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 Features
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125 MHz bandwidth |
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<3 pA/Hz1/2 RMS noise |
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1 KV/W to 100 KV/W selectable gain settings |
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InGaAs or Si detectors for use at all fibre optic
wavelengths |
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Powered by an internal battery |
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Capable of driving a 50 ohm load |
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AC or DC coupling |
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ST or FC connectors |
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Mounts on BNC input of an oscilloscope |
The TIA-525 optical receiver is a convenient, easy to
use optical to electrical converter. It is extremely useful in a variety of
laboratory and field service situations where a quick check of the operation of
a laser source, optical transmitter, or the output of a fibre optic
communications link is required.
The use of surface-mount construction techniques
permits the unit to be mounted directly on the vertical input BNC connector of
an oscilloscope, digitiser or lock-in amplifier. Simply energise the battery
powered unit and the optical signal presented to the fibre input port is
faithfully reproduced on the oscilloscope screen.
Both Silicon and Indium-Gallium-Arsenide detectors are
available to cover the 400 to 1000 nm or 900 to 1700 nm spectral regions
respectively.
Gains are switch selectable and provide peak
responsivity values of approx. 1000 to 100,000 volts per watt. AC coupling
between stages may be introduced in order to examine weak high frequency
optical signals in the presence of a strong DC optical component. The TIA-500
electrical bandwidth exceeds 125 MHz in the low and medium gain configurations
and exceeds 35 MHz in the highest gain configuration. The unit's output stage
is fully capable of driving a 50 ohm coaxial cable terminated in its
characteristic impedance.
Fibre connection options include ST or FC receptacles.
An unconnectorised detector is available as an additional option so that the
unit may be used with free space beams. Powered by an internal, readily
available, 9 V battery, the TIA-500 is handy to use and store. Its low noise
performance results from the use of a well shielded case plus its inherent
isolation from power lines and ground loops.
The ease of use and convenience of this instrument are
matched only by the high performance to price ratio. It is also backed by a two
year warranty.
Specifications
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Detector types: InGaAs (900-1700 nm) or Si (400-1000
nm) |
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Transimpedance ranges: 1.4K, 14K |
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Gain select: x1, x10 |
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Max. linear input power: >1.2 mW |
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Max. input power without damage: 10 mW |
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Bandwidth: 125 MHz at 1.4K transimpedance, 35 MHz at 14K
transimpedance |
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Output impedance: 50 ohms |
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Output connector: Male BNC |
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Fibre optic input connector: ST or FC |
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Input numerical aperture: 0.29 |
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Interstage coupling: AC or DC |
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Output offset voltage: +/- 1 V at max. gain |
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Max. output voltage: 4 V pk-pk, no load, 2 V pk-pk with 50
ohm load |
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Noise level: 3 pA/ Hz1/2 |
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Power required: 9 V battery powers the unit for approx. 30
hrs (no load) |
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Dimensions: 30.5 (W) x 63 (L) x 38 (H) mm |
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Weight: 150 gm |
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Limited warranty: 2 years from date of receipt |
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