CN0326 Datasheet, PDF (7/7 Pages) Analog Devices – Devices Connected

Circuit Note
Test
Agilent E3631A and Yokogawa GS200 precision voltage supplies
were used to simulate the sensor output. The negative terminal
of the Yokogawa is connected to the negative terminal of the
ADC for the pH sensor. The positive terminal is in series with
the resistor, which is connected to the positive terminal of the
ADC as shown in Figure 8. The Yokogawa generates the
±420 mV, which then simulates the pH sensor output, and the
series resistor is then varied to simulate the impedance of the
glass electrode of the pH probe as shown in Figure 8.
The CN-0326 Evaluation Software is used to capture the data
from the EVAL-CN0326-PMDZ circuit board using the setup
seen in Figure 8.
Details regarding the use of the software can be found in the
CN-0326 Software User Guide.
LEARN MORE
CN-0326 Design Support Package:
www.analog.com/CN0326-DesignSupport
MT-004 Tutorial, The Good, the Bad, and the Ugly Aspects of
ADC Input Noise—Is No Noise Good Noise? Analog Devices.
MT-022 Tutorial, ADC Architectures III: Sigma-Delta ADC
Basics, Analog Devices.
MT-023 Tutorial, ADC Architectures IV: Sigma-Delta ADC
Advanced Concepts and Applications, Analog Devices.
MT-031 Tutorial, Grounding Data Converters and Solving the
Mystery of "AGND" and "DGND", Analog Devices.
MT-035 Tutorial, Op Amp Inputs, Outputs, Single-Supply, and
Rail-to-Rail Issues. Analog Devices.
MT-037 Tutorial, Op Amp Input Offset Voltage.
MT-038 Tutorial, Op Amp Input Bias Current
MT-040 Tutorial, Op Amp Input Impedance
MT-095 Tutorial, EMI, RFI, and Shielding Concepts
MT-101 Tutorial, Decoupling Techniques, Analog Devices
Kester, Walt. 1999. High Impedance Sensors. Section 5. Analog
Devices.
CN-0326
Kester, Walt. 1999. Temperature Sensors. Section 7. Analog
Devices.
Chen, Baoxing. 2006. iCoupler® Products with isoPower®
Technology: Signal and Power Transfer Across Isolation Barrier
Using Microtransformers. Analog Devices.
Wayne, Scott. 2005. “iCoupler® Digital Isolators Protect RS-232,
RS-485, and CAN Buses in Industrial, Instrumentation, and
Computer Applications.” Analog Dialogue, Volume 39. Analog
Devices (October).
Brian Kennedy and Mark Cantrell, Recommendations for
Control of Radiated Emissions with iCoupler Devices,
Application Note AN-1109, Analog Devices.
pH Theory and Practice, Radiometer Analytical, SAS,
Villeurbanne Cedex, France.
Data Sheets and Evaluation Boards
AD7793 Data Sheet
AD7793 Evaluation Board
ADUM5401 Data Sheet
ADuM5401 Evaluation Board
AD8603 Data Sheet
REVISION HISTORY
9/13—Revision 0: Initial Version
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