M52979F Datasheet, PDF (1/5 Pages) Mitsubishi Electric Semiconductor – 2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT

MITSUBISHI ICs (AV COMMON)
M52979F
2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT
DESCRIPTION
The M52979F is a semiconductor integrated circuit designed to
detect quantity of light and used for cameras and illuminometers.
Because a high-sensitivity SPD sensor is built in this IC, it is
possible not only to reduce the space and expenses to mount it but
also to conduct wide-ranging detection of light volume.
FEATURES
• A 2-channel SPD sensor is built in.(1-channel for spot and one
for average)
• Wide-ranging detection of light volume.
• A temperature sensor circuit and a temperature constant refer-
ence voltage circuit are built in.
• Small-sized transparent molded plastic package.
APPLICATION
Automatic exposure control for cameras,illuminometers.
RECOMMENDED OPERATING CONDITION
Supply voltage range........................................................2.8 to 6.5V
Rated supply voltage................................................................4.65V
Light input range............................................SPOT 1 to 100000 lux
AVE. 0.1 to 14400 lux
PIN CONFIGURATION (TOP VIEW)
PC
POC
GND
TO
VREF
5.2mm
6.4mm
Outline 10FOX
DESCRIPTION OF PIN
PC : Sensor switch2
POC : Sensor switch1
TO : Temperature sensor output
VREF : T-CONSTANT voltage
PO : Photometry output
SWITCH OF MODE
PC
SW2
(SPOT)
H
ON
L
OFF
POC
H
L
PO
VCC
NC
GND
NC
SW1
(AVE)
OFF
ON
BLOCK DIAGRAM
SPOT
SPD
TEMPERATURE
COMPENSATION
+
1.4V
(T-PROPORTIONAL
VOLTAGE)
SW2
SW1
x 4.83
+
AVE
SPD
+
2.5V
(T-CONSTANT
VOLTAGE)
VREF
TEMPERATURE
COMPENSATION
TEMPERATURE
SENSOR
TO
BIAS
PC
PO
POC
GND
VCC
1