THORLABS PDA100A2 User Manual Download Page 4

Si Switchable Gain Detector

 

Chapter 2: Description 

Page 2 

TTN1134694-D02

 

Chapter 2  Description 

The  PDA100A2  is  an  amplified,  switchable-gain,  Silicon  (Si)  detector  designed 
for detection of light signals  ranging from 320 nm to 1100 nm. An eight-position 
rotary  switch  allows  the  user  to  vary  the  gain  in  10 dB  steps.  A  buffered  output 
drives  50  Ω  load  impedances  up  to  5  V.  The  PDA100A2  housing  includes  a 
removable  threaded  coupler  (SM1T1)  and  retainer  ring  (SM1RR)  that  is 
c

ompatible  with  any  number  of  Thorlabs  1”  threaded  accessories.  This  allows 

convenient  mounting  of  external  optics,  light  filters,  apertures,  as  well  as 
providing  an  easy  mounting  mechanism  using  Thorlabs

’  cage  assembly 

accessories. Also included is a ±12 V power supply. 

ESD Caution 

The components inside this instrument are ESD sensitive. Take all appropriate 
precautions to discharge personnel and equipment before making any electrical 
connections to the unit. 

 

Summary of Contents for PDA100A2

Page 1: ...PDA100A2 Si Switchable Gain Detector User Guide...

Page 2: ...1 Theory of Operation 4 4 2 Responsivity 4 4 3 Dark Current 4 4 4 Bandwidth and Response 5 4 5 Terminating Resistance 5 4 6 Gain Adjustment 5 Chapter 5 Troubleshooting 6 Chapter 6 Specifications 7 6...

Page 3: ...ymbol Description Direct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or Chassis Terminal Equipotentiality On Supply Off Su...

Page 4: ...to 5 V The PDA100A2 housing includes a removable threaded coupler SM1T1 and retainer ring SM1RR that is compatible with any number of Thorlabs 1 threaded accessories This allows convenient mounting of...

Page 5: ...ax with a 50 resistor Thorlabs p n T4119 for maximum performance Connect the remaining end to a measurement device such as an oscilloscope or high speed DAQ card Caution Many high speed oscilloscopes...

Page 6: ...d to a photodiode The PDA with Transimpedance Amplifier does control the dark current flowing out Looking at the figure above it can be noted that Point B is held at ground and the amplifier will try...

Page 7: ...gain so that the measured signal level out of the PDA100A2 is below 10 V 5 V with a 50 load to avoid saturation For low terminating resistors 5 k or 1 error an additional factor needs to be considere...

Page 8: ...ing a voltage measurement device Verify that the optical signal wavelength is within the specified wavelength range Verify that the optical signal is illuminating the detector active area Output Volta...

Page 9: ...29 V NEP p 7 17 x 10 11 W Hz NEP p 2 67 x 10 12 W Hz Offset 8 mV Typ 12 mV Max Offset 8 mV Typ 12 mV Max 10 dB Setting 50 dB Setting Gain Hi Z 4 75 x 103 V A 2 Gain Hi Z 4 75 x 105 V A 2 Gain 50 2 38...

Page 10: ...B Steps Output Voltage VOUT 0 to 5 V 50 0 to 10 V Hi Z General On Off Switch Slide Gain Switch 8 Position Rotary Output BNC DC Coupled Package Size 2 79 x 2 07 x 0 89 70 9 mm x 52 5 mm x 22 5 mm PD Su...

Page 11: ...Gain Detector Chapter 6 Specifications Rev D April 21 2020 Page 9 6 1 Response Curve 400 500 600 700 800 900 1000 300 1100 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 PDA100A2 Responsivity Responsivity A W W...

Page 12: ...Si Switchable Gain Detector Chapter 6 Specifications Page 10 TTN1134694 D02 6 2 Mechanical Drawing...

Page 13: ...Si Switchable Gain Detector Chapter 7 Certificate of Conformance Rev D April 21 2020 Page 11 Chapter 7 Certificate of Conformance...

Page 14: ...Thorlabs 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 b...

Page 15: ...tion USA Canada and South America Thorlabs Inc sales thorlabs com techsupport thorlabs com UK and Ireland Thorlabs Ltd sales uk thorlabs com techsupport uk thorlabs com Europe Thorlabs GmbH europe tho...

Page 16: ...www thorlabs com...

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