M52979F

M52979F MITSUBISHI | Alldatasheet

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)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 AVE. 0.1 to 14400 lux BLOCK DIAGRAM PIN CONFIGURATION (TOP VIEW) DESCRIPTION OF PIN PC : Sensor switch2 POC : Sensor switch1 TO : Temperature sensor output V REF : T -CONSTANT voltage PO : Photometry output SWITCH OF MODE PC PO POC GND VCC VREF TO SW1 SW2 x 4.83 SPOT SPD 1.4V (T-PROPORTIONAL VOLTAGE) AVE SPD 2.5V (T-CONSTANT VOLTAGE) TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION BIAS TEMPERATURE SENSOR PC SW2 (SPOT) POC SW1 (AVE) H ON H OFF L OFF L ON PC POC GND TO V REF PO VCC NC GND NC 5.2mm 6.4mm Outline 10FOX

MITSUBISHI ICs (AV COMMON) M52979F 2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT ABSOLUTE MAXIMUM RATINGS (Ta=25˚C unless otherwise noted) RECOMMENDED OPERATING CONDITION (Ta=25˚C unless otherwise noted) ELECTRICALCHARACTERISTICS (Ta=25˚C,light source 4500˚C,illuminance:measured after transmitting products through CM 500 filter, 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 Input voltage -0.3 to V CC +0.3 V IO(max) Output current Pin V REF 10 mAPin TO and PO 1 T opr Operating temperature -20 to 60 ˚C T stg Storage temperature 30 to 85 ˚C K q Thermal derating -3.0 mW/˚C Symbol Parameter Limits UnitMin Typ Max V CC 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 Symbol Parameter Test poi nt Test Conditions Limits UnitMin. Typ. Max. I CC Circuit current 9 illuminance:200 lux,POC: (2pin) H "5 7 m A POCH H input voltage 2 value detected as "H" V CC -0.8 V POCL L input voltage 2 Value detected as H(current pull-out) V CC -2.2 V PCCR Non-operating current 2 10 m A POCI Ground current 2 -550 -80 m A dTOV1 Supply voltage variance 1 4 Output voltage variance at V CC 0.2V -5 5 mV dTOV2 Supply voltage variance 2 4 Output voltage variance at V 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 mV/˚C dTO2 Accuracy of temperature sensor 4 Ta=10 to 40˚C -1.2 1.2 ˚C4 Ta=-15 to 10˚C -3.0 3.0 V REF Absolute value of output at V REF pin 5 2300 2500 2700 mV dV REF1 V REF output voltage load variance1 5 Load current:-2mA -20 20 mV dV REF2 V REF output voltage load variance2 5 Output voltage variance at V CC 0.2V -5 5 mV dV REF3 V REF output voltage load variance3 5 Output voltage variance at V CC 4.65V 1.85V -45 45 mV dVPOS1 Photometry output supply voltage variance 1 10SP side.Output voltage variance at V CC 0.2V -5 5 mV dVPOS2 Photometry output supply voltage variance 2 10SP side.Output voltage variance at Vcc 4.65V 1.85V -45 45 mV dEVS1 Varience per level (1EV) 10 SP side.Variance when illuminance changes from 20 to 40 80 86 92 mV dEVS2 Photometry output linearity 10 SP side,illuminance : 1 to 100000 lux -0.3 0.3 mV dVPOA1 Photometry output supply voltage variance 1 10AVE side.Output voltage variance at V CC 0.2V -5 5 mV dVPOA2 Photometry output supply voltage variance 2 10AVE side.Output voltage variance at Vcc 4.65V 1.85V -45 45 mV dEVA1 Variance per level (1EV) 10 AVE side.Variance when illuminance changes from 20 to 40 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 Switching response 1 10 SP AVE,illuminance 0.1 to 14400 lux 0.01 3 ms trc Switching response 2 10 AVE SP ,illuminance 1 to 100000 lux 0.01 3 ms

)MITSUBISHI ICs (AV COMMON) M52979F 2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT TYPICAL CHARACTERISTICS THERMAL DERATING (MAXIMUM RTAING) AMBIENT TEMPERATURE Ta (˚C) 0 25 50 100 100 200 150 POWER DISSIPATION P d (mW) 180 8560 -2.5mW/˚C ILLUMINANCE OUTPUT DEFRECTION(AVE) ILLUMINANCE (LX) 0.01 0.3 OUTPUT DEFLECTION (EV)0.2 0.1 0.0 -0.1 -0.2 -0.3 0.1 1 10 100 1000 10000100000 Vcc=5V 1EV:definited by 12.81X-3.21 output voltage AMBIENT TEMPERATURE(˚C) -30 3000OUTPUT VOLTAGE (mV) TEMPERATURE SENSOR OUTPUT VOLTAGE VCC=5V 2500 2000 1500 1000 500 - 2 0 - 1 0 0 1 02 03 04 05 06 07 0 ILLUMINANCE OUTPUT ILLUMINABCE(LX) 0.01 1 100 1000 1500 3000 1000 2000 OUTPUT VOLTAGE(mW) 2500 500 0.1 10 10000 Vcc=5V IR CUTOFF FILTER SPOT AVER 100000 ILLUMINANCE (LX) 0.3 ILLUMINANCE OUTPUT DEFRECTION(SP)OUTPUT DEFLECTION (EV) Vcc=5V 1EV:definited by 4081X-1021X output voltage 0.2 0.1 0.0 -0.1 -0.2 -0.3 0.01 0.1 1 10 100 1000 10000100000

MITSUBISHI ICs (AV COMMON) M52979F 2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT I/O SYSTEM EXAMPLE Method to switch photometric amplifier : 2-pin (POC)H - SP side, L - AVE side Conditions on light for photometric amplifier IR cutoff filter : CM500 (glass filter) Light source color temperature : 4500˚K 10 9 8 7 6 1 2 3 4 5 80mA TYP 320mA TYP 320mA TYP 5.0V L H L H PC POC GND TO VREF PO VCC NC NC NC IC LIGHT IR cutoff filter (CM500) Luminance definition surface

)MITSUBISHI ICs (AV COMMON) M52979F 2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT TEMPERATURE SENSOR OUTPUT VOLTAGE Temperature conversion method based on temperature sensor output voltage. Vta: Temperature sensor output voltage at Ta=25˚C Vto: Temperature sensor output voltage at ambient temperature Conversion formula Ambient temperature = (Vto - Vta) / 22.14mV + 298˚K PHOTOMETRY OUTPUT VOLTAGE Calculate the photometry output voltage at Ta=25˚C Ambient temperature: photometry output voltage at ambient temperature Ta (˚ K) : Vo Conversion formula Photometry output voltage at Ta=25˚C =Vo / Ta X 298˚K Conversion error range 0.4EV (-15 to 40˚C SENSOR FORM UNIT:mm210 1125 180 SPOT AVE 100 50m 750 1500 150 160 2250 250