Datasheet

LTC2172-12/
LTC2171-12/LTC2170-12
31
21721012fb
Typical applicaTions
LTC2172
8
7
6
5
4
3
2
1
A
IN1
+
A
IN1
–
V
CM12
A
IN2
+
A
IN2
–
REFH
REFH
REFL
REFL
A
IN3
+
A
IN3
–
V
CM34
A
IN4
+
A
IN4
–
OUT2A
+
OUT2A
–
OUT2B
+
OUT2B
–
DCO
+
DCO
–
OV
DD
OGND
FR
+
FR
–
OUT3A
+
OUT3A
–
OUT3B
+
OUT3B
–
9
10
11
12
13
14
33
34
35
36
37
38
39
40
32
31
30
29
28
27
V
DD
V
DD
ENC
+
ENC
–
CS SCK SDI GND OUT4B
–
OUT4B
+
OUT4A
–
OUT4A
+
1615
V
DD
17 18 19 20 21 22 23 24 25 26
V
DD
V
DD
SENSE
GND
V
REF
PAR/SER
SDO
GND
OUT1A
+
OUT1A
–
OUT1B
+
OUT1B
–
5152 50 49 48
SDO
V
DD
PAR/SER
SENSE
47 46 45 44 43 42 41
C30
0.1µF
C1
2.2µF
C59
0.1µF
C3
0.1µF
C2
0.1µF
C29
0.1µF
C7
0.1µF
SPI BUS
DIGITAL
OUTPUTS
OV
DD
C46
0.1µF
C47
0.1µF
A
IN1
A
IN1
A
IN2
A
IN2
A
IN3
A
IN3
A
IN4
A
IN4
ENCODE
CLOCK
ENCODE
CLOCK
217212 TA02
R14
1k
DIGITAL
OUTPUTS
C16
0.1µF
C4
1µF
C5
1µF
C17
1µF
LTC2172 Schematic