M52957FP View Datasheet(PDF) - MITSUBISHI ELECTRIC
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M52957FP Datasheet PDF : 9 Pages
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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.
SOUT output at that time,obtain AF slope and AF linearity from the
equations below.
∆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=(1-
The first integration current (CINT=1V)
) X 100%
The first integration current (CINT=VCINT to 0.1V)
∆ICI2=(1-
The second integration current (CINT=1V)
) X 100%
The second integration current (CINT=VCINT to 0.1V)
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 120kΩ 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
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 µA 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 : ∆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 : 120kΩ
∆INF, IPSD
The input current of one side channel when stationary light remove
circuit and I/V transform AMP is not saturated.
APPLICATION EXAMPLE
CHN
2
1.0µF
1
PSDN
PSD
PSDF
16
CHF
15
1.0µF
VCC
3
0.056µF
NC
4
CINT
6
STATIONARY
LIGHT
REMOVE
HOLD
HOLD
STATIONARY
LIGHT
REMOVE
TESTN
11
I/V
TRANSFORM
AMP
PULSE WIDTH
TRANSFORM
(DOUBLE INTEGRATION)
RECKON
I1
I1+I2
BIAS
REFERENCE
VOLTAGE
12
I/V
TRANSFORM
AMP
CLAMP
CIRCUIT
HOLD
TESTF
CLAMP LEVEL
SWITCHING SEQUENTIAL CONTROL LOGIC
13 NC
GND1 14
12 GND2
11
CLALV
5
7
9
10
8
STB RESET INT HOLD SOUT
PVCC
MICROCOMPUTER
IRED
4
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