LTC2222CUK(RevA) View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC2222CUK
(Rev.:RevA)

12-Bit, 105Msps/80Msps ADCs

Linear Technology 

W

FUNCTIONAL BLOCK DIAGRA

LTC2222/LTC2223

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

VCM

2.2µF

1.6V

REFERENCE

RANGE

SELECT

REF

SENSE

BUF

SHIFT REGISTER

AND CORRECTION

REFH

REFL INTERNAL CLOCK SIGNALS

DIFFERENTIAL

DIFF

INPUT

CONTROL

REF

LOW JITTER

LOGIC

AMP

CLOCK

DRIVER

REFLB REFHA REFLA REFHB

2.2µF

ENC+ ENC–

M0DE SHDN

OE

0.1µF

0.1µF

1µF

1µF

Figure 1. Functional Block Diagram

OUTPUT

DRIVERS

OVDD

OF

D11

•

•

•

D0

CLKOUT

OGND

22223 F01

TI I G DIAGRA S

ANALOG

INPUT

ENC–

ENC+

D0-D11, OF

CLOCKOUT

OE

DATA

Timing Diagram

tAP

N

tH

N+1

tL

N+2

N+3

N+4

tD

N–5

tC

N–4

N–3

N–2

N–1

22223 TD02

tOE

tOE

OF, D0-D11, CLKOUT

22223fa

13

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