What are Circuits from the Lab® Reference Designs?
Analog Devices (ADI) 's Circuits from the Lab ® reference designs are all design information, software, etc. Of course, it is a solution that also includes a performance evaluation report.
Circuits from the Lab (CFTL) contributes to the performance review and time/cost reduction of our customers' projects, just like our prototype boards and evaluation reports.
The Circuits from the Lab reference design provides the following materials:
- Comprehensive documentation including performance evaluation
- All design data including BOM, Gerber data and software
- Factory tested hardware
This article presents a reference design for a water quality measurement system.
Features of CN0428 Water Quality Measurement System
Electrochemical sensing for liquid analytical measurements such as pH requires the design of an analog front end for each sensor. On the other hand, there is a growing need to acquire information on multiple parameters in real time in the market.
The CN0428 Water Quality Measurement System is a complete measurement platform that meets the size, cost, and power requirements of a sensor installation. The circuit is small enough to be mounted on the back of the sensor and works with a wide variety of sensor types. In addition, integrated measurement functions are available to improve the reliability of primary measurements. In addition, the circuit also has the ability to perform health checks that can reduce system maintenance costs.
In this article, we will discuss three key features of the CN0428 water measurement system:
- Interposer board allows measurement with up to 4 sensors
- Multiple electrochemical parameters can be measured by firmware selection
- Uses microcontroller with integrated precision analog front-end for electrochemical sensors
1. Interposer board allows multiple parameter measurements on up to 4 shields
The CN0428 Water Quality Measurement System consists of the following boards:
- EVAL-CN0428-EBZ: Sensor board
- EVAL-M355-ARDZ-INT: Arduino Compatible Interposer
- EVAL-ADICUP3029: Arduino Compatible Form Factor
EVAL-M355-ARDZ-INT can operate up to 4 sensor boards simultaneously.
EVAL-ADICUP3029 adopts ADI's Arm® Cortex®-M3 ultra-low power MCU ADuCM3029 and CrossCore Embedded Studio, an open source Eclipse-based development environment. CrossCore Embedded Studio includes many example hardware and software projects, making it easy to prototype and develop connected systems and solutions for IoT applications.
2. Measurement of multiple electrochemical parameters by firmware selection
The CN0428 water quality measurement system supports the following measurement methods by selecting firmware.
- Electrochemical Impedance Spectroscopy (EIS)
- Current measurement
- Multi-step amperometry (MA)
- Chronoamperometry
- Pulse amperometry (PAD)
- Fast current measurement (FAM)
- Zero resistance ammeter (ZRA)
- voltammetry
- Linear sweep voltammetry (LSV)
- Differential Pulse Potentiometer (DPV)
- Square wave voltammetry (SWV)
- Normal pulse voltammetry (NPV)
- AC voltammetry (ACV)
- Cyclic voltammetry (CV)
3. Uses a microcontroller with integrated high-precision analog front-end for electrochemical sensors
The CN0428 water quality measurement system uses ADI's integrated analog front-end microcontroller and precision amplifier for electrochemical sensors. With the CN0428 Water Quality Measurement System, you can easily test the functions and characteristics of these high-performance devices.
- ADUCM355: Precision Analog Microcontroller with Chemical Sensor Interface
- LTC6078: Low Input Bias Current Amplifier
Various data of CN0428 water quality measurement system can be downloaded from here.
Application example
- Instrumentation equipment
- scientific instruments
- process monitoring
- Liquid analysis and water quality measurement in food and beverage, power generation, drinking water, wastewater treatment, etc.
Product Summary
ADUCM355 Product Overview
product name | ADUCM355 |
Features |
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LTC6078 Product Brief
product name | LTC6078 |
Features |
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Ultra-low power consumption is the biggest attraction Arm® Cortex®-M3 MCU ADuCM3029
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EVAL-CN0428-EBZ Product information (Various data of CN0428 water quality measurement system can be downloaded from here)
EVAL-M355-ARDZ-INT product information
EVAL-ADICUP3029 Product Information