Schematics

1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2021/9/17 Sheet of
File: E:\yan\创新\3311TX-A 49.SchDoc Drawn By:
CH-
1
2
3
14
4
13
5
12
6
11
7
10
8
9
*
U2
HEAER7X2
VDD GND
L3
1.8UH
ANT
C9
100P
Q4
J3Y
L2
2.2UH
C8
220P
R14
10K
C5
47P
Q3
J3Y
L1
1.0UH
Y1
49.860MHz
R12
68K
C4
NG
C7
100P
GND
VCC
IN OUT
VSS
1
U1
662K
GND
VDD
C2
106P
GND
*
Q1
2300
GND
R4
1R
CH-
R5
20K
R7
47K
VDD
R3
10K
R2
1K
R1
2.2K
*
D1
LEDG
GND
R11
2.2K
*
D2
LEDR
GND
C6
NG
ON/OFF
L
*
S2
/
S3
B
*
S4
Ascends
*
S5
Descend
*
S6
F
*
S7
GND
GND
GND
GND
GND
GND
F
B
R
C3
106P
GND
CH+
PTC
GF050
VCC
YY-CX3326TX/3311TX-A
GND
GND GND
49.860MHz