mm
Supply Voltage
E: 3.3V
RF Output Code
A: HCMOS
F: Clipped Sinewave
Temperature Range
E: -40°C to +85°C
H: -30°C to +85°C
J: -20°C to +70°C
P: 0°C to +50°C
Notes:
1. Contact factory for improved stabilities or additional product options. Not all options and codes are available at all
frequencies.
2. Unless other stated all values are valid after warm-up time and refer to typical conditions for supply voltage, frequency
control voltage, load, temperature (25°C).
3. Phase noise degrades with increasing output frequency.
4. Subject to technical modification.
5. Contact factory for availability.
For Additional Information, Please Contact
USA:
Vectron International
267 Lowell Road
Hudson, NH 03051
Tel: 1.888.328.7661
Fax: 1.888.329.8328
Europe:
Vectron International
Landstrasse, D-74924
Neckarbischofsheim, Germany
Tel: +49 (0) 7268.801.100
Fax: +49 (0) 7268.801.281
Asia:
Vectron International
1F-2F, No 8 Workshop, No 308 Fenju Road
WaiGaoQiao Free Trade Zone
Pudong, Shanghai, China 200131
Tel: 86.21.5048.0777
Fax: 86.21.5048.1881
Disclaimer
Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application.
No rights under any patent accompany the sale of any such product(s) or information.
中位值滤波法就是通过连续采样奇数个数据，然后对数据从小到大排序，取中间的值做为本次采样值。 下面看C代码的实现 #define M 11 unsigned int filter2( void ) { unsigned int value_buf ; unsigned int count, i, j, temp; for( count = 0; count M; coun...[详细]
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