© 2019 Thorlabs GmbH
1 General Information
1
1 General Information
The PDA8A2 is a wideband, fixed-gain-amplified silicon detector designed for the detection of
light signals from DC to 50 MHz. A buffered output drives up to 1.8 V into 50 Ω input loads. The
PDA8A2 is sensitive to light within the wavelength range of 320 nm to 1000 nm. The ultra-low
noise design includes an active low-pass filter to prevent aliasing effects and to suppress out of
band noise effectively.
The PDA8A2 detector housing can be integrated in optical setups using convenient 8-32 and
M4 combi-thread mounting holes that are compatible with both imperial and metric threading.
The housing accommodates Thorlabs' SM05 (0.535"-40) and SM1 (1.025"-40) threaded adap-
ters and accessories. This allows convenient mounting of external optics, light filters, and aper-
tures. The product includes a SM1T1 SM1 Coupler Body which adapts the external thread to
an internal thread and holds the SM1RR Retaining Ring and a reusable protective plastic cover
cap. For accessories, please visit our
.
A ±12 VDC power supply is included with each amplified photodetector. The appropriate input
voltage (100 VAC, 120 VAC, 230 VAC) can be selected with a switch on the
.
Attention
Please find all safety information and warnings concerning this product in the chapter
in the Appendix.
1.1 Ordering Codes and Accessories
PDA8A2:
Silicon Amplified Photodetector, 320 - 1000 nm, Bandwidth Range DC-50 MHz, Ac-
tive Area Ø0.8 mm (0.5 mm²), Combi-Thread Mounting Holes Compatible with 8-32
and M4 Threads
Included Accessories
·
Power Supply (±12V, 0.2A), 100 VAC, 120 VAC or 230 VAC Line Voltage
·
(Item # SM1EC2B) on an included
Optional Accessories
·
PDA-C-72 DC power supply cable to PDA8A2: This cable has a connector on one end
and open wires at the other. The pin-out of the PDA8A2 DC power jack is shown in the
appendix of the full manual.
Please visit our homepage
for various accessories like fiber adapters,
posts and post holders, data sheets and further information.
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