m52957fp Mitsumi Electronics, Corp., m52957fp Datasheet - Page 4

• Manufacturer Part Number: m52957fp
• Description: Distance Detection Signal Processing For 3v Supply Voltage
• Manufacturer: Mitsumi Electronics, Corp.

I
Set up the logic control terminal, correspond to the parameter.
Change ratio between the first integration current and the second
integration current at a voltage of C
{C
D
D
Connect the resistance of 120k
current output from photo coupler correspond to the parameter. And
input the varied resistance ratio. And measure the pulse width of
APPLICATION EXAMPLE
CC2
I
(9 :1)-1
(3 : 7)-2
CI1
INT
I
I
CI1
CI2
, I
, I
CC3
reference voltage(V
=(1-
=(1-
, D
, AF-2, LAF-2, D
PSD
CI2
1.0 F
1.0 F
, I
(6 : 4)-1
The second integration current (C
CC4
The first integration current (C
The second integration current (C
, I
PSDN
PSDF
CHN
CHF
The first integration current (C
, D
CHQC
(3 : 7)-1
16
15
2
1
, I
CHC
, AF-1, LAF-1, D
CINT
(9 :1)-3
, I
STATIONARY
LIGHT
REMOVE
STATIONARY
LIGHT
REMOVE
GND1
CHD
) to 0.1V} and 1V.
HOLD
HOLD
, D
3
, I
CINTC
(6 : 4)-3
V
INT
CC
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
instead of PSD and establish
14
INT
that is
, V
, D
INT
=V
CINT
INT
=V
(9 :1)-2
(3 : 7)-3
CINT
11
12
12
=1V)
INT
CINT
, I
=1V)
to 0.1V)
CI1
TRANSFORM
TRANSFORM
, D
GND2
, AF-3, LAF-3
to 0.1V)
, I
(6 : 4)-2
CI2
AMP
AMP
I/V
I/V
) X 100%
,
TESTN
) X 100%
CLALV
NC
CLAMP LEVEL
SWITCHING
4
CIRCUIT
CLAMP
11
0.056 F
(DOUBLE INTEGRATION)
S
equations below.
Input condition1 : I
Input condition2 : I
Input condition3 : I
D
D
D
AF slope : AF=D
AF linearity : L(AF)=(D
PSD quite resistance : 120k
The input current of one side channel when stationary light remove
circuit and I/V transform AMP is not saturated.
CINT
STB
OUT
INF, I
(9 : 1)
(6 : 4)
(3 : 7).
PULSE WIDTH
TRANSFORM
5
output at that time,obtain AF slope and AF linearity from the
....The pulse width of SOUT output at input with I1:I2=9:1
....The pulse width of SOUT output at input with I1:I2=6:4
...The pulse width of SOUT output at input with I1:I2=3:7
SEQUENTIAL CONTROL LOGIC
PSD
RECKON
MICROCOMPUTER
RESET
HOLD
6
I1+I2
I1
7
INT HOLD
(9 : 1)
PSD
PSD
PSD
9
MITSUBISHI ICs (AV COMMON)
(Stationary light current)=10 A I1+I2=100nA
(Stationary light current)=0
(Stationary light current)=0
(9 : 1)
- D
REFERENCE
(3 : 7)
VOLTAGE
10
- D
BIAS
SOUT
TESTF
(6 : 4)
)/(D
8
(6 : 4)
M52957FP
13
- D
NC
(3 : 7)
PV
CC
)
IRED
I1+I2=100nA
I1+I2=50nA
4