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CN0272 Software User Guide
Overview
CN0272 is a high-speed photodiode signal conditioning circuit with dark current compensation. The system converts current from a high-speed silicon PIN photodiode and drives the inputs of a 20 MSPS ADC. This combination of parts offers spectral sensitivity from 400 nm to 1050 nm with 49 nA of photocurrent sensitivity, a dynamic range of 91 dB and 2 MHz of bandwidth. The signal conditioning circuitry of the system consumes only 40 mA of current from the ±5 V supplies making this configuration suitable for portable high-speed high-resolution light intensity applications such as pulse oximetry.
Other suitable applications for this circuit would be as an analog opto-isolator. It can also be adapted to applications that require larger bandwidth and less resolution such as adaptive speed control systems.
This user guide will discuss how to use the evaluation software to collect data from the EVAL-CN0272-SDPZ Daughter Board
Required Equipment
General Setup
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The
EVAL-SDP-CB1Z SDP-B Board connects to the PC via the
USB cable.
Step-by-Step Instructions for Installing the Software
Extract the files within the file
CN0272 SDP Eval Software.zip and open the file
setup.exe.<html><br><br></html>
NOTE: It is recommended that you install the CN0272 SDP Evaluation Software to the default directory path C:\Program Files\Analog Devices\CN0272\ and all National Instruments products to C:\Program Files\National Instruments\
<html><br><br><br><br><br></html>
Click
Next to view the installation review page<html><br><br></html>
<html><br><br></html>
Click
Next to start the installation<html><br><br></html>
<html><br><br></html>
Upon completion of the installation of the
CN0272 SDP Eval Software, the installer for the
ADI SDP Drivers will execute.<html><br><br></html>
NOTE: It is recommended that you close all other applications before clicking “Next”. This will make it possible to update relevant system files without having to reboot your computer.
<html><br><br></html><html><br><br></html>
Press
“Next” to set the installation location for the
SDP Drivers.<html><br><br></html>
It is recommended that you install the drivers to the default directory path <html><br></html>C:\Program Files\Analog Devices\SDP\Drivers
<html><br><br></html>
Press
“Next” to install the
SDP Drivers and complete the installation of all software. Click
“Finish” when done.<html><br><br></html>
Step-by-Step Instructions for Connecting the Hardware
Place two batteries into the connector on the bottom of the
EVAL-CN0272-SDPZ board, ensure the batteries are size triple A and are the correct polarity.
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Plug the mini end of the
USB cable into connector J2 of the
EVAL-SDP-CB1Z. And connect the other end of the
USB cable into the Laptop or PC.
Opening and Enabling the Evaluation Software
Launch the executable found at C:\Program Files\Analog Devices\CN0272 and press the “Connect“ button.
After pressing the “Connect” button, a prompt will appear informing the user if the accelerometer was properly configured. Press “Ok” and the software is ready to use. If the accelerometer is not configured properly, disconnect the entire setup and start over.
Step by Step Instruction to Using the Evaluation Software
The following is a list of all available software controls, grouped according to their location in the software:
Control Set 1
Individual Control 1 – Description of Control 1
Individual Control 2 – Description of Control 2
Control Set 2
Individual Control 1 – Description of Control 1
Individual Control 2 – Description of Control 2