M52957AFP

Rev.1.0, Sep.19.2003, page 8 of 13

Application Example

CINT

GND1

CHN

SOUT

PVcc

IRED

PSDN

PSD

RECKON

BIAS

NC

TESTF

CHF

CLALV

HOLD

INT

9

10

MICROCOMPUTER

Vcc

GND2

16

15

PSDF

1.0µF

2

3

14

12

11

8

13

4

6

STB

5

RESET

7

1

1.0µF

TESTN

NC

STATIONARY

LIGHT

REMOVE

PULSE WIDTH

TRANSFORM

(DOUBLE INTEGRATION)

SEQUENTIAL CONTROL LOGIC

CLAMP

CIRCUIT

I/V

TRANSFORM

AMP

STATIONARY

LIGHT

REMOVE

I/V

TRANSFORM

AMP

HOLD

HOLD

I1

I2

CLAMP LEVEL

SWITCHING

HOLD

REFERENCE

VOLTAGE

I1+I2

I1

Controls

(1) STB

This terminal enables IC to operate. IC is Standby at HIGH in this terminal. IC can operate at LOW in this terminal.

(2) RESET

This terminal resets the whole IC including a logic. This terminal resets IC at HIGH.

This terminal cancel resetting IC at the edge from HIGH to LOW.

IC includes power on reset function. The control from external is also possible.

The reset term in IC takes OR between power on reset and control signal from external.

H

L

Indefiniteness

Reset

Reset canceled

While this terminal is HIGH,dielectric divide pole countermeasures circuit of

integration condenser is active.