RFX144V24-S23 and RFX96V24-S23 Modem Designer’s Guide
1070
14-5
Table 14-1. Typical Modem Interface Parts List
Component Designation
Component Type
Description/Part Number
Notes
Basic Interface
See Figure 14-1.
C1, C2, C4, C5, C7, C12, C14, C16
Capacitor
0.1 µF ±10%, 50V
C6, C11. C15, C17
Capacitor
10 µF ±20%, 25V
C3, C13
Capacitor
100 µF ±20%, 25V
R1, R5
Resistor
15
Ω
±1%, 1/8W
R2
Resistor
100
Ω
±5%, 1/8W
R4
Resistor
4.7K
Ω
±5%, 1/8W
R3
Resistor
10K
Ω
±5%, 1/8W
U1
Modem
RFX144V24-S23 / RFX96V24-
S23 (Rockwell)
U2
IA
10485 (Rockwell)
Third Overtone Crystal Circuit
See Figure 14-1.
C8
Capacitor
18 pF ±5%, 50V
See Note 1.
C9, C10
Capacitor
10 pF ±5%, 50V
See Note 1.
L1
Inductor
4.7 µH ±10%
Y1
Crystal
49.92 MHz / 53.76 MHz
See Table 14-2.
Typical Microphone Circuit
See Figure 14-4
C3
Capacitor
33 pF ±5%, 50V
C2, C4, C6
Capacitor
0.1 µF ±10%, 50V
C1
Capacitor
10 µF ±20%, 25V
C5
Capacitor
20 µF ±20%, 25V
R3
Resistor
100
Ω
±5%, 1/8W
R4
Resistor
1K
Ω
± 5%, 1/8W
R2
Resistor
1.5K
Ω
± 5%, 1/8W
R1
Resistor
10K
Ω
±5%, 1/8W
R5
Resistor
47K
Ω
±5%, 1/8W
D1, D2
Diode
BAS19
U1
Amplifier
NE5534
X1
Microphone
Typical Line Interface Circuit
See Figure 14-2
C2
Capacitor
1000 pF ±5%, 25V
C1
Capacitor
0.1 µF ±10%, 50V
C4
Capacitor
6.8 µF ±20%, 35V
C3
Capacitor
10 µF ±20%, 25V
D1, D2, D3
Zener Diode
NLL5243B
D4, D5, D6, D7
Diode
1N4003
D8
Diode
1N4148
Q1
Transistor
2N2222
Q2
Transistor
2N2102
R6, R7
Resistor
18
Ω
±1%, 1/4W
R1, R2
Resistor
Application dependent
R3
Resistor
10
Ω
±1%, 1/8W
R8
Resistor
10K
Ω
±5%, 1/8W
R5
Resistor
18.7K
Ω
±1%, 1/8W
R4
Resistor
40.2K
Ω
±1%, 1/8W
T1
Transformer
VR1
Varactor
V150LA10A
Содержание RFX144V24-S23
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