Data Sheet
Qmini AFBR-S20M2XX
Miniature Spectrometer with Onboard Processing
for Mobile Applications and Industrial Integration
Overview
Within an amazingly small design, the Qmini delivers technical
specifications that are unprecedented at this size. Its compact design
enables tight integration in applications where space is limited, like mobile
analysis devices. The Qmini includes a powerful electronics board that
enables:
• Full processing of spectra in the device (offset, nonlinearity, dark
spectrum, and spectral sensitivity)
• Averaging and smoothing
• Binning and buffering of spectra
The Qmini also features a replaceable entrance slit, reduced stray light, and
lower power consumption.
Part Number
AFBR-S20M2UV
AFBR-S20M2VI
AFBR-S20M2NI
AFBR-S20M2WU
AFBR-S20M2WV
AFBR-S20M2VN
Specifications
Focal length
Grating
Entrance slit
Dynamic range
Numerical aperture
Stray light
Exposure time range
Detector
A/D converter
Calibration
Internal memory
Transfer speed to PC
Optical Interface
Digital interfaces
Dimensions
Weight
Operating temperature
Storage temperature
Power consumption
PC operating system
50 mm
300 or 600 lines/mm
20 μm (changeable)
1300:1
0.1
<0.1 %
3 μs to 600s
2500-pixel linear CCD sensor
16-bit
Wavelength, sensitivity, nonlinearity, and multiple dark spectra
stored in device
32 MB (>3000 spectra)
USB 2.0 High-Speed
SMA connector
USB 2.0 with Type-C connector, SPI, UART
64.0 mm × 42.0 mm × 14.5 mm
60g
−15°C to 60°C (non-condensing)
−25°C to 70°C
5V DC, up to 130 mA
Windows 10, 8, 7, Vista, XP
Product Configuration
Qmini UV
Qmini VIS
Qmini NIR
Qmini Wide UV
Qmini Wide VIS
Qmini VIS/NIR
Wavelength Range
220 nm to 400 nm
370 nm to 750 nm
730 nm to 1080 nm
225 nm to 1000 nm
225 nm to 1000 nm
480 nm to 1100 nm
Spectral Resolution
0.3 nm
0.7 nm
0.7 nm
1.5 nm
1.5 nm
1.5 nm
Key Features
• Spectral resolution from 0.3 nm
• Miniature size
• Customizable wavelength range,
sensitivity, and resolution
• Powerful onboard processing and
evaluation
Applications
• Color measurement
• Chemical analysis
• Quality control
• System integration
• Counterfeit detection
• Environmental analysis
• Biomedical applications
• Light analysis
• Process control and monitoring
Broadcom Spectroscopy
Data Sheet
Application Software
Every Qmini spectrometer includes
Waves user software developed
for general-purpose spectroscopy
applications. Waves includes
sophisticated algorithms for data
acquisition and evaluation, which
provides the following features
through a clear and straightforward
user interface.
• Take and display series of spectra
• Automatic exposure control with
dark spectrum interpolation
• Import most ASCII-based file
formats
• Export as ASCII table to almost
any numerical analysis software
• Comprehensive tools for
displaying and analyzing spectra
• Strip charts for comparing
characteristic values between
multiple spectra including peak
follower in real time
• Graph printing and export to PDF
• Dynamic peak finder (no need to
set a threshold level)
• Dark spectrum interpolation
• Transmission, absorption, and
reflection measurements
• Colorimetry
Waves is very easy to use and
very intuitive. Various spectrum
evaluation options are available
with minimal effort and only a
few mouse clicks. For example, to
zoom in, adjust the zoom slider. To
move around, adjust the scrollbar.
To change the x-axis unit, select
the corresponding button. Values
such as peaks or colorimetry are
instantly calculated as soon as
a spectrum is taken. Waves is
available as a free download from
our website.
Software Library
A software development kit (SDK)
is also included to control the
spectrometer and take spectra
from your own software. It consists
of a Windows DLL library for the
.NET framework, documentation,
and sample code. The SDK can
be used with any programming
language that can use .NET DLLs,
including C#, Visual Basic .NET,
C++, Delphi, LabVIEW, Matlab, and
Mathematica.
I/O Port
The Qmini includes a new auxiliary
connector for analog and digital
I/O, communication interfaces and
power supply (if USB is not used).
The eight digital channels can be
configured as trigger input, shutter
or flash lamp control, process
control, or general purpose I/O
pins.
The Qmini supports three trigger
modes: software trigger, interval
trigger, and external trigger. It can
be set to trigger on the start or the
end of the exposure period.
Communication Protocol
The spectrometer can also
be directly controlled from an
embedded microcontroller or
other operating systems using the
device communication protocol.
Just like our application software,
the protocol is designed to be
both powerful and easy to use for
software developers.
Qmini Schematic Drawing
6.75
2.55
6.5
17.85
34.35
42
39.5
35.5
2.5
52
64
1.5
5
3.5
7.75
9.5
For more product information:
broadcom.com
Copyright © 2018 Broadcom. All Rights Reserved. Broadcom, the pulse logo, and Connecting everything are among the
trademarks of Broadcom. The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
AFBR-S20M2XX-DS100 July 27, 2018
9.75
60.4
MCU
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