CXA1977R 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA1977R

10-bit 20MSPS A/D Converter

Sony Semiconductor 

CXA1977R

Pin No. Symbol I/O Pin voltage

Equivalent circuit

Description

24 PS

ENABLE 23

I

TTL

PS 24

MINV 21

LINV 20

DGND2 17

DVCC1

15 Power save input.

400k 100k 100k

Power save

condition is entered

when high level is

input. In open

condition, this pin

turns to high level

16 input.

DGND1

DVCC1

15

20k 30k 30k

22 CLK

I

TTL

CLK 22

Clock input

DGND2 17

29 VREFTS —

+4V

30 VREFT

I

31 VREF1

— +3.5V

32 VREF2

—

+3.0V

33 VREF3

— +2.5V

34 VREFB

I

+2V

35 VREFBS —

VREFTS 29

VREFT 30

VREF1 31

VREF2 32

VREF3 33

VREFB 34

VREFBS 35

AGND 44

16

DGND1

Reference voltage

130

sense (Top)

Reference voltage

force (Top)

130

Reference voltage

force (Bottom)

Reference voltage

sense (Bottom)

–4–

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