LTC2379-18
电路板布局
1
2
3
C18
选择
–IN1
C61
10μF
6.3V
C39
3300pF R16
0Ω 4
NPO
OUT2 5
R36
20Ω
LTC2379-18
IN
–
GND
GND
GND
GND
5
RDL / SDI
R7
1k
3
6
10
16
1
C40
3300pF
NPO
C19
3300pF
1206 NPO
R19
0Ω
V
DD
2
OV
DD
15
REF 7
8
REF / DGC
IN
+
CNV
SCK
SDO
忙
R45
Ω
R15
选择
R9
选择
C42
15pF
C58
选择
C9
10μF
6.3V
C10
0.1μF
+2.5V
R34
0Ω
R37
选择
C62
1μF
V
+
C57
0.1μF
V
–
C55
1μF
R35
选择
R38
选择
6
C45 V
–
10μF
C8
1μF
R18
1k
JP2
CM
演示板的局部示意图
1
V
REF/2
2
EXT
C63
10μF
6.3V
C43
0.1μF
C59
1μF
C44
1μF
C60
0.1μF
9V至
10V
3
E7
HD1X3-100
EXT_CM
C46
1μF
R40
1k
耦合
AC
DC
JP5
HD1X3-100
1
2
3
J8
C49
选择
A
IN =
R39
0Ω
R41
选择
C47
OPT C48
10μF
6.3V
+
–
2 + IN2
–
+
22
R1
33Ω
+3.3V
C2
0.1μF
+3.3V
C3
0.1μF
1
+3.3V
6
CLR \\
Q\
3
3
5
DB17
DB16
J2
CON- EDGE 40-100
PR \\
Q
5
U3
NL17SZ74
C56
0.1μF
JP6
FS
1
2
3
HD1X3-100
U6
选择
NC7SZ66P5X 5
CNV
V
CC
9
2 B
A 1
13 SCK
OE 4
14 SDO
GND
11 BUSY
3
12 RD
+3.3V
U9
NC7SZ04P5X
5
2
4
3
R17 R13
2k
1k
C15
0.1μF
+3.3V
C13
0.8V
REF
0.1μF
V
REF
R8
33Ω
DC590 DETECT
TO CPLD
4
R4
7 33Ω 4
CP
GND
8
D
V
CC
2
+3.3V
C4
0.1μF
5
4
2
C11
0.1μF
R31
选择
V
+
+3.3V
U15
7 LT6350CMS8
SHDN
C7
0.1μF
OUT1 4
R32
20Ω
+2.5V
C6
10μF
6.3V
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
DB10
DB11
DB12
DB13
DB14
DB15
CLKOUT
C16 1
0.1μF
3
V+
C20
47μF
6.3V
0805
4
U4
NC7SVU04P5X
2 CNVST_33
从CPLD
9V至10V
R3
CLK
33Ω
TO CPLD
1
2
3
4
U20
LTC6655AHMS8-5
8
SHDN
GND
7
V
IN
OUT_F
6
GND OUT_S
5
GND
GND
R32
0Ω
8 + IN1
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
J3
DC590
R10
4.99k
R11
4.99k
R12
4.99k
SDO
1
3
5
7
9
11
13
2
4
6
8
10
12
14
U7
C14
0.1μF 8 24LC025 -I / ST
V
CC
SCL
SCK
SDA
WP
CNV
ARRAY
A2
EEPROM
A1
A0
V
SS
4
237918 BL
+3.3V
C5
0.1μF
+3.3V
C1
0.1μF
R2
1k
5
J1
CLK
IN
2
R5
49.9Ω
1206
U2
R6 3 U8
3
NC7SZ04P5X NC7SVU04P5X
1k
耦合
AC
DC
JP1
HD1X3-100
J4
A
IN +
R14
0Ω
C17
10μF
6
5
7
3
2
1
237918p
