LTC1745IFW View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC1745IFW

Low Noise,12-Bit, 25Msps ADC

Linear Technology 

WU

W

TI I G DIAGRA

LTC1745

N

ANALOG

INPUT

t3

ENCODE

t6

DATA

t5

CLKOUT

t2

t1

t4

DATA (N – 5)

D11 TO D0

t5

t7

OE

DATA

t8

DATA N

D11 TO D0, OF AND CLKOUT

DATA (N – 4)

D11 TO D0

DATA (N – 3)

D11 TO D0

1745 TD

W

FU CTIO AL BLOCK DIAGRA

AIN+

±1V

DIFFERENTIAL

ANALOG INPUT AIN–

SENSE

VCM

4.7µF

RANGE

SELECT

2.35VREF

BUFFER

S/H

12-BIT

AMP

PIPELINED ADC

12 OUTPUT

LATCHES

OVDD

OF

•••

D11

D0

CLKOUT

0.1µF

OGND

0.5V TO 5V

0.1µF

DIFF AMP

VDD

5V

1µF

1µF

1µF

GND

CONTROL LOGIC

REFLB

0.1µF

1µF

REFHA

4.7µF

REFLA REFHB ENC ENC MSBINV

0.1µF DIFFERENTIAL

1µF

ENCODE INPUT

1745 BD

OE

1745f

9

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