Datasheet

LTC2248/LTC2247/LTC2246
12
224876fa
FUNCTIONAL BLOCK DIAGRA
UU
W
SHIFT REGISTER
AND CORRECTION
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
OE
M0DE
OGND
OV
DD
224876 F01
INPUT
S/H
SENSE
V
CM
A
IN
–
A
IN
+
2.2µF
THIRD PIPELINED
ADC STAGE
OUTPUT
DRIVERS
CONTROL
LOGIC
SHDN
OF
D13
D0
•
•
•
Figure 1. Functional Block 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-D13, OF
224876 TD01
N – 5
N
Timing Diagram
TI I G DIAGRA
UWW