(No.RA054<Rev.001>)1-23
2.5
COMPONENTS DESCRIPTION
2.5.1 TX-RX unit (XC1-182K-00,XC1-183K-XX)
Ref. No.
Part Name
Use / Function
IC1
IC
Voltage regulator (90C)
IC12
IC
DC/DC converter (18M)
IC13
IC
Voltage regulator (31BU)
IC14
IC
DC/DC converter (200C)
IC15
IC
Voltage regulator (12BU)
IC16
IC
Voltage regulator (50CT)
IC17
IC
Voltage regulator (32A)
IC18
IC
Ignition
IC19
IC
Voltage regulator (32C)
IC20
IC
Voltage regulator (32M)
IC21
IC
Load Switch (18M_3 )
IC22
IC
Power management
IC23
IC
Voltage regulator (50C)
IC24
IC
DC/DC converter (12M)
IC25
IC
DC/DC converter (54M)
IC26
IC
Voltage regulator (50A)
IC101
IC
DC amplifier (CV/Assist)
IC202
IC
MMIC (Pre-drive)
IC203
IC
DC amplifier (APC)
IC205
IC
RF power control
IC301
IC
Attenuation
IC302
IC
Transceiver IC
IC401
IC
Flash memory
IC402
IC
SDRAM
IC403
IC
Logic control
IC404
IC
MPU/DSP
IC405,406
IC
Analog switch
IC407,408
IC
Logic control
IC409
IC
I/O expander
IC410
IC
A/D converter
IC411,412
IC
D/A converter
IC413
IC
Ignition
IC414
IC
DC amplifier (VREF/25VREF)
IC602,603
IC
Logic control
IC604
IC
I/O expander
IC605
IC
RS232C Driver
IC606
IC
Logic control
IC607
IC
Codec
IC608
IC
Audio amplifier
IC609
IC
Voltage regulator (50AC)
Q11
Transistor
DC switch (OVRB)
Q12
FET
DC switch (SB1)
Q13,14
Transistor
DC switch
Q15,16
Transistor
Voltage regulator (50BU)
Q17
FET
DC switch (SB2)
Q18
Transistor
DC switch
Q19
FET
DC switch
Q20
FET
DC switch (90T)
Q21
Transistor
DC switch
Q22
FET
DC switch (90ANT)
Q23
Transistor
DC switch
Q25
Transistor
DC switch (SBC)
Q101
Transistor
Tripler
Q102
Transistor
Tripler
Q103
FET
DC switch
Q104
Transistor
Ripple filter
Q105
FET
VCO oscillation
Q106,107
Transistor
VCO Buffer amplifier
Q201
FET
TX Drive amplifier
Q202
Transistor
DC switch
Q204-206
Transistor
DC switch
Q301
FET
DC switch
Q401
Transistor
TCXO Buffer amplifier
Q402-404
FET
DC switch
Q601
FET
Level conversion
Q602
Transistor
DC switch
Q603
FET
Horn alert switch
Q604
Transistor
Audio mute
Q605
FET
Audio mute
Q606
FET
DC switch
D1
Zener diode
Reverse protection
D13
Zener diode
Voltage regulator (50BU)
D14,15
Diode
Reverse current prevention
D16,17
Diode
DC/DC converter
D18,19
Diode
Reverse current prevention
D20
Zener diode
Over voltage protection
D21
Diode
Reverse current prevention
D22
Zener diode
Over voltage protection
D24
Diode
Backup battery charge
D26,27
Diode
Reverse current prevention
D101
Zener diode
Over voltage protection
D102
Variable
capacitance diode
VCO frequency control
D103-106
Variable
capacitance diode
VCO assist tune
D107
Zener diode
Speed up
D108
Variable
capacitance diode
TX modulation
D201
Zener diode
Over voltage protection
D202
Diode
RF switch
D204
Diode
TX Reverse power detection
Ref. No.
Part Name
Use / Function
Summary of Contents for NX-3720
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