DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE DESCRIPTION M
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M52957FP
DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE DESCRIPTION
M52957FP semiconductor integrated circuit containing distance detection signal processing circuit supply voltage. This device transforms each optical inflow current from SENSOR into voltage, integrates that output after doing calculation corresponds I1/(I1+I2), outputs time data(pulse term).
PSDN
(TESTN)
CONFIGURATION (TOP VIEW)
PSDF GND1
M52957FP
(TESTF)
FEATURES
CINT RESET SOUT
GND2 CLALV HOLD
Wide supply voltage range Vcc=2.2 5.5V Includes clamp level switching circuit (Switch kinds outside control) Includes standby function Includes power RESET function
Outline 16P2E-A
APPLICATION
Auto focus control CAMERA Sensor short distance
NC:NO CONNECTION
RECOMMENDED OPERATING CONDITION
Supply voltage range.2.2 5.5V Rated supply voltage.3.0V
BLOCK DIAGRAM
Note: pin4,13 connected only engineering sample
TESTN PSDN STATIONARY LIGHT REMOVE TRANSFORM
CINT
PULSE WIDTH TRANSFORM (DOUBLE INTEGRATION) BIAS
RECKON I1+I2 REFERENCE VOLTAGE
HOLD HOLD PSDF STATIONARY LIGHT REMOVE TRANSFORM CLAMP LEVEL SWITCHING CLANP CIRCUIT
HOLD TESTF
SEQUENTIAL CONTROL LOGIC
GND1
GND2
CLALV
RESET
HOLD
SOUT
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE ABSOLUTE MAXIMUM RATINGS (Ta=25°C,unless otherwise noted)
Symbol VI/O Isout Topr Tstg Vsurge Parameter Supply voltage Power dissipation Thermal derating supply voltage Another supply voltage Output inflow current Operating temperature Storage temperature Surge voltage Ratings -3.2 -0.3 VCC+0.3 ±200V over Unit Remark note Ta=25°C 25°C Pin5,7,8,9,10,11 note open collector
C=200PF
Note principle,do provide supply voltage reversely. principle,do provide terminals with voltage over supply voltage under ground voltage.
ELECTRICAL CHARACTERISTICS
Symbol 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 HOLD Consuming current Classification
(Ta=25°C,Vcc=3.0V, unless otherwise noted) Parameter Test conditions Limits Typ. Max. 17.7 19.0 23.0 24.7 Unit
Min.
Operating supply voltage range Usual consuming current While Rapid charge consuming current While Rapid charge consuming current While STAND consuming current HOLD input voltage HOLD input voltage HOLD input current HOLD input current input voltage input voltage input current input current CLALV input voltage CLALV input voltage CLALV input current CLALV input current RESET input voltage RESET input voltage RESET input current RESET input current input voltage input voltage input current input current rapid charge current stationary charge current stationary discharge current While rapid charge consuming current While CINT rapid charge consuming current
-0.3
VIH=5.5V VIL=0V
VIH=5.5V VIL=0V
CLALV
VIH=5.5V VIL=0V
RESET
VIH=5.5V VIL=0V
VIH=5.5V VIL=0V IPSD=5
HOLD
VCH=0V VCH=0V CH=1.5V
-100 -0.3 -100 -0.3 -100 -0.3 -100 -0.3 -0.3 -150 -100 -2000 -1000 -500
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING 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 IPSD ICLAM Data Sensor input condition minus input condition Double integration Classification Parameter CINT rapid charge current CINT reference voltage first integration current second integration current first integration current stability percentage second integration current stability percentage first second integration current ratio output time(9:1)-1 output time(6:4)-1 output time(3:7)-1 slope linearity-1 output time(9:1)-2 output time(6:4)-2 output time(3:7)-2 slope linearity-2 output time(9:1)-3 output time(6:4)-3 output time(3:7)-3 slope linearity-3 output time(9:1) output time(6:4) 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) criterion VCINT=1.5V VCHF=2V, VCHN=0V Min. -3.31 ICI1 ICI2 Near side side Near side side Near side side 2.12 11.78 7.77 3.77 6.57 11.78 7.77 3.77 6.57 11.78 7.77 3.77 6.57 Limits Typ. -2.54 2.36 13.40 8.95 4.51 8.89 13.40 8.95 4.51 8.89 13.40 8.95 4.51 8.89 Max. -1.77 2.60 15.02 10.13 5.25 11.21 15.02 10.13 5.25 11.21 15.02 10.13 5.25 11.21 msec msec msec msec msec msec msec msec msec msec msec msec µsec µsec µsec Unit
Near side side1 Near side side4 Near side side7
input condition
Near side side1 Near side side Near side side
input condition
Near side side1 (Consition 1-2) Near side side4 (Consition 1-2) Near side side7 (Consition 1-2) VIN=5.5V IOUT=500µA
Change quantity Typ. current
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE
ICC2, ICC3, ICC4, ICHQC, ICHC, ICHD, ICINTC, VCINT, ICI1, ICI2 logic control terminal, correspond parameter. ICI1, ICI2 Change ratio between first integration current second integration current voltage CINT that {CINT reference voltage(VCINT) 0.1V}
ICI1=(1The first integration current (CINT=1V) first integration current (CINT=VCINT 0.1V)
SOUT output that time,obtain slope linearity from 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 I1+I2=100nA 1).The pulse width SOUT output input with I1:I2=9:1
100%
4).The pulse width SOUT output input with I1:I2=6:4 7).The pulse width SOUT output input with I1:I2=3:7
ICI2=(1-
second integration current (CINT=1V) second integration current (CINT=VCINT 0.1V)
100%
slope AF=D(9 linearity L(AF)=(D(9 4))/(D(6 quite resistance 120k INF, IPSD input current side channel when stationary light remove circuit transform saturated.
:1)-1, 4)-1, 7)-1, AF-1, LAF-1, :1)-2, 4)-2, 7)-2, AF-2, LAF-2, :1)-3, 4)-3, 7)-3, AF-3, LAF-3 Connect resistance 120k instead establish current output from photo coupler correspond parameter. input varied resistance ratio. measure pulse width
APPLICATION EXAMPLE
0.056µF 1.0µF PSDN STATIONARY LIGHT REMOVE HOLD HOLD PSDF 1.0µF CLAMP LEVEL SWITCHING STATIONARY LIGHT REMOVE TRANSFORM CLAMP CIRCUIT HOLD TESTF TRANSFORM TESTN CINT
PULSE WIDTH TRANSFORM (DOUBLE INTEGRATION) BIAS RECKON I1+I2
REFERENCE VOLTAGE
SEQUENTIAL CONTROL LOGIC PVCC
GND1
GND2 CLALV
RESET
SOUT
HOLD
IRED MICROCOMPUTER
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE CONTROLS
This terminal enables operate. Standby HIGH this terminal. operate this terminal. RESET This terminal resets whole including logic. This terminal resets HIGH. This terminal cancel resetting edge from HIGH LOW. includes power reset function. control from external also possible. reset term takes between power reset control signal from external.
Indefiniteness Reset Reset canceled
CLALV This terminal sets clamp level. including 4bit,16way clamp level setting possible inputting clock after reset canceled(include none clamp). current value each right table. number input clock clamp level follows. current (Typ.) 0.125 o.25
Clock value pole
Clamp level(Typ.) None clamp 0.125 0.250 0.375 0.500 0.625 0.750 0.875 1.000 1.125 1.250 1.375
Clock value
Clamp level(Typ.) 1.500 1.625 1.750 1.875 None clamp 0.125 0.250 0.375 0.500
While
this
terminal
HIGH,dielectric
divide
countermeasures circuit integration condenser active.
Clamp level established with fall edge input clock. repeats same value after clock.
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE
HOLD, These terminals implement following controls inputting HIGH/LOW. CINT rapid charge rapid charge Stationary light hold first integration second integration
Stationary light hold
HOLD first integration CINT rapid charge rapid charge Reset canceled second integration
CINT rapid charge After reset canceled, capacity charged rapidly until terminal first falls. rapid charge After reset canceled, capacity charged rapidly until terminal first rises falls. Stationary light hold After reset canceled, holds stationary light while HOLD terminal HIGH. first integration After reset canceled, HOLD terminal HIGH terminal HIGH, first integration implemented while terminal HIGH. Therefore,the first integration must finished(INT terminal from HIGH LOW) until stationary light hold will completed (HOLD terminal from HIGH LOW) second integration After reset canceled, second integration implemented HOLD terminal terminal HIGH. And,the second integration completed exceeding judgement level CINT terminal although terminal HIGH.
SOUT When second integration starts,This terminal becomes from HIGH LOW. CINT terminal exceeds judge level terminal becomes from HIGH LOW, this terminal becomes from HIGH. (notice) signal from microcomputer,the signal that controls IRED ON/OFF required except above mentioned control signals. applying timing HOLD available.
MIN5µsec
Input signal
10µsec
RESET
CLALV
50µsec
50µsec
HOLD
min500uS
IRED
Output signal
SEQUENTIAL TIME CHART EXAMPLE
SOUT
control content
CINT rapid charge
rapid charge
Stationary light hold
first integration
second integration
TESTN
Reset period
CINT
rapid charge period
Measurement circuit stable period
Stationary light hold,the first integrationX128times
Movement period ofCINT dielectric dividepole measures circuit
second integration
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE
25msec
10µsec
10µsec 100µ
25msec
100µsec
1msec
555µX128times
71msec
16msec
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE MASK OPTION
second integration current value doubled. (2.5µ 5.0µA)
0.125nA 0.25nA 0.5nA 1.0nA
Control terminal variation
Full spec (typical)
Fixes parts switches correspond each figure OFF,controls another part CLALV terminal When standby function required such switched OFF,STB terminal eliminated. RESET Since include power reset circuit,RESET terminal eliminated. merit controlling RESET terminal from outside,distance detection time shortened because there need switch Terminal /OFF consecutive distance detection.
MICROCOMPUTER
This type uses CLALV, STB, RESET, INT, HOLD, SOUT terminal terminal microcomputer. This typical type M52957FP. Most simplified type
MICROCOMPUTER
This type does connect CLALV, STB, RESET terminals microcomputer. When above mentioned terminals connected microcomputer without changing mask,connect each terminal ground. this case,clamp level becomes standby function lost. Power reset used reset. Explanation terminal that simplified. typical type,16way clamp levels external control,but also terminal simplified mask option follows. Clamp level fixation Selects point from steps clamp level fixes Clamp level step changeover Selects points from clamp level switches changing CLALV terminal HIGH/LOW. However,as selecting points, there following constraint.
CLALV
M52957FP
DISTANCE DETECTION SIGNAL PROCESSING SUPPLY VOLTAGE DESCRIPTION
Name Peripheral circuit pins Parameter input voltage HOLD CLALV RESET input current input voltage input voltage input current input current -100 input voltage input current Min. Limits Typ. Max. Unit Test conditions note
VIH=5.5V
VIL=0V
-0.3
VIH=5.5V
-150
-100
VIL=0V
output voltage SOUT leak current
IOL=500µA
VIN=5.5V
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