MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
DESCRIPTION
PIN CONFIGURATION (TOP VIEW)
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
PSDN
1
16 PSDF
CHN
2
15 CHF
14 GND1
doing calculation corresponds to I1/(I1+I2), and outputs it as the
3
4
STB
5
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
M52957FP
VCC
(TESTN)
NC
time data(pulse term).
13
(TESTF)
NC
12 GND2
11 CLALV
CINT
6
RESET
7
10 HOLD
SOUT
8
9 INT
Outline 16P2E-A
APPLICATION
Auto focus control for the CAMERA
Sensor for short distance
etc
NC:NO CONNECTION
RECOMMENDED OPERATING CONDITION
Supply voltage range......................................................2.2 to 5.5V
Rated supply voltage.................................................................3.0V
BLOCK DIAGRAM
Note: pin4,13 is connected only engineering sample
VCC
NC
CINT
3
4
6
TESTN
CHN
PULSE WIDTH
TRANSFORM
2
I1
PSDN
1
(DOUBLE INTEGRATION)
I/V
STATIONARY
LIGHT
REMOVE
BIAS
TRANSFORM
AMP
RECKON
I1
I1+I2
HOLD
HOLD
REFERENCE
VOLTAGE
I2
I/V
PSDF 16
STATIONARY
LIGHT
REMOVE
TRANSFORM
13 NC
HOLD
AMP
CLAMP LEVEL
SWITCHING
CHF 15
1
CLANP
CIRCUIT
TESTF
SEQUENTIAL CONTROL LOGIC
14
12
11
5
7
9
10
8
GND1
GND2
CLALV
STB
RESET
INT
HOLD
SOUT
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
ABSOLUTE MAXIMUM RATINGS (Ta=25˚C,unless otherwise noted)
Symbol
VCC
Pd
K
VIF
VI/O
Isout
Topr
Tstg
Parameter
Supply voltage
Power dissipation
Thermal derating
Pin supply voltage
Another pin supply voltage
Output pin inflow current
Operating temperature
Storage temperature
Vsurge
Ratings
7.0
320
-3.2
Unit
V
mW
mW/ ˚C
Remark
note 1
Ta=25˚C
Ta ≥ 25˚C
7.0
-0.3 to VCC+0.3
0.5
-10 to 50
-40 to 125
V
V
mA
˚C
˚C
Pin5,7,8,9,10,11
note 2
NPN open collector
C=200PF
R=0Ω
±200V over
Surge voltage
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
Symbol
Classification
ICC1
ICC3
Consuming
current
ICC4
VHOH
VHOL
IHOH
IHOL
VINH
VINL
IINH
IINL
VCLH
VCLL
ICLH
ICLL
VREH
VREL
IREH
IREL
HOLD pin
INT pin
CLALV pin
RESET pin
VSTH
VSTL
ISTH
ISTL
ICHQC
ICHC
ICHD
Parameter
Test conditions
Operating supply
voltage range
Usual consuming current
VCC
ICC2
(Ta=25˚C,Vcc=3.0V, unless otherwise noted)
While Rapid charge
consuming current 1
While Rapid charge
consuming current 2
While STAND BY consuming current
HOLD "H" input voltage
HOLD "L" input voltage
HOLD "H" input current
HOLD "L" input current
INT "H" input voltage
INT "L" input voltage
INT "H" input current
INT "L" input current
CLALV "H" input voltage
CLALV "L" input voltage
CLALV "H" input current
CLALV "L" input current
RESET "H" input voltage
RESET "L" input voltage
RESET "H" input current
RESET "L" input current
While CH rapid charge
consuming current
While CH and CINT rapid charge
consuming current
VIH=5.5V
VIL=0V
VIH=5.5V
VIL=0V
VIH=5.5V
VIL=0V
VIH=5.5V
VIL=0V
STB "H" input voltage
STB pin
HOLD C
STB "L" input voltage
STB "H" input current
STB "L" input current
CH rapid charge current
CH stationary charge current
CH stationary discharge current
VIH=5.5V
VIL=0V
IPSD=5 µA,
VCH=0V
VCH=0V
V CH=1.5V
Min.
Limits
Typ. Max.
Unit
2.2
3.0
5.5
V
-
5.9
7.7
mA
-
17.7
23.0
mA
-
19.0
24.7
mA
-
-
1.0
µA
1.1
-0.3
-
-
7.0
0.3
1.0
V
V
µA
-100 -75
-50
1.1
7.0
-0.3
0.3
1.0
-100 -75
-50
1.1
7.0
-0.3
0.3
1.0
-100 -75
-50
1.1
7.0
-0.3
0.3
1.0
-100 -75
-50
VCC
7.0
-0.3
-0.3
0.3
3.0
-150 -100 -50
-2000 -1000 -500
-30
-20
-10
10
20
30
µA
V
V
µA
µA
V
V
µA
µA
V
V
µA
µA
V
V
µA
µA
µA
µA
µA
2
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
ELECTRICAL CHARACTERISTICS (cont.)
Symbol
Classification
ICINTC
VCINT
ICI1
ICI2
∆ICI1
Double
integration
∆ICI2
ICI12
D(9:1)-1
D(6:4)-1
D(3:7)-1
∆AF-1
LAF-1
D(9:1)-2
D(6:4)-2
D(3:7)-2
∆AF-2
LAF-2
D(9:1)-3
D(6:4)-3
D(3:7)-3
∆AF-3
LAF-3
AF input
condition 1
AF input
condition 2
AF input
condition 3
∆D(9:1)
∆D(6:4)
AF input
condition
1 minus 2
ICLAM
3
Data
Sensor
Test conditions
Min.
Limits
Typ.
Max.
84
1.6
120
1.8
156
2.0
µA
V
4.2
-3.31
6.0
-2.54
7.8
-1.77
µA
µA
-
-
10
%
-
-
10
%
2.12
2.36
2.60
Unit
CINT rapid charge current
CINT reference voltage
The first integration current
The second integration current
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
VCI=1V(CINT stable period)
GND criterion
Near side 9 : Far side 1
11.78
13.40
15.02
msec
AF output time(6:4)-1
AF output time(3:7)-1
AF slope -1
AF linearity-1
AF output time(9:1)-2
Near side 6 : Far side 4
Near side 3 : Far side 7
7.77
3.77
6.57
0.9
11.78
8.95
4.51
8.89
1.0
13.40
10.13
5.25
11.21
1.1
15.02
msec
msec
msec
7.77
3.77
6.57
0.9
11.78
8.95
4.51
8.89
1.0
13.40
10.13
5.25
11.21
1.1
15.02
7.77
3.77
6.57
0.9
8.95
4.51
8.89
1.0
10.13
5.25
11.21
1.1
msec
msec
msec
-
-
280
µsec
-
-
280
µsec
-
-
280
µsec
3.0
-
-
1.0
0.3
30
µA
V
µA
µA
-30
-
30
%
AF output time(6:4)-2
AF output time(3:7)-2
AF slope -2
AF linearity-2
AF output time(9:1)-3
VCINT=1.5V
VCHF=2V, VCHN=0V
ICI1 / ICI2
Near side 9 : Far side1
Near side 6 : Far side4
Near side 3 : Far side7
Near side 9 : Far side1
AF output time(6:4)-3
AF output time(3:7)-3
AF slope -3
AF linearity-3
Near side 6 : Far side 4
Near side 3 : Far side 7
∆AF output time(9:1)
Near side 9 : Far side1
(Consition 1-2)
∆AF output time(6:4)
Near side 6 : Far side4
(Consition 1-2)
Near side 3 : Far side7
(Consition 1-2)
VIN=5.5V
IOUT=500µA
∆AF output time(3:7)
∆D(3:7)
ISOUTL
VSOUTS
∆INF
IPSD
Parameter
SOUT leak current
SOUT saturation voltage
Signal light saturation current
Stationary light remove current
Clamp level
Change quantity for Typ.
current
msec
msec
msec
msec
msec
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
ICC2, ICC3, ICC4, ICHQC, ICHC, ICHD, ICINTC, VCINT, ICI1, ICI2
SOUT output at that time,obtain AF slope and AF linearity from the
Set up the logic control terminal, correspond to the parameter.
equations below.
∆ICI1, ∆ICI2
Input condition1 : IPSD(Stationary light current)=0
I1+I2=100nA
Change ratio between the first integration current and the second
Input condition2 : IPSD(Stationary light current)=0
I1+I2=50nA
integration current at a voltage of CINT that is
Input condition3 : IPSD(Stationary light current)=10 µA I1+I2=100nA
{CINT reference voltage(VCINT) to 0.1V} and 1V.
∆ICI1=(1-
The first integration current (CINT=1V)
D(9 : 1)....The pulse width of SOUT output at input with I1:I2=9:1
) X 100%
D(6 : 4)....The pulse width of SOUT output at input with I1:I2=6:4
The first integration current (CINT=VCINT to 0.1V)
D(3 : 7)....The pulse width of SOUT output at input with I1:I2=3:7
The second integration current (CINT=1V)
∆ICI2=(1-
) X 100%
AF slope : ∆AF=D(9 : 1) - D(3 : 7)
The second integration current (CINT=VCINT to 0.1V)
AF linearity : L(AF)=(D(9 : 1) - D(6 : 4))/(D(6 : 4) - D(3 : 7))
D(9 :1)-1, D(6 : 4)-1, D(3 : 7)-1, ∆AF-1, LAF-1, D(9 :1)-2, D(6 : 4)-2,
PSD quite resistance : 120kΩ
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
∆INF, IPSD
current output from photo coupler correspond to the parameter. And
The input current of one side channel when stationary light remove
input the varied resistance ratio. And measure the pulse width of
circuit and I/V transform AMP is not saturated.
APPLICATION EXAMPLE
0.056µF
VCC
NC
3
CINT
4
CHN
6
TESTN
2
11
1.0µF
1
PSDN
PULSE WIDTH
TRANSFORM
(DOUBLE INTEGRATION)
STATIONARY
LIGHT
REMOVE
BIAS
I/V
TRANSFORM
AMP
RECKON
I1
I1+I2
HOLD
HOLD
PSD
REFERENCE
VOLTAGE
12
PSDF
16
STATIONARY
LIGHT
REMOVE
I/V
TRANSFORM
AMP
CLAMP
CIRCUIT
13 NC
HOLD
CHF
CLAMP LEVEL
SWITCHING
15
1.0µF
TESTF
SEQUENTIAL CONTROL LOGIC
PVCC
GND1
14
12
11
GND2
CLALV
5
STB
7
RESET
9
10
INT HOLD
8
SOUT
IRED
MICROCOMPUTER
4
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
CONTROLS
(3) CLALV
(1) STB
This terminal sets up clamp level.
This terminal enables IC to operate. IC is Standby at HIGH in
As including D/A of 4bit,16way clamp level setting is possible by
this terminal. IC can operate at LOW in this terminal.
inputting clock after reset is canceled(include none clamp).
(2) RESET
This terminal resets the whole IC including a logic. This terminal
Set up current value of each bit is on the right table.
resets IC at HIGH. This terminal cancel resetting IC at the edge
The number of input clock and set up clamp level is as follows.
from HIGH to LOW. IC includes power on reset function. The
Bit
Set up current (Typ.)
control from external is also possible. The reset term in IC
1
0.125 nA
takes OR between power on reset and control signal from
2
o.25 nA
external.
3
0.5 nA
4
1.0 nA
H
L
Indefiniteness
While
this
Reset
terminal
Reset canceled
is
HIGH,dielectric
divide
countermeasures circuit of integration condenser is active.
pole
Clock
value
Clamp
level(Typ.)
Clock
value
Clamp
level(Typ.)
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 is established with fall edge of input clock.
It repeats the same value after 16 clock.
5
MITSUBISHI ICs (AV COMMON)
M52957FP
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
Stationary light hold
HOLD
The first
integration
The second
integration
CINT
rapid charge
INT
CH
rapid charge
Reset canceled
a. CINT rapid charge
(5) SOUT
After reset is canceled, the capacity of C INT is charged rapidly
When the second integration starts,This terminal becomes from
until INT terminal first falls.
HIGH to LOW. If CINT terminal exceeds judge level or INT
terminal becomes from HIGH to LOW, this terminal becomes
b. CH rapid charge
from LOW to HIGH.
After reset is canceled, the capacity of CH is charged rapidly
until INT terminal first rises and falls.
(notice) As the signal from microcomputer,the signal that controls
IRED ON/OFF is required except for above mentioned
c. Stationary light hold
After reset is canceled, holds the stationary light while HOLD
control signals. But applying the timing of HOLD is
available.
terminal is HIGH.
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
7
STB
VCC
CINT pin
pin
TESTN
(F)
The second integration
The first integration
Stationary light hold
CH rapid charge
CINT rapid charge
IC control content
SOUT
Output signal
INT
IRED
HOLD
CLALV
RESET
Input signal
Reset period
100µsec
25msec
Movement period
ofCINT dielectric
dividepole
measures circuit
10µsec
10µsec
25msec
10µsec
sec
100µ
min500uS
555µX128times
71msec
Stationary light hold,the first integrationX128times
Measurement
circuit stable
period
50µsec
1msec
CH rapid
charge period
50µsec
MIN5µsec
16msec
The second
integration
1m
sec
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
SEQUENTIAL TIME CHART EXAMPLE
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
MASK OPTION
(1) The second integration current value can be doubled.
(2.5µ
5.0µA)
0.125nA
0.25nA
0.5nA
1.0nA
(2) Control terminal variation
1
Full spec (typical)
C
L
A
L
V
S
T
B
R
E
S
E
T
I
N
T
H
O
L
D
S
O
U
T
11
5
7
9
10
8
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.
MICROCOMPUTER
(c) RESET
This type uses CLALV, STB, RESET, INT, HOLD, SOUT terminal as
Since IC include power on reset circuit,RESET terminal can be
I/F terminal to the microcomputer.
eliminated. As merit of controlling RESET terminal from
This is the typical type at M52957FP.
outside,distance detection time can be shortened because
there is no need to switch VCC or STB Terminal ON /OFF at
2
consecutive distance detection.
Most simplified type
I
N
T
H
O
L
D
S
O
U
T
9
10
8
MICROCOMPUTER
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 levels can be set by 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
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
DESCRIPTION OF PIN
Name
HOLD
INT
CLALV
Peripheral circuit of pins
Min.
Limits
Typ.
Max.
"H" input
voltage
1.1
-
7.0
"L" input
voltage
-
-
0.3
"H" input
current
-
-
1.0
Parameter
Unit
Test conditions
and note
V
RESET
VIH=5.5V
µA
"L" input
current
-100
-75
-50
"H" input
voltage
VCC
-0.3
-
7.0
VIL=0V
V
STB
"H" input
voltage
-
-
0.3
"H" input
current
-
-
3.0
VIH=5.5V
µA
"L" input
current
-150
-100
-50
"L" output
voltage
-
-
0.3
V
IOL=500µA
"H" leak
current
-
-
1.0
µA
VIN=5.5V
VIL=0V
SOUT
9