FX809 Ver la hoja de datos (PDF) - CML Microsystems Plc
Número de pieza
componentes Descripción
Fabricante
FX809 Datasheet PDF : 14 Pages
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External Components
VDD
C5
R4
SIGNAL IN
R2
C7
SIGNAL OUT
SEE INSET
XTAL
1
XTAL/CLOCK 2
IRQ
3
4
5
Rx FREEFORMAT 6
C6
VBIAS
7
R3
8
FX809J
9
Rx IN
10
C4
11
VSS
12
VDD
24
WAKE
23
ADDRESS SELECT
22
SERIAL CLOCK
21
COMMAND DATA
20
CS
19
18
REPLY DATA
17
16
15
14
13
Tx OUT
C3
VSS
INSET
C2
Fig.2 External Components
XTAL
Component Value
1
R=
1
1.0MΩ Note 1:
R
2
X1
R1
FX809J
R
3
R
4
C
2
XTAL/CLOCK
1
C
2
C1
V
SS
C3
C
4
Note 1
100kΩ
22.0kΩ
33.0pF
33.0pF
1.0µF
0.1µF
R2, R3 and C7 form the gain
components for the signal;
R3 should be chosen as
required by the signal input
level.
C5
1.0µF
C
33.0pF
6
C
Note 1
7
X
4.032MHz
1
Tolerance: R = ±10% C = ±20%
Modem Performance
2 x 10-2
10 -2
Bit Error Rate
(Logarithmic Scale)
Ideal Coherent FFSK
Characteristic
FX809
Characteristic
10 -3
10 -4
8
6
4
3
2
10 -5
(Linear Scale )
0
12
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Signal to Noise Ratio (dB) [Bit-Rate Bandwidth]
Fig.3 Bit Error Rate vs Signal-to-Noise Ratio
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