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AS3900 Datasheet(PDF) 13 Page - ams AG

Part # AS3900
Description  27MHz Low Power Star Network Transceiver
PDF  59 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3900 Datasheet(HTML) 13 Page - ams AG

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www.austriamicrosystems.com/RF-Transceivers/AS3900
Revision 1.00c
13 - 59
AS3900
Data Sheet - Ty pical Operating Characteristi c s
7 Typical Operating Characteristics
Figure 3. Blocking of Interferer vs Frequency
(DR=106kbps, f_dev=106kHz)
Figure 4. Blocking of Interferer vs Frequency
(DR=53kbps, f_dev=106kHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
-1000
-750
-500
-250
0
250
500
750
1000
f(kHz) =f
carrier(kHz) - finterferer(kHz)
UnmodulatedInterferer
ModulatedInterferer
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
-1000
-750
-500
-250
0
250
500
750
1000
f(kHz) = f
carrier(kHz) - finterferer(kHz)
Unmodulat ed Int erf erer
Modulat ed Int erf erer
Figure 5. Supply Current vs. Impedance of Antenna+Matching
Network (PA=differential, Rout=12.5Ohm, cont. Tx)
Figure 6. Output Power vs. Impedance of Antenna+Matching
Network (PA=differential, Rout=12.5Ohm, cont. Tx)
5
10
15
20
25
30
35
0
200
400
600
800
1000
R Antenna + Matching Network (Ohm)
VDD=2.7V
V DD=3.0V
VDD=3.1V
V DD=3.6V
5,0
7,0
9,0
11,0
13,0
15,0
17,0
0
200
400
600
800
1000
R Antenna + Matching Network (Ohm)
VDD=2.7V
V DD=3.0V
VDD=3.1V
V DD=3.6V
Figure 7. Output Power vs. Supply Voltage
(PA=differential,
R Ant+Matching=422Ohm, cont. Tx)
Figure 8. Output Power vs. Supply Voltage
(PA=single ended,
R Ant+Matching=422Ohm, cont. Tx)
0
2
4
6
8
10
12
14
2,0
2,2
2,4
2,6
2,8
3,0
3,2
3,4
3,6
Supply Voltage (V)
Rout=12.5Ohm
Rout=25Ohm
0
2
4
6
8
10
12
14
2,02,2
2,42,6
2,83,0
3,23,4
3,6
Supply Voltage (V)
Rout=12.5Ohm
Rout=25Ohm



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