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The CMC Electronics 264-339835 Series is an InGaAs Avalanche Photodiode Preamplifier Module designed for demanding sensing applications requiring optimum signal-to-noise performance. It features a 200 µm InGaAs APD coupled to a GaAs FET input transimpedance amplifier (TIA) within a hermetically sealed TO-8 package.
This module incorporates an integrated thermoelectric cooler (TEC) for temperature control of the APD, aiding in gain stabilization and optimized sensitivity. An embedded thermal sensor allows for internal temperature monitoring. The amplifier includes overload input protection with fast recovery.
Key electrical characteristics include a spectral response from 1050 to 1600 nm, a low k-factor of 0.2, and a 1 MHz preamplifier bandwidth. The output impedance is 10 Ω, and the module can be AC- or DC-coupled. Customizations for bandwidth, NEP, and responsivity are available upon request.
Applications for this module include fluorescence, instrumentation, and remote sensing. Its high sensitivity and signal-to-noise performance make it suitable for advanced detection systems.
The spectral response ranges from 1050 to 1600 nm.
The preamplifier has a bandwidth of 1 MHz.
The output impedance is 10 Ω.
The NEP at 25°C and 1570 nm is 30 fW/√Hz.
The operating voltage (VOP) is between 40 V and 85 V.
The module is supplied in a hermetically sealed TO-8 package.