LTC2223 Linear Technology, LTC2223 Datasheet - Page 13

• Manufacturer Part Number: LTC2223
• Description: (LTC2222 / LTC2223) 105Msps/80Msps ADCs
• Manufacturer: Linear Technology

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FUNCTIONAL BLOCK DIAGRA
TI I G DIAGRA S
W U
U
SENSE
2.2µF
A
A
V
IN
IN
CM
+
–
INPUT
REFERENCE
S/H
U
SELECT
RANGE
1.6V
REF
BUF
D0-D11, OF
CLOCKOUT
ANALOG
INPUT
DATA
W
ENC
ENC
FIRST PIPELINED
OE
–
+
ADC STAGE
AMP
DIFF
REF
N
t
H
0.1µF
t
OE
t
t
t
AP
D
C
1µF
N – 5
REFLB
Figure 1. Functional Block Diagram
SECOND PIPELINED
t
REFH
L
ADC STAGE
REFHA
N + 1
W
2.2µF
Timing Diagram
REFL
OF, D0-D11, CLKOUT
REFLA REFHB
N – 4
1µF
0.1µF
INTERNAL CLOCK SIGNALS
N + 2
THIRD PIPELINED
DIFFERENTIAL
ENC
LOW JITTER
ADC STAGE
DRIVER
CLOCK
INPUT
+
N – 3
ENC
–
t
OE
N + 3
M0DE
FOURTH PIPELINED
N – 2
CONTROL
LOGIC
SHDN
ADC STAGE
LTC2222/LTC2223
N + 4
OE
N – 1
22223 TD02
AND CORRECTION
FIFTH PIPELINED
SHIFT REGISTER
ADC STAGE
DRIVERS
OUTPUT
OGND
22223 F01
•
•
•
13
OV
OF
D11
D0
CLKOUT
DD
22223fa