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(1)
2.7V
(2)
(3)
Analog GND
(4)
(5)
(6)
GNDPA
(7)
(8)
(9)
C508
10uF
(10)
6.3V
(11)
R508
10
(12)
(13)
(14)
(15)
(16)
R502
390
C503
K1.0
(17)
C505
10p
(18)
(19)
(20)
GNDA
C526
K0.1
(21)
(22)
(23)
R509
100k
(24)
R505
4.7k
(25)
R506
4.7k
(26)
R507
4.7k
(27)
(28)
Q543
E
R543
B
NC
C
NC
(29)
(30)
EEPROM
(31)
Writing
(32)
protection TR
(33)
(34)
R436
1k
R431
NC
C433
R433
1k
1u
C523
10p
R417
390
C414
RA401
1u
3
2
PDN
4
1
0
C415
1u
UART
RX
TX
IC371
2.7V
2.7V
3.1V
3
4
VDOUT
ONOFF
2
VSS
5
VOUT
1
VIN
R380
NC
GND_0 GND_0
R376
1.0M
R378
1.0M
Overvoltage detection circuit
R369
33k
2.7V
Charging control TR
Charging detection
Test Signal:1kHz
Input from Dummy Set PP MIC: -45dBm/600
C435 22u
C437
22u
RA403
3
2
4
1
0
C436
NC
GND_0
MICP
RA402
R412
0
2.2k
3
2
R413
0
4
1
MICM
IC374
2.0V_Reset
R374
1
OUT
VSS
220k
2
VDD
V_BAT1
3.1V
PDN_IC
DC/DC
IC372
IC373
3.1V
L374
1
VOUT
5
K
A
EXT
10n
3
4
2
VDD
S
NC
2
5
3
4
ON/*OFF
VSS
G
D
1
6
GND_0 GND_0
GND_0
2.6~3.0V
R366
3.3k
Q361
R361
R368
47k
NC
Q364
Q362
Q390
Q531
KX-TPA50 SCHEMATIC DIAGRAM (Handset_Main Part)
109
KX-TGP500B04/KX-TPA50B04
SP phone RX
(MIC M ute : O N)
2.85V p - p /8
(V ol .M ax )
Voice circuit
1
+
SP_PHONE
2
-
GND_0
GND_0
C439
J330p
CN431
1
L432
100
2
3
HEADSET_JACK
4
5
L434
H eadset RX
(MIC M ute :ON)
412 m V p - p /150
(V ol . M ax )
SPP
1
+
RECEIVER
2
-
H andset RX
SPM
(M ic M ute : O N)
437 m V p - p /40
(V ol . M ax )
GND_0
2
MIC
1
GND_0
GND_0
4
VSS
3
GND_0
NC
VBAT
F301
5.6n
BATTP
BATTERY
BATTN
GND_0
CHG1
CHARGE
Terminal
GND_0
CHG2
GND_0
IC390
1
2
VOUT
VIN
3
NC
VS S
4
NC: No Components
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