NX-900
23
COMPONENTS DESCRIPTION
TX-RX unit (X57-8060-10)
Ref. No.
Part Name
Description
IC1
IC
Temperature sensor
IC3
IC
PLL IC
IC4
IC
Buffer AMP (VCO tune)
IC5
IC
VCO modulation/Buffer AMP (CV)
IC102
IC
Power module
IC103
IC
Auto power control
IC201
IC
Buffer AMP (2nd IF DET)
IC202
IC
IF IC
IC203
IC
Buffer AMP (RSSI/VAGC)
IC401
IC
Voltage detector (BINT)
IC402
IC
Voltage regulator (33M)
IC403
IC
Voltage regulator (80C)
IC404
IC
Voltage regulator (50C)
IC405
IC
DC/DC converter (50M)
IC406
IC
Voltage regulator (33C)
IC407
IC
Voltage regulator (33GPS)
IC408
IC
Voltage regulator (33A)
IC409
IC
Voltage regulator (15M)
IC501
IC
Flash memory
IC503
IC
SRAM
IC504
IC
RTC
IC506
IC
Reset (ASIC)
IC507
IC
Buffer AMP
IC508
IC
Buffer AMP (18.432MHz)
IC509
IC
Buffer AMP (BER CLK/BER DATA)
IC510
IC
ASIC
IC511
IC
AND (CPS/FSX0)
IC512
IC
Level shift (AND ITXD1/SCTXD)
IC513
IC
Buffer AMP (TXD2)
IC514
IC
Level shift (I2CCK/I2CDT)
IC515
IC
Level shift (TXDO/RTSO)
IC516
IC
Level shift (RXDO/CTSO)
IC517
IC
I/O expander
IC518
IC
RS-232C driver
IC701
IC
LPF (RXAF)
IC702
IC
LPF (MOD)
IC703
IC
LPF (APC/DEO)
IC704
IC
Buffer AMP (2nd IF DET)
IC705
IC
BPF/Buffer AMP (SQ)
IC706
IC
LPF/SUM AMP
Display unit (X54-3680-10)
Ref. No.
Part Name
Description
IC901
IC
AFO/BLC switch
IC902
IC
AF buffer AMP (AFO)
IC903
IC
Voltage regulator (5C)
IC904
IC
Voltage regulator (33C)
IC905
IC
Bus buffer (TXD0)
IC906
IC
DC/DC converter (N100C)
IC907
IC
Dual bus buffer (RXD0/RXD1)
IC908
IC
AND gate (TXD1/RXD0)
IC909
IC
Buffer AMP (LCD Contrast ADJ)
IC910
IC
Bus buffer (D0-D7)
IC911
IC
MCU
IC912
IC
Bus buffer (A1-A2)
IC913
IC
Flash memory
Q901
FET
AFO switch
Q902
Transistor
HK/RXD0 switch
Q904
Transistor
HK/RXD0 switch
Q905
Transistor
TX/RX LED (TX)
Q906
Transistor
TX/RX LED (BUSY)
Q908
Transistor
LCD backlight switch
Q909
Transistor
Dimmer switch (LCD backlight)
Q910
Transistor
LCD backlight switch
Q911
FET
Dimmer switch (LCD backlight)
Q913
FET
LCD reset switch
D901
Varistor
Surge absorption (DM/KVL)
D902
Varistor
Surge absorption (HK/RXD)
D903
Zener Diode
Over DC supply protection
D904
Varistor
Surge absorption (BLC/AFO)
D906
Varistor
Line protection (SB)
D907
Zener Diode
Over DC supply protection
D908
Diode
KEY matrix
D910
Diode
Reverse current prevention (HK/
RXD)
D911,912
Diode
KEY matrix
D913
Diode
Line protection (PTT/TXDO)
D914
LED
TX/RX LED
D915~926
LED
LCD backlight
D927~936
LED
KEY backlight
D937
Diode
Level shift (PRST)
Summary of Contents for NEXEDGE NX-900
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