AD674B_15 datasheet(6/12 Pages) AD

tên linh kiện	AD674B

Giải thích chi tiết về linh kiện	Complete 12-Bit A/D Converters

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nhà sản xuất	AD [Analog Devices]

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6 / 12 page

REV. C

–6–

AD674B/AD774B

PIN FUNCTION DESCRIPTIONS

Symbol

Pin No.

Type

* Name and Function

AGND

9

P

Analog Ground (Common)

A0

4

DI

Byte Address/Short Cycle. If a conversion is started with A0 Active LOW, a full 12-bit conversion

cycle is initiated. If A0 is Active HIGH during a convert start, a shorter 8-bit conversion cycle

results. During Read (R/

C = 1) with 12/8 LOW, A

0 = LOW enables the 8 most significant bits,

and A0 = HIGH enables DB3–DB0 and sets DB7–DB4 = 0.

BIP OFF

12

AI

Bipolar Offset. Connect through a 50

Ω resistor to REF OUT for bipolar operation or to Analog

Common for unipolar operation.

CE

6

DI

Chip Enable. Chip Enable is Active HIGH and is used to initiate a convert or read operation.

CS

3

DI

Chip Select. Chip Select is Active LOW.

DB11–DB8 27–24

DO

Data Bits 11 through 8. In the 12-bit format (see 12/

8 and A

0 pins) these pins provide the upper

4 bits of data. In the 8-bit format, they provide the upper 4 bits when A0 is LOW and are

disabled when A0 is HIGH.

DB7–DB4

23–20

DO

Data Bits 7 through 4. In the 12-bit format these pins provide the middle 4 bits of data. In the

8-bit format they provide the middle 4 bits when A0 is LOW and all zeroes when A0 is HIGH.

DB3–DB0

19–16

DO

Data Bits 3 through 0. In both the 12-bit and 8-bit format these pins provide the lower 4 bits of

data when A0 is HIGH; they are disabled when A0 is LOW.

DGND

15

P

Digital Ground (Common)

REF OUT

8

AO

10 V Reference Output

R/

C

5

DI

Read/Convert. In the full control mode R/

C is Active HIGH for a read operation and Active LOW

for a convert operation. In the standalone mode, the falling edge of R/

C initiates a conversion.

REF IN

10

AI

Reference Input is connected through a 50

Ω resistor to +10 V Reference for normal operation.

STS

28

DO

Status is Active HIGH when a conversion is in progress and goes LOW when the conversion is

completed.

VCC

7

P

+12 V/+15 V Analog Supply

VEE

11

P

–12 V/–15 V Analog Supply

VLOGIC

1

P

5 V Logic Supply

10 VIN

13

AI

10 V Span Input, 0 V to +10 V unipolar mode or –5 V to +5 V bipolar mode. When using the

20 V Span, 10 VIN should not be connected.

20 VIN

14

AI

20 V Span Input, 0 V to +20 V unipolar mode or –10 V to +10 V bipolar mode. When using the

10 V Span, 20 VIN should not be connected.

12/

8

2

DI

The 12/

8 pin determines whether the digital output data is to be organized as two 8-bit words

(12/

8 LOW) or a single 12-bit word (12/8 HIGH).

*Types: AI = Analog Input, AO = Analog Output, DI = Digital Input, DO = Digital Output, P = Power

PIN CONFIGURATION

TOP VIEW

(Not to Scale)

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

AD674B

OR

AD774B

VLOGIC

12/

8

CS

A0

R/

C

CE

VCC

REF OUT

AGND

REF IN

VEE

BIP OFF

10 VIN

20 VIN

STS

DB11 (MSB)

DB10

DB9

DB8

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0 (LSB)

DGND

Số phần tương tự - AD674B_15

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Analog Devices	AD674BAD	247Kb / 12P	Complete 12-Bit A/D Converters REV. C
	AD674BAD	174Kb / 12P	Complete 12-Bit A/D Converters REV. C
	AD674BAD	174Kb / 12P	Complete 12-Bit A/D Converters REV. C
	AD674BAR	247Kb / 12P	Complete 12-Bit A/D Converters REV. C
	AD674BAR	174Kb / 12P	Complete 12-Bit A/D Converters REV. C

More results

Mô tả tương tự - AD674B_15

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Analog Devices	AD774B	174Kb / 12P	Complete 12-Bit A/D Converters REV. C
	AD674B	247Kb / 12P	Complete 12-Bit A/D Converters REV. C
	AD774BJNZ	174Kb / 12P	Complete 12-Bit A/D Converters REV. C
	AD674BTE	174Kb / 12P	Complete 12-Bit A/D Converters REV. C
	ADADC84	629Kb / 8P	FAST, COMPLETE 12-BIT A/D CONVERTERS REV. A
	ADADC84	1Mb / 12P	FAST COMPLETE 12 BIT A/D CONVERTERS REV. B
	ADADC85	1Mb / 12P	Fast, Complete 12-Bit A/D Converters REV. B
	ADDAC80	774Kb / 12P	COMPLETE LOW COST 12-BIT D/A CONVERTERS REV. A
	ADDAC80	232Kb / 16P	Complete Low Cost 12-Bit D/A Converters REV. B
	ADDAC80NZ-CBI-V	212Kb / 16P	Complete Low Cost 12-Bit D/A Converters REV. B

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