Highest SNR PDA Mini-Spectrometer

VS70-PDA OEM Mini-Photodiode Array Spectrometer

Available for US OEM customers only

High-performance fiber optic spectrometer for OEM volumes

  • UV-VIS (200–860 nm), VIS (380–750 nm), or UV-NIR (200–1050 nm)
  • Colossal full well (100 Me to 1 Ge )
  • Low noise (2.6 counts)
  • High UV sensitivity
  • High throughput (f/2.8)
  • Ultra-low stray light
  • Ideal for industrial bright-light applications such as emission, absorbance, reflectance
Segment: Scientific
Manufacturing Company: HORIBA Scientific
FeatureSpectroscopy Benefits for OEMs
Most popular UV-VIS rangeExcellent peak symmetry in a miniature grating spectrometer
High readout speed3.5 ms maximum readout speed
Advanced electronicsLow noise, Multi-Acq (streaming data through USB for improved speed)
PDA (Linear photodiode array)More than 100 times deeper full well than any CCD mini-spectrometer
High signal-to-noise ratioMore than 10 times the S/N of any uncooled CCD mini-spectrometer
USB 2.0 high and full-speedStandard connection interfaces to PCs with 100% data integrity
Order-sorting filterEliminates second-order interference
Windows® acquisition software
and LabVIEW™ VIs and DLLs
Software to integrate VS70 as an OEM component
Sturdy single-optic designExcellent light purity, with concave grating design
No moving parts or shutterExcellent reliability for OEM integration

Concave-grating mini-spectrometer for

  • UV-VIS
  • VIS
  • UV-NIR


This VS70-PDA system for industrial applications uses a modified VS70 optical engine optimized for UV-VIS and a linear photodiode array.

Available for US OEM customers only

Spectral coverage OptionUV-VIS: (200–860 nm), 250 nm optimized grating, built-in order-sorting filter
VIS:(380–750 nm), VIS-blazed grating, built-in long-pass fi lter
UV-NIR:(200–1050 nm), dual-blaze grating, built-in order-sorting filter
Numerical aperturef/2.8
Stray light rejection
Typical (Maximum)
0.01% (0.02%) for UV-VIS configuration with 500
µm tall PDA, measured at 700 nm
(measured with broad bandpass 510 nm filter, 75 µm slit-width)
>2.4 AU linear range (5% variation) with caffeine 273 nm absorption peak in 10 mm cuvette and D2 lamp.
PDA detector responseHigh UV sensitivity. Response range from 200nm to 1000nm
Detector height
Fiber-optic option
500 µm PDA height standard (2.5 mm optional);
600 µm dia., 1.5 m long fiber-optic;
or special bundle
Thermoelectric stabilizationNone. Dark current and PDA-pattern noise must be subtracted. User must switch off light source or install manual shutter in optical path.
Spectral resolution
Pixel resolution
Slit (factory configuration)
UV-VIS: 75µm slit, 1024 pixels, 2.7 nm resolution on 500 µm tall PDA;
0.33 nm/pixel (can be customized for 512 pixels)
Available slits: 12-25-37-50-62-75-100-125-150-200 µm (contact us for other gratings)
Improved PDA full well 100 Me (1 Geoptional)
Typical dynamic range26 000:1
A/D converter16 bit, 500 kHz
Typical Dark current0.16 count/ms at 20°C (room temperature); typical offset = 300 counts
Typical readout noise2.6 counts (3900 e); maximum = 3.5 counts
Readout speedMulti-acquisition: 3.5 ms; 285 spectra/s   Single acquisition: 10 ms; 100 spectra/s (with 0 exposure time)
Typical signal-to-noise ratio10 000:1
Gain selection1500 e/count
Dimensions (H × W × D)4.6” × 4.3” × 2.9” (117 mm × 109 mm × 73.7 mm)
Weight1.8 lb (0.82 kg)

*Specifications, form factor, and spectrometer cover subject to change without notice.

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