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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).
PSDN CHN VCC
(TESTN) NC
PIN CONFIGURATION (TOP VIEW)
1 2 3
16 PSDF 15 CHF 14 GND1
M52957FP
4 5 6 7 8
13
(TESTF) NC
FEATURES
STB CINT RESET SOUT
12 GND2 11 CLALV 10 HOLD 9 INT
* * * *
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
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 3 TESTN CHN 2 I1 PSDN 1 STATIONARY LIGHT REMOVE I/V TRANSFORM AMP
NC 4
CINT 6
PULSE WIDTH TRANSFORM (DOUBLE INTEGRATION) BIAS
RECKON I1 I1+I2 REFERENCE VOLTAGE
HOLD HOLD I2 I/V PSDF 16 STATIONARY LIGHT REMOVE TRANSFORM AMP CLAMP LEVEL SWITCHING CLANP CIRCUIT
13 NC HOLD TESTF
CHF 15
SEQUENTIAL CONTROL LOGIC
14 GND1
12 GND2
11 CLALV
5 STB
7 RESET
9 INT
10 HOLD
8 SOUT
1
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE ABSOLUTE MAXIMUM RATINGS (Ta=25C,unless otherwise noted)
Symbol VCC Pd K VIF VI/O Isout Topr Tstg Vsurge Parameter Supply voltage Power dissipation Thermal derating Pin supply voltage Another pin supply voltage Output pin inflow current Operating temperature Storage temperature Surge voltage Ratings 7.0 320 -3.2 7.0 -0.3 to VCC+0.3 0.5 -10 to 50 -40 to 125 200V over Unit V mW mW/ C V V mA C C Remark note 1 Ta=25C Ta 25C Pin5,7,8,9,10,11 note 2 NPN open collector
C=200PF R=0
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 VCC ICC1 ICC2 ICC3 ICC4 VHOH VHOL IHOH IHOL VINH VINL IINH IINL VCLH VCLL ICLH ICLL VREH VREL IREH IREL VSTH VSTL ISTH ISTL ICHQC ICHC ICHD STB pin HOLD pin Consuming current Classification
(Ta=25C,Vcc=3.0V, unless otherwise noted) Parameter Test conditions Limits Typ. Max. 3.0 5.9 17.7 19.0 5.5 7.7 23.0 24.7 1.0 7.0 0.3 1.0 Unit V mA mA mA A V V A A V
V
Min. 2.2 -
Operating supply voltage range Usual consuming current 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 STB "H" input voltage STB "L" input voltage STB "H" input current STB "L" input current CH rapid charge current CH stationary charge current CH stationary discharge current While CH rapid charge consuming current While CH and CINT rapid charge consuming current
1.1 -0.3 -
VIH=5.5V VIL=0V
INT pin
VIH=5.5V VIL=0V
CLALV pin
VIH=5.5V VIL=0V
RESET pin
VIH=5.5V VIL=0V
VIH=5.5V VIL=0V IPSD=5 A,
HOLD C
VCH=0V VCH=0V V CH=1.5V
-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
A A V V A A V
V
A A V V A A A A A
2
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE ELECTRICAL CHARACTERISTICS (cont.)
Symbol ICINTC VCINT ICI1 ICI2 ICI1 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 D(9:1) D(6:4) D(3:7) ISOUTL VSOUTS INF IPSD ICLAM Data Sensor AF input condition 1 minus 2 AF input condition 1 Double integration Classification Parameter 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 AF output time(6:4)-1 AF output time(3:7)-1 AF slope -1 AF linearity-1 AF output time(9:1)-2 AF output time(6:4)-2 AF output time(3:7)-2 AF slope -2 AF linearity-2 AF output time(9:1)-3 AF output time(6:4)-3 AF output time(3:7)-3 AF slope -3 AF linearity-3 AF output time(9:1) AF output time(6:4) AF output time(3:7) SOUT leak current SOUT saturation voltage Signal light saturation current Stationary light remove current Clamp level Test conditions VCI=1V(CINT stable period) GND criterion VCINT=1.5V VCHF=2V, VCHN=0V Min. 84 1.6 4.2 -3.31 ICI1 / ICI2 Near side 9 : Far side 1 Near side 6 : Far side 4 Near side 3 : Far side 7 2.12 11.78 7.77 3.77 6.57 0.9 11.78 7.77 3.77 6.57 0.9 11.78 7.77 3.77 6.57 0.9 3.0 -30 Limits Typ. 120 1.8 6.0 -2.54 2.36 13.40 8.95 4.51 8.89 1.0 13.40 8.95 4.51 8.89 1.0 13.40 8.95 4.51 8.89 1.0 Max. 156 2.0 7.8 -1.77 10 10 2.60 15.02 10.13 5.25 11.21 1.1 15.02 10.13 5.25 11.21 1.1 15.02 10.13 5.25 11.21 1.1 280 280 280 1.0 0.3 30 30 msec msec msec msec msec msec msec msec msec msec msec msec sec sec sec A V A A % Unit A V A A % %
Near side 9 : Far side1 Near side 6 : Far side4 Near side 3 : Far side7
AF input condition 2
Near side 9 : Far side1 Near side 6 : Far side 4 Near side 3 : Far side 7
AF input condition 3
Near side 9 : Far side1 (Consition 1-2) Near side 6 : Far side4 (Consition 1-2) Near side 3 : Far side7 (Consition 1-2) VIN=5.5V IOUT=500A
Change quantity for Typ. current
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.
ICI1=(1The first integration current (CINT=1V) The first integration current (CINT=VCINT to 0.1V)
SOUT output at that time,obtain AF slope and AF linearity from the equations below. Input condition1 : IPSD(Stationary light current)=0 Input condition2 : IPSD(Stationary light current)=0 I1+I2=100nA I1+I2=50nA
Input condition3 : IPSD(Stationary light current)=10 A I1+I2=100nA 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 D(3 : 7)....The pulse width of SOUT output at input with I1:I2=3:7
ICI2=(1-
The second integration current (CINT=1V) The second integration current (CINT=VCINT to 0.1V)
) X 100%
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 : 120k INF, IPSD The input current of one side channel when stationary light remove circuit and I/V transform AMP is not saturated.
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 Connect the resistance of 120k 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
0.056F VCC 3 CHN 2 1.0F 1 PSDN STATIONARY LIGHT REMOVE HOLD HOLD PSD PSDF 16 CHF 15 1.0F CLAMP LEVEL SWITCHING 12 STATIONARY LIGHT REMOVE I/V TRANSFORM AMP CLAMP CIRCUIT HOLD TESTF 13 NC 11 I/V TRANSFORM AMP TESTN NC 4 CINT 6
PULSE WIDTH TRANSFORM (DOUBLE INTEGRATION) BIAS RECKON I1 I1+I2
REFERENCE VOLTAGE
SEQUENTIAL CONTROL LOGIC PVCC
GND1
14
12
GND2 CLALV
11 STB
5
7 RESET
9
10
8 SOUT
INT HOLD
IRED MICROCOMPUTER
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
(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 1 2 3 4 Set up current (Typ.) 0.125 nA o.25 nA 0.5 nA 1.0 nA
Clock value 0 pole 1 2 3 4 5 6 7 8 9 10 11
Clamp level(Typ.) None clamp 0.125 nA 0.250 nA 0.375 nA 0.500 nA 0.625 nA 0.750 nA 0.875 nA 1.000 nA 1.125 nA 1.250 nA 1.375 nA
Clock value 12 13 14 15 16 17 18 19 20
Clamp level(Typ.) 1.500 nA 1.625 nA 1.750 nA 1.875 nA None clamp 0.125 nA 0.250 nA 0.375 nA 0.500 nA
While
this
terminal
is
HIGH,dielectric
divide
countermeasures circuit of integration condenser is active.
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 CINT rapid charge INT CH rapid charge Reset canceled The second integration
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. 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.
(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.
6
7
MIN5sec
Input signal
VCC
STB
10sec
RESET
CLALV
50sec
50sec
HOLD
min500uS
IRED
INT
Output signal
SEQUENTIAL TIME CHART EXAMPLE
SOUT
IC control content
CINT rapid charge
CH rapid charge
Stationary light hold
The first integration
The second integration
TESTN (F)
pin
Reset period
CINT pin
CH rapid charge period
Measurement circuit stable period
Stationary light hold,the first integrationX128times
Movement period ofCINT dielectric dividepole measures circuit
The second integration
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
25msec
100
10sec
25msec
100sec
sec
10sec
1msec
555X128times
71msec
16msec
1m sec
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE MASK OPTION
(1) The second integration current value can be doubled. (2.5 5.0A)
0.125nA 0.25nA 0.5nA 1.0nA
(2) Control terminal variation
1
Full spec (typical)
C L A L V 11
S T B 5
R E S E T 7
I N T 9
H O L D 10
S O U T 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 VCC 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.
MICROCOMPUTER
This type uses CLALV, STB, RESET, INT, HOLD, SOUT terminal as I/F terminal to the microcomputer. This is the typical type at M52957FP. Most simplified type
2
I N T 9
H O L D 10
S O U T 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. Explanation of the terminal that can be simplified. 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.
3
(a) CLALV
8
MITSUBISHI ICs (AV COMMON)
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE DESCRIPTION OF PIN
Name Peripheral circuit of pins Parameter "H" input voltage HOLD INT CLALV RESET "L" input current "H" input voltage "H" input voltage STB "H" input current "L" input current -100 -75 -50 "L" input voltage "H" input current Min. 1.1 Limits Typ. Max. 7.0 V 0.3 Unit Test conditions and note
-
-
1.0 A
VIH=5.5V
VIL=0V
VCC -0.3 -
-
7.0 V
-
0.3
-
-
3.0 A
VIH=5.5V
-150
-100
-50
VIL=0V
"L" output voltage SOUT "H" leak current
-
-
0.3
V
IOL=500A
-
-
1.0
A
VIN=5.5V
9

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