FX909AD2 データシートの表示（PDF） - CML Microsystems Plc
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FX909AD2 Datasheet PDF : 47 Pages
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Wireless Modem Data Pump
1.4 External Components
FX909A
Figure 2 Recommended External Components
R1
See section 1.5.1.10
R2
100k ohm
R3
1M ohm *
R4
See section 1.5.1.12
C1
0.1 µF
C2
0.1 µF
C3
See section 1.5.4.3 *
C4
See section 1.5.4.3 *
* Refer also to 1.5.1.14
Tolerances: R4 ±5%
R2, C5 ±10%
all other components ±20%
C5
See section 1.5.1.12
C6
See note below
C7
See note below
X1
See section 1.5.4.3 *
C6 and C7 values should satisfy the following: C (in Farads) x data rate (bits/second) = 120 x 10-6
e.g.
Data Rate (kbits/sec)
4.0
4.8
8.0
9.6
16.0
19.2
C6/C7 (nF)
30
22
15
12
6.8
6.8
© 1996 Consumer Microcircuits Limited
6
D/909A/4
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