3

MB40C218

s DESCRIPTION OF PINS

The values in parentheses are standard.

s PRECAUTIONS ON USE

Place the high-frequency capacitor as close as possible to the pin.

You can minimize the power supply current dissipation due to the internal logic indetermination by making CE

to high on power turning on.

Pin No.

Symbol

Description

26

Analog section power supply (+ 5.00 V)

21

A/D converter analog power supply (+ 3 V)

17

A/D converter digital power supply (+ 3 V)

2, 3, 7, 28, 31

Analog power supply ground pin (0 V)

Digital power supply ground pin (0 V)

9 to 16

Digital output pin

18

CLK

Clock input pin

29

ADIN

A/D converter analog input pin.

Relationship between analog input and digital output is defined by Test function.

23

22

Reference voltage output pin on top side.

Reference voltage input pin on bottom side (0V)

25

Input pin 1 for 1:3 gain amp

Dual input selector for inverting amp

27

Input pin 2 for 1:3 gain amp

30

OPO

Input pin for 1:3 gain (at standby: high impedance)

4SEL

Toggle input pin for dual input selector for 1:3 gain amp

Test function

5CE

Input pin for toggling standby function.

Input high signal brings the standby state to the A/D

converter, 1:3 gain amp, and reference voltage adjustment

amp.

32

OE

Input low signal readies digital output.

Input high signal induces high-impedance state.

19

TEST

Test input pin.

6, 20, 24

N.C.

No connection pins