M52957

M52957FP MITSUBISHI | Alldatasheet

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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).

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 BLOCK DIAGRAM PIN CONFIGURATION (TOP VIEW) 3 4 7 89 10 111214 VCC CHN PSDN I/V TRANSFORM AMP STATIONARY LIGHT REMOVE HOLD HOLD PSDF CHF STATIONARY LIGHT REMOVE GND1 GND2 CLAMP LEVEL SWITCHING I/V TRANSFORM AMP CLANP CIRCUIT SEQUENTIAL CONTROL LOGIC TESTN PULSE WIDTH TRANSFORM (DOUBLE INTEGRATION) RECKON I1+I2 BIAS REFERENCE VOLTAGE TESTF NC HOLD CLALV STB RESET INT HOLD SOUT NC CINT Note: pin4,13 is connected only engineering sample Outline 16P2E-A 125 116 M52957FP PSDN CHN VCC (TESTN) NC STB CINT RESET SOUT PSDF CHF GND1 (TESTF) NC GND2 CLALV HOLD INT NC:NO CONNECTION

MITSUBISHI ICs (AV COMMON) M52957FP DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE ABSOLUTE MAXIMUM RATINGS (Ta=25˚C,unless otherwise noted) 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

(Ta=25˚C,Vcc=3.0V, 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 Thermal derating -3.2 mW/ ˚C Ta 25˚C V IF Pin supply voltage 7.0 V Pin5,7,8,9,10,11 V I/O Another pin supply voltage -0.3 to V CC +0.3 V note 2 I sout Output pin inflow current 0.5 mA NPN open collector T opr Operating temperature -10 to 50 ˚C T stg Storage temperature -40 to 125 ˚C V surge Surge voltage 200V over C=200PF R=0 W Symbol Classification Parameter Test conditions Limits UnitMin. Typ. Max. V CC Operating supply voltage range 2.2 3.0 5.5 V I CC1 Consuming current Usual consuming current - 5.9 7.7 mA I CC2 While Rapid charge consuming current 1 While CH rapid charge consuming current - 17.7 23.0 mA I CC3 While Rapid charge consuming current 2 While CH and CINT rapid charge consuming current - 19.0 24.7 mA I CC4 While STAND BY consuming current - - 1.0 m A V HOH HOLD pin HOLD "H" input voltage 1.1 - 7.0 V V HOL HOLD "L" input voltage -0.3 - 0.3 V I HOH HOLD "H" input current V IH =5.5V - - 1.0 m A I HOL HOLD "L" input current V IL =0V -100 -75 -50 m A V INH INT pin INT "H" input voltage 1.1 - 7.0 V V INL INT "L" input voltage -0.3 - 0.3 V I INH INT "H" input current V IH =5.5V - - 1.0 m A I INL INT "L" input current V IL =0V -100 -75 -50 m A V CLH CLALV pin CLALV "H" input voltage 1.1 - 7.0 V V CLL CLALV "L" input voltage -0.3 - 0.3 V I CLH CLALV "H" input current V IH =5.5V - - 1.0 m A I CLL CLALV "L" input current V IL =0V -100 -75 -50 m A V REH RESET pin RESET "H" input voltage 1.1 - 7.0 V V REL RESET "L" input voltage -0.3 - 0.3 V I REH RESET "H" input current V IH =5.5V - - 1.0 m A I REL RESET "L" input current V IL =0V -100 -75 -50 m A V STH STB pin STB "H" input voltage V CC -0.3 - 7.0 V V STL STB "L" input voltage -0.3 - 0.3 V I STH STB "H" input current V IH =5.5V - - 3.0 m A I STL STB "L" input current V IL =0V -150 -100 -50 m A I CHQC HOLD C CH rapid charge current IPSD=5 m V CH =0V -2000 -1000 -500 m A I CHC CH stationary charge current V CH =0V -30 -20 -10 m A I CHD CH stationary discharge current V CH =1.5V 10 20 30 m A

MITSUBISHI ICs (AV COMMON) M52957FP DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE (cont.) Symbol Classification Parameter Test conditions Limits UnitMin. Typ. Max. I CINTC Double integration CINT rapid charge current V CI =1V(CINT stable period) 84 120 156 m A V CINT CINT reference voltage GND criterion 1.6 1.8 2.0 V I CI1 The first integration current V CINT =1.5V V CHF =2V, V CHN =0V 4.2 6.0 7.8 m A I CI2 The second integration current -3.31 -2.54 -1.77 m A D I CI1 The first integration current stability percentage - - 10 % D I CI2 The second integration current stability percentage - - 10 % I CI12 The first and second integration current ratio I CI1 / I CI2 2.12 2.36 2.60 D (9:1)-1 AF input condition 1 AF output time(9:1)-1 Near side 9 : Far side 1 11.78 13.40 15.02 msec D (6:4)-1 AF output time(6:4)-1 Near side 6 : Far side 4 7.77 8.95 10.13 msec D (3:7)-1 AF output time(3:7)-1 Near side 3 : Far side 7 3.77 4.51 5.25 msec D AF-1 AF slope -1 6.57 8.89 11.21 msec LAF-1 AF linearity-1 0.9 1.0 1.1 D (9:1)-2 AF input condition 2 AF output time(9:1)-2 Near side 9 : Far side1 11.78 13.40 15.02 msec D (6:4)-2 AF output time(6:4)-2 Near side 6 : Far side4 7.77 8.95 10.13 msec D (3:7)-2 AF output time(3:7)-2 Near side 3 : Far side7 3.77 4.51 5.25 msec D AF-2 AF slope -2 6.57 8.89 11.21 msec LAF-2 AF linearity-2 0.9 1.0 1.1 D (9:1)-3 AF input condition 3 AF output time(9:1)-3 Near side 9 : Far side1 11.78 13.40 15.02 msec D (6:4)-3 AF output time(6:4)-3 Near side 6 : Far side 4 7.77 8.95 10.13 msec D (3:7)-3 AF output time(3:7)-3 Near side 3 : Far side 7 3.77 4.51 5.25 msec D AF-3 AF slope -3 6.57 8.89 11.21 msec LAF-3 AF linearity-3 0.9 1.0 1.1 D D (9:1) AF input condition 1 minus 2 D AF output time(9:1) Near side 9 : Far side1 (Consition 1-2) - - 280 m sec D D (6:4) D AF output time(6:4) Near side 6 : Far side4 (Consition 1-2) - - 280 m sec D D (3:7) D AF output time(3:7) Near side 3 : Far side7 (Consition 1-2) - - 280 m sec I SOUTL Data SOUT leak current V IN=5.5V - - 1.0 mA VSOUTS SOUT saturation voltage I OUT =500mA - - 0.3 V DINF Sensor Signal light saturation current 3.0 - - mA IPSD Stationary light remove current - - 30 mA ICLAM Clamp level Change quantity for Typ. current -30 - 30 %

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. DICI1, DICI2 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. Connect the resistance of 120kW 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 S OUT output at that time,obtain AF slope and AF linearity from the 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 mA I1+I2=100nA D (9 : 1)....The pulse width of SOUT output at input with I1:I2=9:1 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 : DAF=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 : 120kW DINF, IPSD The input current of one side channel when stationary light remove circuit and I/V transform AMP is not saturated. The first integration current (CINT=1V) The first integration current (CINT=VCINT to 0.1V) DICI1=(1- ) X 100% DICI2=(1- ) X 100%The second integration current (CINT=1V) The second integration current (CINT=VCINT to 0.1V) APPLICATION EXAMPLE 4 6 14 12 11 5 7 9 10 MICROCOMPUTER 0.056mF CINTNCVCC TESTNCHN IRED HOLD TESTF NC PV CC 1.0mF PSDN PSDF 1.0mF PSD CHF HOLD HOLD CLALV STB RESET INT HOLD SOUT GND2GND1 STATIONARY LIGHT REMOVE CLAMP RECKON PULSE WIDTH I/V TRANSFORM AMP TRANSFORM (DOUBLE INTEGRATION) I1+I2 CIRCUIT SEQUENTIAL CONTROL LOGICCLAMP LEVEL REFERENCE BIAS VOLTAGE SWITCHING STATIONARY LIGHT REMOVE I/V TRANSFORM AMP

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. 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. Clamp level is established with fall edge of input clock. It repeats the same value after 16 clock. H L Indefiniteness Reset Reset canceled Bit Set up current (Typ.) 1 0.125 nA 2 o.25 nA 3 0.5 nA 4 1.0 nA 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

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. C INT 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 INT Reset canceled C INT rapid charge CH rapid charge Stationary light hold The first integration 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.

MITSUBISHI ICs (AV COMMON) M52957FP DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE SEQUENTIAL TIME CHART EXAMPLE VCC Input signal STB RESET CLALV HOLD IRED INT Output signal SOUT IC control content C INT rapid charge CH rapid charge Stationary light hold The first integration The second integration TESTN (F) pin CINT pin 100msec 25msec Reset period Movement period ofCINT dielectric dividepole measures circuit 10msec 100m sec 10msec 25msec 1msec CH rapid charge period 555mX128times 71msec Measurement circuit stable period Stationary light hold,the first integrationX128times 16msec The second integration sec MIN5 msec min500uS 50msec50msec 10msec

MITSUBISHI ICs (AV COMMON) M52957FP DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE MASK OPTION (1) The second integration current value can be doubled. (2.5m 5.0mA) (2) Control terminal variation Full spec (typical) 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 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. (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. 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 V CC or STB Terminal ON /OFF at consecutive distance detection. 11 5 7 9 10 8 MICROCOMPUTER S O U T H O L D I N T R E S E T S T B C L A L V 9 10 8 MICROCOMPUTER S O U T H O L D I N T 1.0nA0.25nA 0.5nA0.125nA

MITSUBISHI ICs (AV COMMON) M52957FP DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE DESCRIPTION OF PIN Name Peripheral circuit of pins Parameter Limits Unit Test conditions and noteMin. Typ. Max. HOLD INT CLALV RESET "H" input voltage 1.1 - 7.0 V "L" input voltage - - 0.3 "H" input current - - 1.0 mA V IH=5.5V "L" input current -100 -75 -50 V IL=0V STB "H" input voltage VCC -0.3 - 7.0 V "H" input voltage - - 0.3 "H" input current - - 3.0 mA VIH=5.5V "L" input current -150 -100 -50 V IL=0V SOUT "L" output voltage - - 0.3 V I OL =500mA "H" leak current - - 1.0 mAV IN=5.5V