2254 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'2254' PDF : 24 Pages View PDF
W
FUNCTIONAL BLOCK DIAGRA
LTC2255/LTC2254
AIN+
INPUT
AIN–
S/H
FIRST PIPELINED
ADC STAGE
SECOND PIPELINED
ADC STAGE
THIRD PIPELINED
ADC STAGE
FOURTH PIPELINED
ADC STAGE
FIFTH PIPELINED
ADC STAGE
SIXTH PIPELINED
ADC STAGE
VCM
2.2µF
1.5V
REFERENCE
RANGE
SELECT
REF
SENSE
BUF
SHIFT REGISTER
AND CORRECTION
REFH
REFL INTERNAL CLOCK SIGNALS
DIFF
CLOCK/DUTY
CONTROL
REF
CYCLE
LOGIC
AMP
CONTROL
REFH 0.1µF REFL
2.2µF
1µF
1µF
CLK
M0DE SHDN
OE
Figure 1. Functional Block Diagram
OUTPUT
DRIVERS
OVDD
OF
D13
•
•
•
D0
OGND
22554 BD01
WU
W
TI I G DIAGRA
ANALOG
INPUT
CLK
D0-D13, OF
tAP
N
tH
N+1
tL
Timing Diagram
N+2
N+3
N+4
N+5
tD
N–5
N–4
N–3
N–2
N–1
N
22554 TD01
22554fa
11
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