No. 5428-5/6

LC89086M

Pin Functions

Pin No.

Pin name

I/O

Function

Digital output enable input

1

OEB

I

High: high-impedance

Low: Normal operation

2

Digital ground

3

Analog ground

4

Vref HO

O

Internal reference voltage (high) generation. Shorting this pin to VrefH (pin 5) generates a voltage of 2.0 V.

This pin must be left open when the internally generated potential is not used.

5

Vref H

I

Reference voltage input (high)

6

AIN

I

Analog input

7

Vref M

O

Reference voltage intermediate level tap.

8

Vref L

I

Reference voltage input (low)

9

Vref LO

O

Internal reference voltage (low) generation. Shorting this pin to VrefL (pin 8) generates a voltage of 0 V.

This pin must be left open when the internally generated potential is not used.

10

Analog power supply

11

Analog ground

12

Digital ground

13

Digital power supply

14

D8

O

Digital output (LSB)

15

D7

O

Digital output

16

D6

O

Digital output

17

D5

O

Digital output

18

D4

O

Digital output

19

D3

O

Digital output

20

D2

O

Digital output

21

D1

O

Digital output (MSB)

22

OF

O

Digital output (Overflow)

23

CLK

I

Clock input

24

Digital power supply

I/O Code Table

The table below lists the relationship between the input and output when VrefH and VrefL are set up so that the zero

transient voltage is 0.000 V and the full-scale transient voltage is 2.008V.

Analog input

Digital output

OF

D1

D2

D3

D4

D5

D6

D7

D8

Up to 0.000

0

0

0

0

0

0

0

0

0

Up to 0.008

0

0

0

0

0

0

0

0

0

Up to 0.016

0

0

0

0

0

0

0

0

1

Up to 0.024

0

0

0

0

0

0

0

1

0

Up to 0.032

0

0

0

0

0

0

0

1

1

to

Up to 0.992

0

0

1

1

1

1

1

1

0

Up to 1.000

0

0

1

1

1

1

1

1

1

Up to 1.008

0

1

0

0

0

0

0

0

0

Up to 1.016

0

1

0

0

0

0

0

0

1

to

Up to 1.992

0

1

1

1

1

1

1

0

1

Up to 2.000

0

1

1

1

1

1

1

1

0

Up to 2.008

0

1

1

1

1

1

1

1

1

Over 2.008

1

1

1

1

1

1

1

1

1