Datasheet

LTC2253/LTC2252
11
22532fa
FUNCTIONAL BLOCK DIAGRA
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Figure 1. Functional Block Diagram
DIFF
REF
AMP
REF
BUF
2.2µF
1µF1µF
0.1µF
INTERNAL CLOCK SIGNALSREFH REFL
CLOCK/DUTY
CYCLE
CONTROL
RANGE
SELECT
1.5V
REFERENCE
FIRST PIPELINED
ADC STAGE
FIFTH PIPELINED
ADC STAGE
SIXTH PIPELINED
ADC STAGE
FOURTH PIPELINED
ADC STAGE
SECOND PIPELINED
ADC STAGE
REFH
REFL
CLK
SHIFT REGISTER
AND CORRECTION
OEM0DE
OGND
OV
DD
22532 F01
INPUT
S/H
SENSE
V
CM
A
IN
–
A
IN
+
2.2µF
THIRD PIPELINED
ADC STAGE
OUTPUT
DRIVERS
CONTROL
LOGIC
SHDN
OF
D11
D0
•
•
•
Timing Diagram
t
AP
N + 1
N + 2
N + 4
N + 3
N + 5
N
ANALOG
INPUT
t
H
t
D
t
L
N – 4 N – 3 N – 2 N – 1
CLK
D0-D11, OF
22532 TD01
N – 5
N
TI I G DIAGRA
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