LTC2172-12 Linear Technology, LTC2172-12 Datasheet - Page 18
LTC2172-12
Manufacturer Part Number
LTC2172-12
Description
(LTC217x-12) 65Msps/40Msps/ 25Msps Low Power Quad ADCs
Manufacturer
Linear Technology
Datasheet
1.LTC2172-12.pdf
(32 pages)
- Current page: 18 of 32
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LTC2172-12/
LTC2171-12/LTC2170-12
FUNCTIONAL BLOCK DIAGRAM
18
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
ANALOG
ANALOG
ANALOG
ANALOG
INPUT
INPUT
INPUT
INPUT
SENSE
1μF
V
REF
AND-HOLD
AND-HOLD
AND-HOLD
AND-HOLD
REFERENCE
SAMPLE-
SAMPLE-
SAMPLE-
SAMPLE-
SELECT
RANGE
GND
1.25V
REF
BUF
ADC CORE
ADC CORE
ADC CORE
ADC CORE
12-BIT
12-BIT
12-BIT
12-BIT
1.8V
V
DD
AMP
DIFF
REF
Figure 1. Functional Block Diagram
REFH
REFH
2.2μF
0.1μF
0.1μF
REFL
REFL
0.1μF
ENC
V
PLL
+
DD
ENC
VCM12
/2
0.1μF
–
VCM34
0.1μF
PAR/SER
CS
REGISTERS
CONTROL
MODE
SERIALIZER
SCK
DATA
1.8V
SDI
OV
DD
SDO
217212 F01
OUT1A
OUT1B
OUT2A
OUT2B
OUT3A
OUT3B
OUT4A
OUT4B
DATA
CLOCK OUT
FRAME
OGND
21721012f
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