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SPAD MODULES
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SPAD modules C16531 series 1 ch SPAD module (for VIS to NIR region) The C16531 series is a photon counting module that can detect low-level light. These modules consist of a thermoelectric cooled single photon avalanche diode (SPAD), an amplifier, a comparator, a SPAD bias circuit, and a temperature controller. The photosensitive area is available in two sizes of ϕ50 μm and ϕ100 μm, and such small photosensitive areas offer a low dark count. These modules operate by simply connecting to an external power supply (±5 V). Single photon counting is possible. Low-light-level measurement High sensitivity in the long wavelength range Particle diameter measurement Fluorescence measurement Analytical instrument Structure Parameter Built-in photosensor Effective photoseinsitive area Absolute maximum ratings Parameter Supply voltage Operating temperature Storage temperature Symbol Vs Topr Tstg *1: When there is a temperature difference between a product and the surrounding area in high humidity environments, dew condensation may occur on the product surface. Dew condensation on the product may cause deterioration in characteristics and reliability. Note: xceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the E product within the absolute maximum ratings. Electrical and optical characteristics (Ta=25 °C, λ=630 nm, Vs=±5 V, unless otherwise noted) Parameter Spectral response range Peak sensitivity wavelength Chip temperature (setting temperature)*2 *3 Photon detection efficiency Dark count Afterpulse probability Comparator output Maximum count rate Positive power supply Current consumption Negative power supply *2: When the chip temperature strays from the setting temperature by 5 °C, cooling automatically stops, and signals are no longer output. *3: The setting temperature cannot be changed.

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Block diagram SPAD modules Recommended operating conditions Supply voltage*4 Parameter Positive power supply Negative power supply *4: A power supply with 1.5 A or higher output must be used. Block diagram SPAD bias circuit TE-cooled type SPAD Temperature controller Amplifier Digital output Connection example Connection example Using the supplied power cable, connect the SPAD module to a power supply. You can count output pulses by connecting the SPAD module to a frequency counter. Frequency counter Digital signal cable Light source Power cable (accessory) KACCC1167EA Photons SPAD module...

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SPAD modules Measurement example Comparator output hoton detection efficiency vs. wavelength GND Photon detection efficiency vs. wavelength (Typ. Ta=25 °C) Number of detected photons (cps) Photon detection efficiency (%) Linearity (typical example) C16531-050GD Number of incident photons (cps) KACCB0685EA

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SPAD modules Dimensional outline (unit: mm) Dimensional outline (unit: mm) Photosensitive area Power connector S5B-PH-K-S (J.S.T.MFG.) Light input window 9.5 Digital output connector (SMB connector) Tolerance unless otherwise noted: ±0.5 Weight: 230 g 40 ∙ Power cable ∙ Instruction manual

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SPAD modules Options (sold separately) Coaxial converter adapter A10613 series The A10613 series is a coaxial adapter that converts the SMB coaxial connector for signal-output on the photon counting module to a BNC or SMA coaxial connector. This adapter allows connecting a BNC or SMA cable to the photon counting module. Precautions ∙ For cleaning the product, wipe using a clean, soft, dry cloth. Do not use organic solvents such as thinner and acetone. ∙ Do not cover the unit with a dark cloth or something similar while the product is running. Covering the product can cause the internal...

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