ML2252, ML2259

3

Pin Number

ML2252

ML2259

Name

Function

1

CH3

Analog input 3.

2

CH4

Analog input 4.

3

CH5

Analog input 5.

4

CH6

Analog input 6.

5

CH7

Analog input 7.

2

6

START

Start of conversion. Active high digital input pulse initiates conversion.

3

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.

4

8

DB3

Data output 3.

5

9

OE

Output enable input. When OE = 0, DB0–DB7 are in high impedance state;

OE = 1, DB0–DB7 are active outputs.

6

10

CLK

Clock. Clock input provides timing for A/D converter, S/H, and digital

interface.

711

Positive supply. 5V ±10%.

812

Positive reference voltage.

9

13

GND

Ground. 0V, all analog and digital inputs or outputs are referenced to this

point.

10

14

DB1

Data output 1.

11

15

DB2

Data output 2.

12

16

Negative reference voltage.

13

17

DB0

Data output 0.

14

18

DB4

Data output 4.

15

19

DB5

Data output 5.

16

20

DB6

Data output 6.

17

21

DB7

Data output 7.

18

22

ALE

Address latch enable. Input to latch in the digital address (ADDR2-0) on the

rising edge of the multiplexer.

23

ADDR2

Address input 2 to multiplexer. Digital input for selecting analog input.

24

ADDR1

Address input 1 to multiplexer. Digital input for selecting analog input.

19

25

ADDR0

Address input 0 to multiplexer. Digital input for selecting analog input.

20

26

CH0

Analog input 0.

1

27

CH1

Analog input 1.

28

CH2

Analog input 2.

PIN DESCRIPTION