Texas Instruments DLP NIRscan EVM, Руководство пользователя

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8 DLPU016C – April 2014 – Revised April 2019
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DLP NIRscan Evaluation Module Overview
Chapter 1
DLPU016C – April 2014 – Revised April 2019
DLP NIRscan Evaluation Module Overview
1.1 Introduction
The DLP
®
NIRscan™ EVM is a complete evaluation module (EVM) to design a high performance,
affordable near-infrared spectrometer. This flexible tool contains everything a designer needs to start
developing a DLP-based spectrometer right out of the box. The EVM features the DLP 0.45 WXGA NIR
chipset. It is the first DLP chipset optimized for use with near-infrared (NIR) light. With DLP technology,
spectrometers for use in the food, pharmaceutical, oil and gas and other emerging industries are able to
deliver lab performance levels in the factory and the field. This technology brings together a set of
components providing an efficient and compelling spectroscopy system solution for:
• Process analyzers
• Laboratory equipment
• Dedicated analyzers
The new DLP4500NIR DMD is optimized for operation at wavelengths between 700 nm and 2500 nm. The
DLP NIRscan EVM is one possible implementation of this new DLP technology, operating from 1350 nm
to 2450 nm.
1.2 What is in the DLP NIRscan EVM?
The DLP NIRscan EVM is a complete NIR spectrometer EVM using DLP technology. The EVM package
includes:
• Near infrared optomechanical spectrometer engine:
– Transmissive sample holder with broadband visible-to-infrared tungsten-halogen lamp
– 25-µm input slit
– Collimating lenses
– 1300 to 2500 nm bandpass filter
– Reflective diffraction grating
– Focusing lens
– DLP4500NIR DMD (.45-inch WXGA, 912 × 1140 diamond pixels, NIR optimized)
– Collection optics
– 2-mm single-pixel, cooled InGaAs detector
• Electronics subsystem with the electronics consisting of five boards:
– Spectro board
• DLPC350 controller ASIC
• Sitara™ processor (AM3358) for system control and analysis
• Power management circuits
• Connectivity through Ethernet and USB
• Non-volatile eMMC flash memory
• Micro SD card slot for external programming
• Open source Linux web-server application software
– Detector board
• 2-mm, single-pixel cooled InGaAs detector with TEC and thermistor
• Low-noise differential amplifier circuit