LTC2172-12 Linear Technology, LTC2172-12 Datasheet - Page 30

• Manufacturer Part Number: LTC2172-12
• Description: (LTC217x-12) 65Msps/40Msps/ 25Msps Low Power Quad ADCs
• Manufacturer: Linear Technology

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LTC2172-12/
LTC2171-12/LTC2170-12
TYPICAL APPLICATIONS
30
A
A
A
A
A
A
A
A
IN1
IN1
IN2
IN2
IN3
IN3
IN4
IN4
0.1μF
C2
0.1μF
C3
C1
2.2μF
C59
0.1μF
C29
0.1μF
C30
0.1μF
C17
1μF
SENSE
1μF
C5
V
DD
10
11
12
13
14
1
2
3
4
5
6
7
8
9
ENCODE
V
CLOCK
DD
A
A
V
A
A
REFH
REFH
REFL
REFL
A
A
V
A
A
IN1
IN1
CM12
IN2
IN2
IN3
IN3
CM34
IN4
IN4
R14
C47
0.1μF
1k
+
–
+
–
+
–
+
–
52
15
C7
0.1μF
ENCODE
CLOCK
LTC2172 Schematic
51
16
1μF
C4
17 18 19 20 21 22 23 24 25 26
50 49 48
C46
0.1μF
LTC2172
47 46 45 44 43 42 41
PAR/SER
SDO
OUT2A
OUT2A
OUT2B
OUT2B
OUT3A
OUT3A
OUT3B
OUT3B
OGND
DCO
DCO
OV
FR
FR
SPI BUS
DD
+
–
+
–
+
–
+
–
+
–
+
–
40
39
38
37
36
35
34
33
32
31
30
29
28
27
DIGITAL
OUTPUTS
DIGITAL
OUTPUTS
217212 TA02
C16
0.1μF
OV
DD
21721012f