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PDA015A(/M)
Si Amplified Detector

User Guide

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Summary of Contents for PDA015AM

Page 1: ...PDA015A M Si Amplified Detector User Guide ...

Page 2: ...d Dark Current 8 5 3 Transimpedance and Conversion Gain 9 Chapter 6 Troubleshooting 10 Chapter 7 Specifications 11 7 1 Responsivity 13 7 2 Temporal Response 13 7 3 Frequency Response 14 7 4 Electrical Return Loss 15 7 5 Noise Spectrum 15 7 6 Noise Equivalent Power NEP 16 7 7 Mechanical Drawing 17 Chapter 8 Certificate of Compliance 18 Chapter 9 Regulatory 19 9 1 Waste Treatment is Your Own Respons...

Page 3: ...ct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or Chassis Terminal Equipotentiality On Supply Off Supply In Position of a Bi Stable Push Control Out Position of a Bi Stable Push Control Caution Risk of Electric Shock Caution Hot Surface Caution Risk of Danger Warning Laser Radiation Caution Spinning Blades May Cause Harm...

Page 4: ... uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation Thorlabs is not responsible for any radio television interference caused by modifications of this equipment or the substitution or attachment ...

Page 5: ...side this instrument are ESD sensitive Take all appropriate precautions to discharge personnel and equipment before making any electrical connections to the unit LASER WARNING When working with radiation sources that may be hazardous follow manufacturers recommendation for eye or skin protection ...

Page 6: ...readed 1 035 40 accessories The housing also accommodates Thorlabs SM05 threaded 0 535 40 series of adapters and accessories This allows convenient mounting of external optics light filters and apertures as well as providing an easy mounting mechanism using Thorlabs cage assembly accessories Versions with imperial or metric tapped mounting holes the PDA015A and PDA015A M respectively are available...

Page 7: ...upply into mains power 4 Attach a 50 Ω BNC type coaxial cable i e RG 58U to the output of the PDA For best performance we recommend terminating the cable with a 50 Ω load at the measurement instrument If the instrument has a high impedance input then adding an external 50 Ω load resistor may be an option Do not add an external 50 Ω resistor if the instrument has an internal 50 Ω termination as the...

Page 8: ...aturation If necessary use external neutral density filters to reduce the input light level CAUTION The PDA015A was designed to allow maximum accessibility to the photodetector by having the front surface of the PD TO can nearly flush with the outside of the PDA housing When using fiber adapters make sure that the fiber ferrule does not crash into the TO can window Failure to do so may cause damag...

Page 9: ...r high impedance external load depending on the situation Figure 2 Block Diagram of the PDA015A Amplified Si Photodetector 5 2 Responsivity and Dark Current The responsivity of a photodiode can be defined as a ratio of generated photocurrent IPD to the incident light power P at a given wavelength in units of A W λ The dark current is defined as the current from the photodiode when no light is appl...

Page 10: ...oad at maximum bandwidth to avoid saturation This is limited by the maximum slew rate of the amplifier Larger linear swing can be achieved when not running at maximum bandwidth For best signal integrity we recommend using a 50 Ω coaxial cable with a 50 Ω terminating resistor at the output end of the cable This will minimize ringing by matching the cable with its characteristic impedance If more ou...

Page 11: ...rify that the optical signal wavelength is within the specified wavelength range Verify that the optical signal is illuminating the detector active area Output Voltage will not increase Detector Output is distorted Check to make sure the detector is not saturated Refer to the Output Voltage spec in the Specifications table Be sure that no stray or unwanted light is entering the detector Install a ...

Page 12: ...P λ p c 36 pW Hz DC 380MHz Output Noise RMS c 8 mVRMS DC 380MHz Output Current Max IOUT 100 mA Output Dark Offset 20 mV Load Impedance 50 Ω to Hi Z Transimpedance Gain Hi Z Load 5x104 V A 50 Ω Load 2 5x104 V A Output Voltage VOUT 0 to 5 V 50 Ω 0 to 10 V Hi Z Linear Outputd Max 3 V 50 Ω 6 V Hi Z Output Slew Rate Max 2 5 V ns 50 Ω 5 V ns Hi Z a All performance specifications are typical and assume a...

Page 13: ...PD Surface Deptha 0 17 4 4 mm Weight Detector Only 0 15 lbs Accessories SM1T1 Coupler SM1RR Retainer Ring Operating Temp 10 to 40 C Storage Temp 25 to 70 C AC DC Power Supply LDS1212 DC Output 12 0 V 0 25 A 12 0 V 0 25 A Input Voltage 115 230 VAC Switch Selectable Output Regulation 5 Measured at Output Connector Output Power Rated 6 W Max Input Current 0 95 A 115 VAC 1 05 A 230 VAC Input Frequency...

Page 14: ...mplified Photodetectors Chapter 7 Specifications Rev B May 22 2017 Page 13 7 1 Responsivity Figure 3 Typical Responsivity of the PDA015A 7 2 Temporal Response Figure 4 Typical Impuse Response of the PDA015A ...

Page 15: ...Si Amplified Photodetectors Chapter 7 Specifications Page 14 TTN112567 D02 Figure 5 Typical Step response of the PDA015A 7 3 Frequency Response Figure 6 Typical Frequency Response of the PDA015A ...

Page 16: ...ifications Rev B May 22 2017 Page 15 7 4 Electrical Return Loss Figure 7 Typical Electrical Return Loss of the PDA015A 7 5 Noise Spectrum Figure 8 Typical Noise Spectrum for the PDA015A Measured with a 50 Ω Load and 900 kHz Resolution Bandwidth ...

Page 17: ...uency value and then dividing by the square root of that bandwidth The NEP gives the amount of input power required to match the output noise level The actual output noise level in mVRMS can be calculated by multiplying the data in this graph by the conversion gain and the square root of the bandwidth Figure 9 Typical NEP for the PDA015A at the Maximum Responsivity Wavelength Measured with a 50 Ω ...

Page 18: ... mm 0 50 21 1 mm 0 83 4 4 mm 0 17 Output BNC Power Indicator LED Power Supply Connection 12 VDC 200 mA Included SM1T1 Threaded Coupler and SM1RR Retaining Ring 19 1 mm 0 75 26 4 mm 1 04 Power Switch 20 1 mm 0 79 70 2 mm 2 76 43 2 mm 1 70 53 3 mm 2 10 26 4 mm 1 04 48 0 mm 1 89 Detector Surface 15 2 mm 0 60 8 32 x 0 25 Thread M4 x 0 7 x 6 35 mm for PDA015A M 2 Places ...

Page 19: ...Si Amplified Photodetectors Chapter 8 Certificate of Compliance Page 18 TTN112567 D02 Chapter 8 Certificate of Compliance ...

Page 20: ...horlabs products such as Pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards Components Mechanics and optics Left over parts of units disassembled by the user PCB s housings etc If you wish to return a Thorlabs unit for waste recovery please contact Thorlabs or your nearest dealer for further information 9 1 Waste Treatment is Your Own Responsibil...

Page 21: ...a and South America Thorlabs Inc sales thorlabs com le techsupport thorlabs com Europe Thorlabs GmbH europe thorlabs com France Thorlabs SAS SA sales fr thorlabs com Japan Thorlabs Japan Inc sales thorlabs jp UK and Ireland Thorlabs Ltd sales uk thorlabs com techsupport uk thorlabs com Scandinavia Thorlabs Sweden AB scandinavia thorlabs com Brazil Thorlabs Vendas de Fotônicos Ltda brasil thorlabs ...

Page 22: ...www thorlabs com ...

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