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 PIN CONFIGURATION (TOP VIEW) detect quantity of light and used for cameras and illuminometers. Because a high-sensitivity SPD sensor is built in this IC, it is PC PO POC VCC GND NC 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 reference voltage circuit are built in. Small-sized transparent molded plastic package. • TO GND VREF NC 5.2mm 6.4mm APPLICATION Outline 10FOX Automatic exposure control for cameras,illuminometers. DESCRIPTION OF PIN PC : Sensor switch2 RECOMMENDED OPERATING CONDITION POC : Sensor switch1 Supply voltage range........................................................2.8 to 6.5V TO : Temperature sensor output Rated supply voltage................................................................4.65V VREF : T-CONSTANT voltage Light input range............................................SPOT 1 to 100000 lux PO : Photometry output AVE. 0.1 to 14400 lux SWITCH OF MODE SW2 (SPOT) POC SW1 (AVE) H ON H OFF L OFF L ON PC BLOCK DIAGRAM PC SPOT SPD SW2 TEMPERATURE COMPENSATION + x 4.83 SW1 + PO 1.4V (T-PROPORTIONAL VOLTAGE) POC AVE SPD + TEMPERATURE COMPENSATION GND BIAS TEMPERATURE SENSOR 2.5V (T-CONSTANT VOLTAGE) VREF 1 VCC TO 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 VCC Pd VIN Supply voltage Power dissipation Input voltage Parameter IO(max) Output current Topr Tstg Kq Operating temperature Storage temperature Thermal derating Conditions Ratings -0.3 to 7.0 180 -0.3 to VCC+0.3 10 1 -20 to 60 30 to 85 -3.0 Pin VREF Pin TO and PO Unit V mW V mA ˚C ˚C mW/˚C RECOMMENDED OPERATING CONDITION (Ta=25˚C unless otherwise noted) Symbol VCC Lopr1 Lopr2 Parameter Min 2.8 Supply voltage Operating illminance "SP" Operating illminance "AVE" Limits Typ Max 5.0 6.5 1 to 100000 0.1 to 14400 Unit V lux lux ELECTRICALCHARACTERISTICS (Ta=25˚C,light source 4500˚C,illuminance:measured after transmitting products through CM 500 filter, unless otherwise noted) ICC POCH POCL PCCR POCI TOV dTOV1 dTOV2 dTO1 Test poi nt Circuit current 9 H input voltage 2 L input voltage 2 Non-operating current 2 Ground current 2 Absolute value of temperature sensor output 4 Supply voltage variance 1 4 Supply voltage variance 2 4 Output voltage temperature coefficient 4 dTO2 Accuracy of temperature sensor VREF dVREF1 dVREF2 dVREF3 VPOS Absolute value of output at VREF pin VREF output voltage load variance1 VREF output voltage load variance2 VREF output voltage load variance3 Absolute value of photometry output 4 4 5 5 5 5 10 dVPOS1 Photometry output supply voltage variance 1 10 dVPOS2 Photometry output supply voltage variance 2 10 dEVS1 Varience per level (1EV) 10 dEVS2 VPOA Photometry output linearity Absolute value of photometry output 10 10 dVPOA1 Photometry output supply voltage variance 1 10 dVPOA2 Photometry output supply voltage variance 2 10 dEVA1 Variance per level (1EV) 10 dEVA2 trs tra trc1 trc2 Photometry output linearity Power supply response 1 Power supply response 2 Switching response 1 Switching response 2 10 10 10 10 10 Symbol Limits Parameter Test Conditions illuminance:200 lux,POC: (2pin)"H" value detected as "H" Value detected as H(current pull-out) Output voltage variance at V CC 3V ±0.2V Output voltage variance at V CC 4.65V ±1.85V Ta=25˚C(reference),Ta=-15 to 40˚C Ta=10 to 40˚C Ta=-15 to 10˚C Load current:-2mA Output voltage variance at V CC 3V±0.2V Output voltage variance at V CC 4.65V±1.85V SP side, illuminance 8 lux SP side.Output voltage variance at VCC 3V±0.2V SP side.Output voltage variance at Vcc 4.65V±1.85V SP side.Variance when illuminance changes from 20 to 40 SP side,illuminance : 1 to 100000 lux AVE side, illuminance 8 lux AVE side.Output voltage variance at VCC 3V±0.2V AVE side.Output voltage variance at Vcc 4.65V±1.85V AVE side.Variance when illuminance changes from 20 to 40 AVE side,illuminance : 1 to 14400 lux SP side, illuminance 1 lux AVE side, illuminance 0.1 lux SP AVE,illuminance 0.1 to 14400 lux AVE SP,illuminance 1 to 100000 lux Min. Typ. Max. 5 7 VCC-0.8 VCC-2.2 Unit mA V V µA µA mV mV mV 10 -550 -80 1270 1550 1730 -5 5 -45 45 20.4 22.1 23.8 mV/˚C -1.2 1.2 -3.0 3.0 2300 2500 2700 -20 20 -5 5 -45 45 1490 1750 1980 ˚C mV mV mV mV mV -5 5 mV -45 45 mV 92 mV 80 86 -0.3 0.3 1190 1400 1630 mV mV -5 5 mV -45 45 mV 86 92 mV 25 40 0.01 0.01 0.3 60 150 3 3 EV ms ms ms ms 80 -0.3 2 MITSUBISHI ICs (AV COMMON)) M52979F 2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT TYPICAL CHARACTERISTICS ILLUMINANCE OUTPUT THERMAL DERATING (MAXIMUM RTAING) 3000 200 Vcc=5V IR CUTOFF FILTER OUTPUT VOLTAGE(mW) POWER DISSIPATION Pd (mW) -2.5mW/˚C 180 150 100 50 2500 SPOT AVER 2000 1500 1000 500 0 0.01 0 0 25 50 60 75 85 0.1 1 10 100 1000 10000 100000 100 ILLUMINABCE(LX) AMBIENT TEMPERATURE Ta (˚C) ILLUMINANCE OUTPUT DEFRECTION(SP) ILLUMINANCE OUTPUT DEFRECTION(AVE) 0.3 0.2 Vcc=5V 0.1 0.0 -0.1 1EV:definited by 12.81X-3.21 output voltage -0.2 -0.3 0.01 0.1 1 10 100 1000 10000100000 ILLUMINANCE (LX) TEMPERATURE SENSOR OUTPUT VOLTAGE 3000 OUTPUT VOLTAGE (mV) 2500 2000 1500 VCC=5V 1000 500 0 -30 -20 -10 0 10 20 30 40 50 60 70 AMBIENT TEMPERATURE(˚C) 3 OUTPUT DEFLECTION (EV) OUTPUT DEFLECTION (EV) 0.3 0.2 Vcc=5V 0.1 0.0 -0.1 1EV:definited by 4081X-1021X output voltage -0.2 -0.3 0.01 0.1 1 10 100 1000 10000100000 ILLUMINANCE (LX) MITSUBISHI ICs (AV COMMON) M52979F 2-CHANNEL SPD SENSOR BUILT-IN DETECT AMOUNT OF LIGHT I/O SYSTEM 10 9 8 320µA TYP 7 6 320µA TYP 80µA TYP 1 2 3 4 5 EXAMPLE H 1 PC PO 10 2 POC VCC 9 3 GND NC 8 4 TO NC 7 5 VREF NC 6 L H 5.0V L 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 LIGHT IR cutoff filter (CM500) Luminance definition surface IC 4 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. 180 • SENSOR FORM UNIT:µm 210 Vta: Temperature sensor output voltage at Ta=25˚C Vto: Temperature sensor output voltage at ambient temperature 100 Conversion formula Ambient temperature 750 = (Vto - Vta) / 22.14mV + 298˚K 47 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 0 1500 • • 50µ 25 160 =Vo / Ta X 298˚K Conversion error range ± 0.4EV (-15 to 40˚C ) SPOT 150 1125 2250 5 AVE