PHOTOPSTM PHOTODIODE-AMPLIFIER HYBRIDS APPLICATIONS FEATURES * General Purpose Light Detection * Laser Power Monitoring * Medical Analysis * Laser Communications * Bar Code Readers * Industrial Control Sensors * Pollution Monitoring * Guidance Systems * Colorimeter The Photop Series, combines a photodiode with an operational amplifier in the same package. Photops general-purpose detectors have a spectral range from either 350 nm to 1100 nm or 200 nm to 1100nm. They have an integrated package ensuring low noise output under a variety of operating conditions. These op-amps are specifically selected by UDT Sensors engineers for compatibility to our photodiodes. Among many of these specific parameters are low noise, low drift and capability of supporting a variety of gains and bandwidths determined by the external feedback components. Operation from DC level to several MHz is possible in * Detector/Amplifier Combined * Adjustable Gain/Bandwidth * Low Noise * Wide Bandwidth * DIP Package * Large Active Area an either unbiased configuration for low speed, low drift applications or biased for faster response time. Any modification of the above devices is possible. The modifications can be simply adding a bandpass optical filter, integration of additional chip (hybrid) components inside the same package, utilizing a different opamp, photodetector replacement, modified package design and / or mount on PCB or ceramic. For your specific requirements, contact one of our Applications Engineers. Typical Spectral Response 0.7 Responsivity (A/W) 0.6 Standard 0.5 0.4 0.3 UV Enhanced 0.2 0.1 0 200 300 400 500 600 700 800 900 1000 1100 Wavelength (nm) Typical Gain vs Frequency 0 Typical Responsivity vs Frequency Rf = 10 k 10000 Gain (dB) 455LN 455 Responsivity (kV/W) -1 455HS -2 -3 -4 -5 -6 0.01 UDT - 455, 970 nm R f = 10M 1000 Rf = 1M 100 Rf = 100K 10 Rf = 10K 0.1 1 1 0.001 10 0.01 1 UDT Sensors Inc. Phone: 0.1 1 10 Frequency (MHz) Frequency (MHz) 310-978-0516 Fax: 310-644-1727 http:\\www.udt.com 0V 200 nm -10V 970 nm typ Temp Range (C) Package Style Storage -10 mV typ NEP (W/O Hz) Operating -10 V typ typ Reverse Voltage (V) Shunt Resistance (M-ohm) max -10 V ELECTRO-OPTICAL SPECIFICATIONS AT TA=23OC Dark Current (nA) typ 0V typ typ 970 nm typ 200 nm min Capacitance (pF) Min 2 Responsivity (A/W) Dimension (mm) Active Area Area (mm ) Model No. TYPICAL max PHOTOPSTM PHOTODIODE SPECIFICATIONS 350-1100 nm Spectral Range 28/ DIP UDT-451 UDT-455 5.1 85 2.54f UDT-455LN .60 15 .25 3 1.4 e- 14 .65 29 / TO-5 30 UDT-455HS 4.57f 330 60 100 11.3 f 1500 300 .5 10 2 1.9 e- 14 25 30 / TO-8 3.9 e -14 31 / Special 0 ~ +70 16 UDT-555D -30 ~ +100 UDT-020D 200-1100 nm Spectral Range UDT-455UV 5.1 2.54f UDT-020UV 16 4.57f UDT-055UV 50 7.98f 100 11.3f 300 100 9.2 e -14 1000 50 1.3 e -13 2500 20 2.1 e -13 29 / TO-5 UDT-455UV/LN .10 .14 30 / TO-8 5 31 / Special UDT-555UV 4500 10 2.9 e -13 31 / Special UDT-555UV/LN For MECHANICAL DRAWINGS Click Here OPERATIONAL AMPLIFIER SPECIFICATIONS Quiescent Supply Current (mA) Input Offset Voltage (mV) Temp Coefficient Input Offset Voltage ( V / C) Input Bias Current (pA) Gain Bandwidth Product (MHz) Slew Rate (V /s) Open Loop Gain, DC (V / mV) 100 Hz min typ 3.0 6.0 10 --- 30 200 --- 4.0 --- 13 50 150 --- 18 10 --- 15 18 2.8 5.0 0.5 3 4 30 80 400 3.0 5.4 5 9 50 200 20 15 10 --- 15 18 4.8 8.0 0.5 3 4 30 80 500 11 26 25 40 50 200 20 15 10 5 15 18 0.9 1.8 .26 1 --- 20 .15 0.3 0.5 1 0.5 3 50 2500 78 27 0.22 --- 15 22 2.7 4.0 0.4 1 3 10 40 200 3.5 5.7 7.5 11 75 220 20 15 10 5 15 18 2.5 3.5 .05 0.25 0.5 1 0.5 1 --- 2 1 2 1k 1770 11 7 0.4 typ typ 2.5 min typ 1.4 typ max 18 min typ max max 15 typ typ 1 kHz max 1 kHz --- min max Input Noise Current (fA/O Hz) typ 15 V UDT-451 Input Noise Voltage (nV/O Hz) typ Supply Voltage (V) typ Model No. TYPICAL ELECTRO-OPTICAL SPECIFICATIONS AT TA=23 C UDT-455 UDT-455UV UDT-020D UDT-020UV UDT-455HS UDT-455LN UDT-455UV/LN UDT-055UV UDT-555D UDT-555UV UDT-555UV/LN UDT Sensors Inc. Phone: 310-978-0516 Fax: 310-644-1727 http:\\www.udt.com 2 PHOTOPTM SERIES SCHEMATIC DIAGRAMS The output voltage is proportional to the light intensity of the light and is given by: + 15V VOUT = I P x RF CF = ( P x R ) RF 0.1 F RF FREQUENCY RESPONSE (PHOTODIODE /AMPLIFIER COMBINATION) 100K 2 7 1 5 Op- Am p D etector 6 V OU T + 8 3 4 f 3 dB = 0.1 F PV The frequency response of the photodiode / amplifier combination is determined by the characteristics of the photodetector, pre-amplifier as well as the feedback resistor (RF) and feedback capacitor (CF). For a known gain, (RF), the 3 dB frequency response of the detector / pre-amp combination is given by: PC 1 2 p CF RF -15V UDT- 455 , 4 5 5HS UDT-555 , 5 55 UV , 05 5UV However, the desired frequency response is limited by the Gain Bandwidth Product (GBP) of the op-amp. In order to have a stable output, the values of the RF and CF must be chosen such that the 3 dB frequency response of the detector / pre-amp combination, be less than the maximum frequency of the op-amp, i.e. f3dB fmax. +15V 0.1 F CF RF f max = 100K 5 7 4 12 3 GBP 2 p RF (CF + C J + C A ) Op-Amp Detector V OUT 11 where CA is the amplifier input capacitance. + 9 6 10 8 0.1 F PV In conclusion, an example for frequency response calculations, is given below. Case Ground For a gain of 108, an operating frequency of 100 Hz, and an op-amp with GBP of 5 MHZ: PC -15V UDT-020D, 020UV CF = +15V 1 2 p f3dB RF = 15.9 pF 0.1 F Thus, for CF = 15.9 pF, CJ = 15 pF and CA = 7 pF, fmax is about 14.5 kHz. Hence, the circuit is stable since f3dB fmax. CF 2 RF 7 For more detailed application specific discussions and further reading, refer to the APPLICATION NOTES INDEX in the catalog. Op-Amp Detector 6 V OUT + 8 3 1 5 4 100K PV 0.1 F PC UDT-451, 455LN, 455UV/LN UDT-555UV/LN 3 UDT Sensors Inc. Note: The shaded boxes represent the Photop (TM) components and their connections. The components outside the boxes are typical recommended connections and components. -15V Phone: 310-978-0516 Fax: 310-644-1727 http:\\www.udt.com