Mitsubishi M52979F Datasheet
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
MITSUBISHI ICs (AV COMMON)
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
V
: T-CONSTANT voltage
REF
PO : Photometry output
SWITCH OF MODE
PC
H ON H OFF
L OFF L ON
SW2
(SPOT)
POC
)
M52979F
PO
V
CC
NC
GND
NC
SW1
(AVE)
BLOCK DIAGRAM
SPOT
SPD
AVE
SPD
(T-CONSTANT
VOLTAGE)
2.5V
TEMPERATURE
+
1.4V
(T-PROPORTIONAL
VOLTAGE)
+
VREF TO
COMPENSATION
TEMPERATURE
COMPENSATION
TEMPERATURE
SENSOR
SW1
SW2
BIAS
+
x 4.83
PC
PO
POC
GND
V
CC
1
MITSUBISHI ICs (AV COMMON)
M52979F
2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT
ABSOLUTE MAXIMUM RATINGS
(Ta=25˚C unless otherwise noted)
Symbol Parameter Conditions Ratings Unit
V
CC
Supply voltage -0.3 to 7.0 V
Pd Power dissipation 180 mW
V
IN
IO(max) Output current
T
opr
stg
T
q
K
RECOMMENDED OPERATING CONDITION
Symbol Parameter
V
CC
Input voltage -0.3 to V
Pin V
REF
Pin TO and PO 1
+0.3 V
CC
10
mA
Operating temperature -20 to 60 ˚C
Storage temperature 30 to 85 ˚C
Thermal derating -3.0 mW/˚C
(Ta=25˚C unless otherwise noted)
Limits
Min Typ Max
Unit
Supply voltage 2.8 5.0 6.5 V
Lopr1 Operating illminance "SP" 1 to 100000 lux
Lopr2 Operating illminance "AVE" 0.1 to 14400 lux
ELECTRICALCHARACTERISTICS
(Ta=25˚C,light source 4500˚C,illuminance:measured after transmitting products through
CM 500 filter, unless otherwise noted)
Symbol Parameter
poi
Test Conditions
nt
Test
(2pin)
I
CC
Circuit current 9 illuminance:200 lux,POC:
H
"
"57mA
POCH H input voltage 2 value detected as "H"
POCL L input voltage 2 Value detected as H(current pull-out)
Limits
Min. Typ. Max.
CC
V
-0.8
CC
V
-2.2
PCCR Non-operating current 2 10 µ A
POCI Ground current 2 -550 -80 µ A
TOV Absolute value of temperature sensor output 4 1270 1550 1730 mV
dTOV1 Supply voltage variance 1 4 Output voltage variance at V
dTOV2 Supply voltage variance 2 4 Output voltage variance at V
CC
3V ± 0.2V -5 5 mV
CC
4.65V ± 1.85V -45 45 mV
dTO1 Output voltage temperature coefficient 4 Ta=25˚C(reference),Ta=-15 to 40˚C 20.4 22.1 23.8
dTO2 Accuracy of temperature sensor
V
dV
dV
dV
REF
REF1
REF2
REF3
Absolute value of output at V
V
REF
output voltage load variance1 5 Load current:-2mA -20 20 mV
V
REF
output voltage load variance2 5 Output voltage variance at V
V
REF
output voltage load variance3 5 Output voltage variance at V
REF
pin 5 2300 2500 2700 mV
4 Ta=10 to 40˚C -1.2 1.2
4 Ta=-15 to 10˚C -3.0 3.0
CC
3V ± 0.2V -5 5 mV
CC
4.65V ± 1.85V -45 45 mV
VPOS Absolute value of photometry output 10 SP side, illuminance 8 lux 1490 1750 1980 mV
dVPOS1 Photometry output supply voltage variance 1 10
dVPOS2 Photometry output supply voltage variance 2 10
dEVS1 Varience per level (1EV) 10
SP side.Output voltage variance at V
3V ± 0.2V
SP side.Output voltage variance at Vcc
4.65V ± 1.85V
SP side.Variance when illuminance changes
from 20 to 40
CC
-5 5 mV
-45 45 mV
80 86 92 mV
dEVS2 Photometry output linearity 10 SP side,illuminance : 1 to 100000 lux -0.3 0.3 mV
VPOA Absolute value of photometry output 10 AVE side, illuminance 8 lux 1190 1400 1630 mV
dVPOA1 Photometry output supply voltage variance 1 10
dVPOA2 Photometry output supply voltage variance 2 10
dEVA1 Variance per level (1EV) 10
AVE side.Output voltage variance at V
3V ± 0.2V
AVE side.Output voltage variance at Vcc
4.65V ± 1.85V
AVE side .Variance when illuminance changes
from 20 to 40
CC
-5 5 mV
-45 45 mV
80 86 92 mV
dEVA2 Photometry output linearity 10 AVE side,illuminance : 1 to 14400 lux -0.3 0.3 EV
trs Power supply response 1 10 SP side, illuminance 1 lux 25 60 ms
tra Power supply response 2 10 AVE side, illuminance 0.1 lux 40 150 ms
trc
trc
1
2
Switching response 1 10 SP AVE,illuminance 0.1 to 14400 lux 0.01 3 ms
Switching response 2 10 AVE SP,illuminance 1 to 100000 lux 0.01 3 ms
Unit
V
V
mV/˚C
˚C
2
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