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