ATS-20_Plus_Schematic.pdf

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A
A
Power input, battery charging
SW1
SW_SPDT
2
3
J1
USB_C_Receptacle_USB2.0
R1
1R
A4
A5
B5
A7
B7
A6
B6
1
SHIELD
GND
SBU1
SBU2
A8
B8
Conn_01x01_Male
J2
Plated hole
GND
GND
GND
GND
R2
1R
C1
C
C2
C
R3
300R
4
8
LED1
LED
7
6
VCC
CE
TEMP
PP
PROG
OFF
1
Power switch
V_BAT
ON
U1
TP4056
BAT
B
VBUS
CC1
CC2
D-
D-
D+
D+
5
C3
C
C4
C
U2
CL9901A33L3M
3.3V_Digital
C18
C
B
1
2
~{STDBY}
GND
~{CHRG}
GND
GND
LED2
LED
GND
3.3V LDO CL9901A33L3M (SMD code 622K)
S1
A1
GND
1
2
GND
GND
GND
1
2
J4
Conn_01x02_Male
Pads for soldering the battery wires
J?
Conn_01x02
LiPo battery connector
C
1
C9
C
GND
R4
1k
GND
GND
GND
VIN
VOUT
3
9
C
Analog part
3.3V for analog part LDO section
3.3V LDO CL9901A33L3M (SMD code 622K)
D
U3
CL9901A33L3M
V_BAT
C5
C
C6
C
3.3V_Analog
C19
C
C20
C
D
VIN
GND
GND
1
VOUT
GND
GND
GND
GND
Audio amplifiers section
V_BAT
8
E
VSS V+
Receiver section
C15
C
C16
C
E
U6C
TDA1308
14
U4
Si4732-A10
RST
3.3V_Analog
SD
SC
RCLK
9
3.3V_Analog
C12
C
R5
2.2k
R7
10k
GND
GND
GND
Audio_R
C7
C
~{RST}
VDD
U6A
TDA1308
3
Audio_R
AM
(SSB)
3
SW2
SW_SPDT
1
2
1
R16
10k
GND
3.3V_Analog
FM
GND
GND
5
4
76-108 MHz bandpass filter
3
3
GND
C25
C
U5
BP76108
OUT
GND
IN
1
Audio_L
5
6
+
7
-
R10
4.7k
2
2
+
1
-
R9
4.7k
4
GND
C8
C
Y1
32.768 kHz
10
~{SEN}
12
SDIO
11
SCLK
13
RCLK
C17
C
ROUT/[DOUT]
LOUT/[DFS]
16
ROUT
1
LOUT
Audio_L
C13
C
R6
2.2k
L1
L
GND
GPO3
2
3
4
GPO3/[DCLK]
GPO2/[~{INT}]
GPO1
GND
AMI
FMI
RFGND
8
AMI
6
FMI
7
R11
10k
S
R
RN
T
TN
C10
C
FM_Earphone_Antenna
J5
Conn_Coaxial
10k
R8
C
C14
C22
C
F
GND
15
GND
C11
C
R13
21k
AudioJack3_SwitchTR
J6
FM_Earphone_Antenna
F
R14
68k
C26
C
U7
MD8002
V_BAT
U6B
TDA1308
6
C21
C
L2
L
C27
C
GND
Unidentified RF amplifier
SMD marking "DKHE"
4
3
IN-
IN+
3.3V_Analog
C24
C
VCC
þÿ "
1
2
R12
10k
L3
L
GND
GND
6
Vo1
5
GND
GND
C23
C
2
2
Vo2
BYP
GND
8
GND
R15
DNP
GND
GND
1
SDN
G
1
2
Place for 0R resistor to bypass filter and amplifier, not populated
GND
J7
Conn_01x02_Male
Speaker connector
7
G
H
H
Digital part
3.3V_Digital
SC
SD
GND
A1
Arduino_Nano_v3.x
30
17
3V3
27
+5V
3.3V_Digital
1
2
3
4
J8
Conn_01x04_Male
I
Buttons ribbon cable connector
OLED
J9
Conn_01x04_Male
1
2
3
4
GND
ENC_B
ENC_A
MODE
BW
VOL+
VOL-
BAND+
BAND-
STEP
AGC
RST
2
1
5
6
7
8
9
10
11
12
13
14
15
16
VIN
D0/RX
D1/TX
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
28
~{RESET}
3
~{RESET}
V_BAT
AREF
A0
A1
A2
A3
A4
A5
A6
A7
18
19
ENC_SW
20
BAT_MEAS
21
22
SD
23
SC
24
25
26
R17
10k
BAT_MEAS
R18
10k
I
1
2
3
4
5
3.3V_Digital
6
BAND+
7
ENC_SW
8
MODE
9
BW
10
VOL-
11
GND
12
BAND-
13
GND
14
3.3V_Digital
SC
SD
AGC
SD
STEP
SC
VOL+
GND
J
B1
SW_Push
STEP
{STEP AGC BAND+ BAND- VOL+ VOL- BW MODE ENC_A ENC_B ENC_SW SD SC}
4
GND
29
GND
J3
Conn_01x14
GND
J
B7
SW_Push
ENC_A
B3
SW_Push
BAND+
B5
SW_Push
VOL+
BW
GND
ENC_B
A
C
B
S1
ENC_SW
S2
J10
Conn_01x05
ENC_A
AGC
BAND-
VOL-
MODE
ENC1
RotaryEncoder_Switch
Encoder ribbon cable connector
GND
GND
GND
GND
K
GND
GND
ENC_B
B2
SW_Push
B4
SW_Push
B6
SW_Push
B8
SW_Push
ENC_SW
GND
GND
GND
GND
1
2
3
4
5
K
Traced from ATS-20+ device
by Emmemad
Sheet: /
File: ATS-20_Plus_Trace.kicad_sch
Title: ATS-20+ schematic
Size: User
Date:
KiCad E.D.A. eeschema (6.0.1)
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Rev: 1
Id: 1/1

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