FS320-DO

The FS320-DO is a silicon-based photodetector designed for precise optical detection over a broad wavelength range of 320–1100 nm. It incorporates a fixed-gain, low-noise transimpedance amplifier with a built-in 50 Ω load impedance, offering high-fidelity signal output for laboratory and OEM applications. With a rise time of 35 ns, a wide bandwidth up to 11 MHz, and low noise, the FS320-DO is ideal for applications in laser diagnostics, optical measurements, spectroscopy, and scientific research. Its integrated ±12 V stabilized power supply ensures reliable and stable operation in a compact form factor.

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Features
  • Broad spectral response: 320–1100 nm
  • Silicon (Si) photodetector
  • Fixed-gain, low-noise transimpedance amplifier
  • Built-in 50 Ω load impedance
  • Rise time: 35 ns
  • Bandwidth: DC – 11 MHz
  • High sensitivity with low noise
  • Integrated ±12 V stabilized voltage supply
  • Large sensitive area: 75.4 mm² (Φ9.8 mm)
  • Compact and easy-to-integrate design
Applications
  • Laser power and pulse monitoring
  • Optical signal detection
  • Spectroscopy and photonics research
  • Scientific instrumentation
  • Laser alignment and diagnostics
  • OEM optical systems
Specifications
Parameter Specification
Model FS320-DO
Wavelength range 320 – 1100 nm
Detector material Silicon (Si)
Sensitive area 75.4 mm² (Φ9.8 mm)
Rise time 35 ns
Bandwidth DC – 11 MHz
Noise Equivalent Power (NEP) 50 Ω load (6.10 kV/A)²
Gain 0.75 kV/A – 0.38 MV/A
Load impedance Built-in 50 Ω
Operating temperature 10 – 50 ℃
Power supply Integrated ±12 V stabilized supply