LTC2240I-12(RevB) View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC2240I-12
(Rev.:RevB)

12-Bit, 170Msps ADC

Linear Technology 

FUNCTIONAL BLOCK DIAGRAM

LTC2240-12

AIN+

INPUT

AIN–

S/H

VCM

2.2μF

1.25V

REFERENCE

RANGE

SELECT

VDD

FIRST PIPELINED

ADC STAGE

SECOND PIPELINED

ADC STAGE

THIRD PIPELINED

ADC STAGE

FOURTH PIPELINED

ADC STAGE

FIFTH PIPELINED

ADC STAGE

GND

SHIFT REGISTER

AND CORRECTION

REF

SENSE

BUF

REFH

REFL INTERNAL CLOCK SIGNALS

DIFFERENTIAL

DIFF

REF

AMP

INPUT

LOW JITTER

CLOCK

CONTROL

LOGIC

DRIVER

REFLB REFHA

2.2μF

0.1μF

1μF

REFLA REFHB

0.1μF ENC+

1μF

ENC–

M0DE LVDS SHDN OE

Figure 1. Functional Block Diagram

OUTPUT

DRIVERS

OVDD

+

+–

–

OF

D11

•

•

•

+

–+

–

D0

CLKOUT

OGND

224012 F01

224012fb

11

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