ML2258CIQ datasheet(2/12 Pages) MICRO-LINEAR

Il numero della parte	ML2258CIQ

Spiegazioni elettronici	關P Compatible 8-Bit A/D Converter with 8-Channel Multiplexer

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Produttore elettronici	MICRO-LINEAR [Micro Linear Corporation]

Homepage	http://www.microlinear.com

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2 / 12 page

ML2258

2

PIN CONFIGURATION

ML2258

28-Pin DIP (P28)

ML2258

28-Pin PCC (Q28)

IN3

IN4

IN5

IN6

IN7

START

EOC

DB3

OE

CLK

VCC

+VREF

GND

DB1

IN2

IN1

IN0

ADDR0

ADDR1

ADDR2

ALE

DB7

DB6

DB5

DB4

DB0

–VREF

DB2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

TOP VIEW

PIN DESCRIPTION

PIN# NAME

FUNCTION

1

IN3

Analog input 3.

2

IN4

Analog input 4.

3

IN5

Analog input 5.

4

IN6

Analog input 6.

5

IN7

Analog input 7.

6

START

Start of conversion. Active high digital

input pulse initiates conversion.

7

EOC

End of conversion. This output goes

low after a START pulse occurs, stays

low for the entire A/D conversion, and

goes high after conversion is

completed. Data on DB0–DB7 is valid

on rising edge of EOC and stays valid

until next EOC rising edge.

8

DB3

Data output 3.

9

OE

Output enable input. When OE = 0,

DB0–DB7 are in high impedance

state; OE = 1, DB0–DB7 are active

outputs.

10 CLK

Clock. Clock input provides timing for

A/D converter, S/H, and digital

interface.

11 VCC

Positive supply. 5V ± 10%.

12 +VREF

Positive reference voltage.

PIN# NAME

FUNCTION

13

GND

Ground. 0V, all analog and digital

inputs or outputs are reference to this

point.

14

DB1

Data output 1.

15

DB2

Data output 2.

16

–VREF

Negative reference voltage.

17

DB0

Data output 0.

18

DB4

Data output 4.

19

DB5

Data output 5.

20

DB6

Data output 6.

21

DB7

Data output 7.

22

ALE

Address latch enable. Input to latch in

the digital address (ADDR2–0) on the

rising edge of the multiplexer.

23

ADDR0

Address input 0 to multiplexer. Digital

input for selecting analog input.

24

ADDR1

Address input 1 to multiplexer. Digital

input for selecting analog input.

25

ADDR2

Address input 2 to multiplexer. Digital

input for selecting analog input.

26

IN0

Analog input 0.

27

IN1

Analog input 1.

28

IN2

Analog input 2.

ADDR0

ADDR1

ADDR2

ALE

DB7

DB6

DB5

IN7

START

EOC

DB3

OE

CLK

VCC

12

13 14

15

16

17

18

5

6

7

8

9

10

11

43

2

1

28

25

24

23

22

21

20

19

27

26

TOP VIEW

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