Datasheet

ManualsBrandsLINEAR TECHNOLOGY ManualsData collecting ICsData acquisition IC - AD converter (ADC) External , Internal QFN 40

LTC2265-12/

LTC2264-12/LTC2263-12

19

22654312fb

FUNCTIONAL BLOCK DIAGRAM

Figure 1. Functional Block Diagram

PLL

DATA

SERIALIZER

SAMPLE-

AND-HOLD

12-BIT

ADC CORE

CHANNEL 1

ANALOG

INPUT

12-BIT

ADC CORE

CHANNEL 2

ANALOG

INPUT

1.8V

V

DD

1.8VENC

+

ENC

–

OV

DD

V

DD

/2

DIFF

REF

AMP

REF

BUF

2.2µF

0.1µF 0.1µF

0.1µF

REFH REFL

RANGE

SELECT

1.25V

REFERENCE

REFH REFL

OUT1A

OUT1B

OUT2A

OUT2B

DATA

CLOCK OUT

FRAME

OGND

VCM1

GND VCM2

0.1µF0.1µF

SDOCS

SENSE

V

REF

1µF

MODE

CONTROL

REGISTERS

SCKPAR/SER SDI

226512 F01

SAMPLE-

AND-HOLD