TH-D72A/D72E
16
TX-RX unit (X57-784X-XX)
Ref. No.
Use/Function
Operation/Condition/Compatibility
IC201
OP AMP
APC
IC202
RF AMP
TX AMP
IC203
OP AMP
APC
IC351
OP AMP
AM AGC
IC352
Analog switch
AM/FM select
IC353
FM system
Band A
IC354
FM system
Band B
IC431
PLL system
Band A
IC512
DC/DC converter
Charge pump for PLL
IC513
PLL system
Band B
IC514
5.3V AVR
Charge pump
IC611
SUB MCU
MCU
IC639
Voltage detector
10V for DC/DC converter
IC641
Charge Li-ion
battery
IC642
OP AMP
Charge voltage/current detect
IC643
1.5V AVR
Charge
IC644
DC/DC converter
+B
IC645
4.5V AVR
45C
IC646
3.3V AVR
33CS
IC701
OP AMP
LCD
IC702
RS-232C driver
RS-232C COM port
IC703
DC/DC converter
LCD
IC705
AVR
AFB
IC708,709
Analog switch
MCU/TNC
IC710
USB driver
USB
IC712
OP AMP
MIC AMP
IC713
Voltage detector
INT
IC714
OP AMP
VOX AMP
IC715
3.3V AVR
33M
IC716
OP AMP
MIC limiter AMP
IC717
RTC
Real-time clock
IC718
3.3V AVR
33C
IC719
4.7V AVR
47C
IC720
Analog switch
RX band A/B
IC721
D/A converter
Signal level adjust
IC722
OP AMP
RX signaling
IC724
Flip-Flops
DIVIDER
IC725
Comparator
A/D converter for TNC signal
IC726
Voltage detector
Reset
IC727
MCU
TNC
IC728
ASIC
TNC MODEM
IC730
EEPROM
Main memory
Ref. No.
Use/Function
Operation/Condition/Compatibility
IC731
EEPROM
GPS log memory
IC732
Comparator
A/D converter for TNC signal
IC733
OP AMP
TNC signal
IC734
AF power AMP
SP output
IC735
Analog switch
9600bps mute
IC736
3.3V AVR
USB IC
IC737
MCU
Main
Q1
1st mixer
UHF band B
Q2
1st mixer
VHF band A
Q3
1st mixer
UHF band A
Q4
1st mixer
VHF band B
Q5
RF AMP
UHF band B
Q6
RF AMP
UHF band A
Q7
RF AMP
VHF band A
Q8
RF AMP
VHF band B
Q9
RF AMP
UHF band B
Q10
RF AMP
UHF band A
Q11
RF AMP
VHF band A
Q12
Switch
UHF AIP
Q13
RF AMP
VHF band B
Q14
Switch
UHF AIP
Q15,16
Switch
VHF AIP
Q201,204
RF AMP
Buffer
Q205
Switch
APC
Q207
AMP
APC
Q208
DC switch
144T
Q209
DC switch
430T
Q210,211
DC switch
45TX
Q212
DC switch
APC
Q214
RF AMP
TX drive AMP
Q215
RF AMP
TX fi nal AMP
Q352
AMP
AM
Q353
Switch
AM AGC
Q354
AMP
AM
Q355
Switch
AM AGC
Q356
AMP
AM
Q357
RF AMP
2nd local AMP
Q358
IF AMP
Band A
Q359
IF AMP
Band B
Q433
AMP
Ripple fi lter
Q434
RF AMP
Band A PLL
Q435
Oscillator
Band A VCO
Q436~438 RF AMP
Buffer
COMPONENTS DESCRIPTION