Datasheet M52957FP Datasheet (Mitsubishi)

Outline 16P2E-A

16

13

14

15

1

4

3

2

12

5

11

6
7
8

10

9

M52957FP

PSDN

CHN

V

CC

(TESTN)

NC

STB

CINT

RESET

SOUT

PSDF
CHF
GND1

(TESTF)
NC

GND2
CLALV
HOLD
INT

MITSUBISHI ICs (AV COMMON)

M52957FP

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

DESCRIPTION

M52957FP is a semiconductor integrated circuit containing
distance detection signal processing circuit for 3V supply voltage.
This device transforms each optical inflow current I1 and I2 from
PSD SENSOR into the voltage, and integrates that output after
doing calculation corresponds to I1/(I1+I2), and outputs it as the
time data(pulse term).

FEATURES

Wide supply voltage range Vcc=2.2 to 5.5V

•

Includes clamp level switching circuit

•

(Switch is 16 kinds by outside control)

Includes standby function

•

Includes power on RESET function

•

APPLICATION

Auto focus control for the CAMERA
Sensor for short distance etc

RECOMMENDED OPERATING CONDITION

Supply voltage range......................................................2.2 to 5.5V

Rated supply voltage.................................................................3.0V

PIN CONFIGURATION

(TOP VIEW)

NC:NO CONNECTION

BLOCK DIAGRAM

CHN

2

1

PSDN

PSDF

CHF

16

15

VCC

3 4

TESTN

1

STATIONARY
LIGHT
REMOVE

HOLD
HOLD

STATIONARY
LIGHT
REMOVE

14

GND1

I

I2

12

GND2

I/V

TRANSFORM

AMP

I/V

TRANSFORM

AMP

Note: pin4,13 is connected only engineering sample

NC

CLANP
CIRCUIT

CLAMP LEVEL
SWITCHING

11

CLALV STB RESET INT HOLD SOUT

CINT

6

PULSE WIDTH
TRANSFORM

(DOUBLE INTEGRATION)

RECKON

I1

I1+I2

HOLD

SEQUENTIAL CONTROL LOGIC

5

7

9

BIAS

REFERENCE
VOLTAGE

10

TESTF

13

NC

8

1

≥

±

MITSUBISHI ICs (AV COMMON)

M52957FP

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

ABSOLUTE MAXIMUM RATINGS

(Ta=25˚C,unless otherwise noted)

Symbol Parameter Ratings Unit Remark

V

CC

Supply voltage 7.0 V note 1
Pd Power dissipation 320 mW Ta=25˚C
K
V

IF

V

I/O

I

sout

T

opr

T

stg

surge

V

Note 1. As a principle,do not provide a supply voltage reversely.

2. As a principle,do not provide the terminals with the voltage over supply voltage or under ground voltage.

ELECTRICAL CHARACTERISTICS

Thermal derating -3.2 mW/ ˚C

Ta 25˚C
Pin supply voltage 7.0 V Pin5,7,8,9,10,11
Another pin supply voltage -0.3 to V

+0.3 V note 2

CC

Output pin inflow current 0.5 mA NPN open collector
Operating temperature -10 to 50 ˚C
Storage temperature -40 to 125 ˚C

Surge voltage

200V over

C=200PF

R=0 Ω

(Ta=25˚C,Vcc=3.0V, unless otherwise noted)

Symbol Classification Parameter Test conditions

CC

V

CC1

I

CC2

I

CC3

I

CC4

I
V

HOH

V

HOL

I

HOH

I

HOL

V

INH

V

INL

I

INH

I

INL

V

CLH

V

CLL

I

CLH

I

CLL

V

REH

V

REL

I

REH

I

REL

V

STH

STL

V

STH

I

STL

I

CHQC

I

CHC

I

CHD

I

Consuming
current

HOLD pin

INT pin

CLALV pin

RESET pin

STB pin

HOLD C

Operating supply
voltage range

Usual consuming current - 5.9 7.7 mA
While Rapid charge

consuming current 1
While Rapid charge

consuming current 2

While CH rapid charge
consuming current

While CH and CINT rapid charge

consuming current
While STAND BY consuming current - - 1.0 µ A
HOLD "H" input voltage 1.1 - 7.0 V
HOLD "L" input voltage -0.3 - 0.3 V
HOLD "H" input current V
HOLD "L" input current V

=5.5V - - 1.0 µ A

IH

=0V -100 -75 -50 µ A

IL

INT "H" input voltage 1.1 - 7.0 V
INT "L" input voltage -0.3 - 0.3
INT "H" input current V
INT "L" input current V

=5.5V - - 1.0 µ A

IH

=0V -100 -75 -50 µ A

IL

CLALV "H" input voltage 1.1 - 7.0 V
CLALV "L" input voltage -0.3 - 0.3 V
CLALV "H" input current V
CLALV "L" input current V

=5.5V - - 1.0 µ A

IH

=0V -100 -75 -50 µ A

IL

RESET "H" input voltage 1.1 - 7.0 V
RESET "L" input voltage -0.3 - 0.3
RESET "H" input current V
RESET "L" input current V

=5.5V - - 1.0 µ A

IH

=0V -100 -75 -50 µ A

IL

STB "H" input voltage
STB "L" input voltage -0.3 - 0.3 V

STB "H" input current V
STB "L" input current V
CH rapid charge current IPSD=5 µ A,
CH stationary charge current
CH stationary discharge current V

IH

=5.5V - - 3.0 µ A

IL

=0V -150 -100 -50 µ A

CH

V

=0V -2000 -1000 -500 µ A

CH

V

=0V -30 -20 -10 µ A

CH

=1.5V 10 20 30 µ A

Limits

Min. Typ. Max.

2.2 3.0 5.5 V

- 17.7 23.0 mA

- 19.0 24.7 mA

V

CC

-0.3

- 7.0 V

Unit

V

V

2

∆

µ

MITSUBISHI ICs (AV COMMON)

M52957FP

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

∆

∆

∆

∆

∆

∆

∆

∆

ELECTRICAL CHARACTERISTICS

Symbol Classification Parameter Test conditions
I

CINTC

V

CINT

I

CI1
CI2

I

∆

I

CI1

I

CI2

∆

CI12

I

(9:1)-1

D
D

(6:4)-1
(3:7)-1

D

AF-1 AF slope -1 6.57 8.89 11.21 msec

Double
integration

AF input
condition 1

CINT rapid charge current V
CINT reference voltage GND criterion 1.6 1.8 2.0 V
The first integration current
The second integration current -3.31 -2.54 -1.77 µ A
The first integration

current stability percentage
The second integration

current stability percentage
The first and second

integration current ratio
AF output time(9:1)-1 Near side 9 : Far side 1 11.78 13.40 15.02 msec
AF output time(6:4)-1 Near side 6 : Far side 4 7.77 8.95 10.13 msec
AF output time(3:7)-1 Near side 3 : Far side 7 3.77 4.51 5.25 msec

(cont.)

Limits

Min. Typ. Max.

=1V(CINT stable period) 84 120 156 µ A

CI

V

V

I

CI1

CINT
CHF

=1.5V

=2V, V

/ I

CI2

CHN

=0V

4.2 6.0 7.8

- - 10 %

- - 10 %

2.12 2.36 2.60

LAF-1 AF linearity-1 0.9 1.0 1.1

(9:1)-2

D
D

(6:4)-2
(3:7)-2

D

AF-2 AF slope -2 6.57 8.89 11.21 msec

AF input
condition 2

AF output time(9:1)-2 Near side 9 : Far side1 11.78 13.40 15.02 msec
AF output time(6:4)-2 Near side 6 : Far side4 7.77 8.95 10.13 msec
AF output time(3:7)-2 Near side 3 : Far side7 3.77 4.51 5.25 msec

LAF-2 AF linearity-2 0.9 1.0 1.1

(9:1)-3

D
D

(6:4)-3
(3:7)-3

D

AF-3 AF slope -3 6.57 8.89 11.21 msec

AF input
condition 3

AF output time(9:1)-3 Near side 9 : Far side1 11.78 13.40 15.02 msec
AF output time(6:4)-3 Near side 6 : Far side 4 7.77 8.95 10.13 msec
AF output time(3:7)-3 Near side 3 : Far side 7 3.77 4.51 5.25 msec

LAF-3 AF linearity-3 0.9 1.0 1.1

D

(9:1)

AF output time(9:1)

AF input
condition

(6:4)

D

AF output time(6:4)

1 minus 2

(3:7)

D

SOUTL

I
VSOUTS SOUT saturation voltage IOUT=500µA - - 0.3 V
∆INF
IPSD Stationary light remove current - - 30 µA

CLAM

I

Data

Sensor

AF output time(3:7)

SOUT leak current V

Signal light saturation current 3.0 - - µA

Clamp level Change quantity for Typ.

Near side 9 : Far side1

(Consition 1-2)

Near side 6 : Far side4

(Consition 1-2)

Near side 3 : Far side7

(Consition 1-2)

IN

=5.5V - - 1.0 µA

current

- - 280 µ sec

- - 280 µ sec

- - 280 µ sec

-30 - 30 %

Unit

A

3

MITSUBISHI ICs (AV COMMON)

M52957FP

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

ICC2, ICC3, ICC4, ICHQC, ICHC, ICHD, ICINTC, VCINT, ICI1, ICI2

Set up the logic control terminal, correspond to the parameter.

∆ICI1, ∆ICI2

Change ratio between the first integration current and the second
integration current at a voltage of CINT that is
{CINT reference voltage(VCINT) to 0.1V} and 1V.

CI1=(1- ) X 100%

∆I

CI2=(1- ) X 100%

∆I

D

(9 :1)-1, D(6 : 4)-1, D(3 : 7)-1, ∆AF-1, LAF-1, D(9 :1)-2, D(6 : 4)-2,

The first integration current (CINT=1V)

The first integration current (C

The second integration current (C

The second integration current (C

INT=VCINT to 0.1V)

INT=1V)

INT=VCINT to 0.1V)

D(3 : 7)-2, ∆AF-2, LAF-2, D(9 :1)-3, D(6 : 4)-3, D(3 : 7)-3, ∆AF-3, LAF-3

Connect the resistance of 120kΩ instead of PSD and establish
current output from photo coupler correspond to the parameter. And
input the varied resistance ratio. And measure the pulse width of

APPLICATION EXAMPLE

OUT output at that time,obtain AF slope and AF linearity from the

S
equations below.

Input condition1 : IPSD(Stationary light current)=0 I1+I2=100nA
Input condition2 : IPSD(Stationary light current)=0 I1+I2=50nA
Input condition3 : IPSD(Stationary light current)=10 µA I1+I2=100nA

(9 : 1)....The pulse width of SOUT output at input with I1:I2=9:1

D

D(6 : 4)....The pulse width of SOUT output at input with I1:I2=6:4

D(3 : 7)....The pulse width of SOUT output at input with I1:I2=3:7

AF slope : ∆AF=D(9 : 1) - D(3 : 7)
AF linearity : L(AF)=(D(9 : 1) - D(6 : 4))/(D(6 : 4) - D(3 : 7))
PSD quite resistance : 120kΩ

∆INF, IPSD

The input current of one side channel when stationary light remove
circuit and I/V transform AMP is not saturated.

1.0µF

PSD

1.0µF

CHN

PSDN

PSDF

CHF

2

1

16

15

V

CC

3

STATIONARY
LIGHT
REMOVE

HOLD
HOLD

STATIONARY
LIGHT
REMOVE

14 12 11 5 7 9 10

11

I/V
TRANSFORM
AMP

12

I/V
TRANSFORM
AMP

GND2GND1

0.056µF

4 6

TESTN

CLAMP LEVEL
SWITCHING

CLALV STB RESET INT HOLD SOUT

CINTNC

PULSE WIDTH
TRANSFORM
(DOUBLE INTEGRATION)

RECKON
I1

I1+I2

CLAMP
CIRCUIT

HOLD TESTF

SEQUENTIAL CONTROL LOGIC

MICROCOMPUTER

REFERENCE
VOLTAGE

BIAS

NC

13

CC

PV

8

IRED

4

MITSUBISHI ICs (AV COMMON)

M52957FP

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

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.

(3) CLALV

This terminal sets up clamp level.
As including D/A of 4bit,16way clamp level setting is possible by
inputting clock after reset is canceled(include none clamp).

Set up current value of each bit is on the right table.
The number of input clock and set up clamp level is as follows.

Bit Set up current (Typ.)

1 0.125 nA
2 o.25 nA
3 0.5 nA
4 1.0 nA

Clock

value

0 None clamp 12 1.500 nA
1 0.125 nA 13 1.625 nA
2 0.250 nA 14 1.750 nA
3 0.375 nA 15 1.875 nA
4 0.500 nA 16 None clamp
5 0.625 nA 17 0.125 nA
6 0.750 nA 18 0.250 nA
7 0.875 nA 19 0.375 nA
8 1.000 nA 20 0.500 nA

9 1.125 nA
10 1.250 nA
11 1.375 nA

Clamp

level(Typ.)

Clock
value

Clamp

level(Typ.)

Clamp level is established with fall edge of input clock.
It repeats the same value after 16 clock.

5

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

(4) HOLD, INT

These terminals implement the following controls by inputting
HIGH/LOW.

a. CINT rapid charge ON, OFF
b. CH rapid charge ON, OFF
c. Stationary light hold ON, OFF
d. The first integration ON, OFF
e. The second integration ON, OFF

HOLD

MITSUBISHI ICs (AV COMMON)

M52957FP

Stationary light hold

INT

C

rapid charge

INT

Reset canceled

CH

rapid charge

a. CINT rapid charge

After reset is canceled, the capacity of CINT is charged rapidly
until INT terminal first falls.

b. CH rapid charge

After reset is canceled, the capacity of CH is charged rapidly
until INT terminal first rises and falls.

c. Stationary light hold

After reset is canceled, holds the stationary light while HOLD
terminal is HIGH.

The first
integration

The second
integration

(5) SOUT

When the second integration starts,This terminal becomes from
HIGH to LOW. If CINT terminal exceeds judge level or INT
terminal becomes from HIGH to LOW, this terminal becomes
from LOW to HIGH.

(notice) As the signal from microcomputer,the signal that controls

IRED ON/OFF is required except for above mentioned
control signals. But applying the timing of HOLD is
available.

d. The first integration

After reset is canceled, as HOLD terminal is HIGH and INT
terminal is HIGH, the first integration is implemented while INT
terminal is HIGH. Therefore,the first integration must be
finished(INT terminal from HIGH to LOW) until stationary light
hold will be completed (HOLD terminal from HIGH to LOW)

e. The second integration

After reset is canceled, the second integration is implemented as
HOLD terminal is LOW and INT terminal is HIGH. And,the
second integration is completed by exceeding judgement level of
CINT terminal although INT terminal is HIGH.

6

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

SEQUENTIAL TIME CHART EXAMPLE

MITSUBISHI ICs (AV COMMON)

M52957FP

The second

integration

1m

sec

16msec

10µsec

µsec

MIN5

50µsec

50µsec

min500uS

555µX128times 71msec

Stationary light hold,the first integrationX128times

Measurement

circuit stable

period

1msec

CH rapid

Reset period

Movement period

ofCINT dielectric

charge period

10µsec

dividepole

measures circuit

25msec

10µsec

100µ

sec

25msec

µsec

100

Input signal

7

(F)

VCC

STB

RESET

CLALV

HOLD

IRED

INT

Output signal

SOUT

IC control content

CINT rapid charge

CH rapid charge

The first integration

Stationary light hold

The second integration

pin

TESTN

CINT pin

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

1.0nA0.25nA 0.5nA0.125nA

MASK OPTION

(1) The second integration current value can be doubled.

(2.5µ 5.0µA)

(2) Control terminal variation

1

Full spec (typical)

MITSUBISHI ICs (AV COMMON)

M52957FP

C
L
A
L
V

11 5 7 9 10 8

S
T
B

R
E

I

S

N

E

T

T

MICROCOMPUTER

S

H

O

O

U

L

T

D

This type uses CLALV, STB, RESET, INT, HOLD, SOUT terminal as
I/F terminal to the microcomputer.
This is the typical type at M52957FP.

2

Most simplified type

S

H

O

O

I
N
T

9 10 8

MICROCOMPUTER

U

L

T

D

Fixes 3 parts of 4 switches correspond to each bit in figure to ON or
OFF,controls another part by CLALV terminal .

(b) STB

When no standby function required such as V

CC is switched ON/

OFF,STB terminal can be eliminated.

(c) RESET

Since IC include power on reset circuit,RESET terminal can be
eliminated. As merit of controlling RESET terminal from
outside,distance detection time can be shortened because
there is no need to switch VCC or STB Terminal ON /OFF at
consecutive distance detection.

This type does not connect CLALV, STB, RESET terminals to the
microcomputer.
When above mentioned terminals are not connected to the
microcomputer without changing mask,connect each terminal to
the ground. In this case,clamp level becomes 0 and standby
function is lost. Power on reset in IC is used as reset.

3

Explanation of the terminal that can be simplified.

(a) CLALV

In the typical type,16way clamp le v els can be set b y the external
control,but also the terminal can be simplified by mask option
as follows.

1. Clamp level fixation
Selects 1 point from 16 steps of clamp level and fixes it.

2. Clamp level 2 step changeover
Selects 2 points from clamp level and switches it by changing
CLALV terminal HIGH/LOW. However,as selecting 2 points,
there is a following constraint.

8

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

DESCRIPTION OF PIN

Name Peripheral circuit of pins Parameter

HOLD
INT
CLALV
RESET

"H" input

voltage

"L" input

voltage

"H" input

current

"L" input

current

MITSUBISHI ICs (AV COMMON)

M52957FP

Limits

Min. Typ. Max.

1.1 - 7.0

- - 0.3

- - 1.0

-100 -75 -50 V

Unit

V

µA

Test conditions

and note

V

IH=5.5V

IL=0V

STB

SOUT

"H" input

voltage

"H" input

voltage

"H" input

current

"L" input

current

"L" output

voltage

"H" leak

current

CC

V

-0.3

- - 0.3

- - 3.0

-150 -100 -50 V

- - 0.3 V I

- - 1.0 µAVIN=5.5V

- 7.0

µA

V

IH=5.5V

V

IL=0V

OL=500µA

9