Datasheet

LTC2157-12/
LTC2156-12/LTC2155-12
30
21576512f
TYPICAL APPLICATIONS
LTC2157-12 Schematic
V
DD
V
DD
GND
A
INA
+
A
INA
–
GND
SENSE
V
REF
GND
V
CM
GND
A
INB
–
A
INB
+
GND
V
DD
V
DD
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
65
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
OGND
DA2_3
+
DA2_3
–
DA0_1
+
DA0_1
–
NC
NC
CLKOUT
+
CLKOUT
–
DB10_11
+
DB10_11
–
DB8_9
+
DB8_9
–
DB6_7
+
DB6_7
–
OGND
DA2_3
+
DA2_3
–
DA0_1
+
DA0_1
–
CLKOUT
+
CLKOUT
–
DB10_11
+
DB10_11
–
DB8_9
+
DB8_9
–
DB6_7
+
DB6_7
–
V
DD
GND ENC
+
ENC
–
GND OF
–
OF
+
NC NC DB0_1
–
DB0_1
+
DB2_3
–
DB2_3
+
DB4_5
–
DB4_5
+
OV
DD
DB4_5
+
DB4_5
–
DB2_3
+
DB2_3
–
DB0_1
+
DB0_1
–
OF
+
OF
–
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
V
DD
PAR_SER
CS
SCK
SDI
SDO
GND
DA10_11
+
DA10_11
–
DA8_9
+
DA8_9
–
DA6_7
+
DA6_7
–
DA4_5
+
DA4_5
–
OV
DD
DA10_11
+
DA10_11
–
DA8_9
+
DA8_9
–
DA6_7
+
DA6_7
–
DA4_5
+
DA4_5
–
SDO
SDI
SCK
CS
V
DD
V
DD
C4
2.2µF
A
INB
+
A
INB
–
C29
0.1µF
R12
100Ω
R8
100Ω
OV
DD
OV
DD
LTC2157-12
V
DD
ENC
+
ENC
–
R56
100Ω
PAR/SER
R7
10Ω
R6
10Ω
C78
0.1µF
C14
0.1µF
C79
0.1µF
C13
0.1µF
C15
0.1µF
C5
0.1µF
C7
0.1µF
C11
0.1µF
C12
0.1µF
C3
1pF
A
INA
+
A
INA
–
R34
10Ω
R33
10Ω
C27
1pF
21576512 TA11