ATX´s new spectraprocessor SDC is the first device combining
an optical bench (flat field imaging spectrograph) with the read out/ processing
electronics in a small dual in line 24 pin housing. Therefore it can be used
like a standard electronic IC with an optical input. The data access takes place
similarly to a memory device (e.g. RAM).
Description
internal storage of wavelength - pixel relation
storage of reference data
preprocessing of data, dark signal correction,
absolute calibration
internal calculations like averaging, interpolation,
transmission, reflexion, absorption, color-coordinates
Interfaces
serial interface (SPI)
parallel 8bit interface
simple UART
busy output
power down input
external trigger-input
Applications
mobile spectrometric measurement equipment
colorimeter
spectroradiometer
analytical instrumentation
multichannel spectrometric systems
Advantages
·
easy to implement in customer specific
designs
·
processing of spectral calculations
·
customer specific algorithms can be implemented
·
simple multichannel
arrangement
Specifications
Applications
Single and multichannel spectral
measuremen
Optical
parameters
Spectral range
380 nm ... 760 nm (optional 250 nm ... 500
nm) Other spectral ranges on request
Optical resolution>
9 nm FWHM (others on request)
Optical Input
Optical fiber, 100 µm core diameter, ST (optional
SMA) terminated
Spectral resolution
9 nm (6 nm with 50 µm fiber) FWHM
Digital spectral resolution
4.1 nm
Wavelength accuracy
± 1nm (ASTM E275, filter BG 20, 2 mm, at 528.7 nm/
684.3 nm)
Wavelength reproducibility
± 0.1 nm (ASTM E275, filter BG 20, 2 mm, at 528.7nm/
684.3 nm)
Stray light
< 10-3 (ASTM E387, GG 495, 2 mm, at 430
nm)
Sensitivity
typ. 1.3 × 1014 counts/Ws (550 nm)
Spectrometer Grating Detector
Holographic, flat field Photodiode
array
Electronical
parameters
Digital resolution
16 or 14 bit
Electronic noise
2 LSB
Integration time
4 ... 65000 ms
Power supply
5V ±5%, 100mA (5mA in power down mode)
Interfaces
serial interface (SPI) parallel 8bit
interface UART (TTL-level)
