LTC2222 datasheet(13/28 Pages) LINER

Part #	LTC2222

Description	12-Bit,105Msps/80Msps ADCs

PDF	28 Pages

Scroll/Zoom	100%

Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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13 / 28 page

LTC2222/LTC2223

22223fa

FUNCTIONAL BLOCK DIAGRA

DIFF

REF

AMP

REF

BUF

2.2

µF

0.1

µF0.1µF

µF

INTERNAL CLOCK SIGNALS

REFH

REFL

DIFFERENTIAL

INPUT

LOW JITTER

CLOCK

DRIVER

RANGE

SELECT

1.6V

REFERENCE

FIRST PIPELINED

ADC STAGE

FIFTH PIPELINED

ADC STAGE

FOURTH PIPELINED

ADC STAGE

SECOND PIPELINED

ADC STAGE

ENC+

REFHA

REFLB

REFLA REFHB

ENC–

SHIFT REGISTER

AND CORRECTION

M0DE

OGND

OVDD

22223 F01

INPUT

S/H

SENSE

VCM

AIN

–

AIN

2.2

µF

THIRD PIPELINED

ADC STAGE

OUTPUT

DRIVERS

CONTROL

LOGIC

SHDN

D11

CLKOUT

•

Figure 1. Functional Block Diagram

tAP

N + 1

N + 2

N + 4

N + 3

ANALOG

INPUT

tOE

N – 5

N – 4

N – 3

N – 2

N – 1

ENC–

ENC+

CLOCKOUT

D0-D11, OF

22223 TD02

DATA

OF, D0-D11, CLKOUT

Timing Diagram

TI I G DIAGRA S

LTC2222 Datasheet(PDF) 13 Page - Linear Technology

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