CXA1977R View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXA1977R

10-bit 20MSPS A/D Converter

Sony Semiconductor 

CXA1977R

Pin Description

Pin No. Symbol

I/O Pin voltage

1 to 5

8 to 12

D0 to D9

O

46 UNDER O

TTL

Equivalent circuit

45 DVCC2

1 D0 to 5 D4

8 D5 to 12 D9

46 UNDER

47 OVER

Description

Digital output

D0 (LSB) to

D9 (MSB)

Underflow output

47 OVER

O

15 DVCC1

—

45 DVCC2

6, 14,

16, 48

DGND1

—

18

25 DVCC3

—

26

17 DGND2 —

44 AGND

—

20 LINV

I

21 MINV

I

23 ENABLE I

200k

+5V

(typ.)

GND

+5V

(typ.)

GND

TTL

ENABLE 23

PS 24

MINV 21

LINV 20

DGND2 17

16 DGND1

17 DGND2

Overflow output

Digital power supply

Digital ground

Digital power supply

Digital negative

power supply

Analog negative

power supply

DVCC1

15

This input can invert

output form of D0 to

D8. In open

condition, this pin

turns to high level

input. (For details,

refer to the Output

Formula Chart.)

400k 100k 100k

This input can invert

output form of D9

(MSB). In open

condition, this pin

turns to high level

input. (For details,

16 refer to the Output

Formula Chart.)

DGND1

3-state control.

Turns to enable

when low is input.

In open condition,

this pin turns to high

level input.

–3–

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