M52957FP Datasheet, PDF (1/9 Pages) Mitsubishi Electric Semiconductor – DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

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
Supply voltage range......................................................2.2 to 5.5V
Rated supply voltage.................................................................3.0V
PIN CONFIGURATION (TOP VIEW)
PSDN 1
CHN 2
VCC 3
(TESTN)
NC
4
STB 5
CINT 6
RESET 7
SOUT 8
16 PSDF
15 CHF
14 ^GND1
13
(TESTF)
NC
12 GND2
11 CLALV
10 HOLD
9 INT
Outline 16P2E-A
NC:NO CONNECTION
BLOCK DIAGRAM
Note: pin4,13 is connected only engineering sample
CHN 2
PSDN 1
PSDF 16
CHF 15
VCC
3
I1
STATIONARY
LIGHT
REMOVE
HOLD
HOLD
I2
STATIONARY
LIGHT
REMOVE
NC
4
TESTN
I/V
TRANSFORM
AMP
CINT
6
PULSE WIDTH
TRANSFORM
(DOUBLE INTEGRATION)
RECKON
I1
I1+I2
BIAS
REFERENCE
VOLTAGE
I/V
TRANSFORM
AMP
CLANP
CIRCUIT
CLAMP LEVEL
SWITCHING
HOLD
TESTF
13 NC
SEQUENTIAL CONTROL LOGIC
14
GND1
12
GND2
11
CLALV
5
7
9
10
8
STB
RESET INT HOLD SOUT
1