Terahertz Technologies Inc.Terahertz Technologies Inc.
(888) U.S.-OTDRS
TIA-525 DC to 125 MHz O/E Converter

The TIA-525 optical receiver is a convenient, easy to use O/E 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 fiber optic communications link is required. The unit conveniently mounts directly on the vertical input BNC connector of your oscilloscope, digitizer or other readout device.

Both Silicon and Indium-Gallium-Arsenide detectors are available to cover respectively the 400 to 1000 nm or the 900 to 1700 nm spectral regions. Gains are selectable and provide peak responsivity values of approximately 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-525 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. Fiber connector options include either ST or FC receptacles. An unmounted detector is optionally available so that the unit may be used with free space beams. Powered by an internal 9V Lithium battery, or its universal power supply, the TIA-525 is handy to use and store.

The ease of use and convienience of this instrument are matched only by the high performance-to-price ratio that is typical of products from Terahertz Technologies. It is also backed by our standard 2 year warranty and 30 day guarantee of satisfaction.

Capability to Drive 50 Ohm Output Loads
Operates from Battery or Line Power
DC to 125 MHz Analog Bandwidth
Low Noise - 3.0 pW/root-Hz
Silicon or InGaAs detectors
Selectable Gain Settings
Laser Alignment and Tuning
Plasma Physics Measurements
Field Service Testing and Troubleshooting
General Laboratory Testing of Optical Components
Ordering Information
TIA-525S-ST TIA525 O/E Converter with Silcon Detector and ST Connector
TIA-525S-FC TIA525 O/E Converter with Silcon Detector and FC Connector
TIA-525I-ST TIA525 O/E Converter with InGaAs Detector and ST Connector
TIA-525I-FC TIA525 O/E Converter with InGaAs Detector and FC Connector
TIA-525S-FS  Free Space TIA525 O/E Converter with InGaAs Detector
TIA-525I-FS Free Space TIA525 O/E Converter with InGaAs Detector

TIA-525 Specifications

Detector Type Silicon or InGaAs (TIA-525S, TIA-525I respectively)
Analog Signal Bandwidth (-3 dB) DC to 125 MHz (Tr = 1.4 K), DC to 35 MHz (Tr = 14 K)
Selectable Transimpedance settings 1.4 K Ohms, 14 K Ohms
Second Stage Gain Selections X 1 or X 10
Maximum Linear Input Power 1.2 mW
Max Input power without damage 10 mW
Spectral Response Silicon: 400 to 1000 nm, InGaAs: 850 to 1700 nm
Output Impedance 50 Ohms
Output Connector Male BNC
Fiber Optic Connector Specify FC or ST or Free-Space
Input Numerical Aperture 0.29
Inter-stage Coupling DC or AC (100 Hz Low Frequency Cutoff)
Output Offset Voltage +/- 0.1 Volt
Noise Level 3.0 pW/ root-Hz at peak responsivity
Maximum Output Voltage 4 V pk-pk, no load, 2 V pk-pk with 50 Ohm Load
Power Requirements 9 V Battery or supplied universal wall-mount power supply
Battery Life Approximately 30 hours, (no load)
Wall-mount Supply Power Requirements 95-260VAC, 50 - 60 Hz, 16 VA Max.
Mains Connectors Supplied North America, British, Continental Europe, Australian
Dimensions (mm) 63 L x 30.5 W x 32 H
Weight 5.6 oz (0.16 kg)
LED Annunciators Provided Power On
Operating Temperature Range 0° to 40°C
Standard Warranty

Two Years, Component and Workmanship

30 Day Satisfaction Guarantee

Accessories Supplied Transit Case, Universal Power Supply, 9V ULTRALIFE Lithium Battery, Manual

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