Part Details for AD8500 by Analog Devices Inc
Overview of AD8500 by Analog Devices Inc
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Part Details for AD8500
AD8500 CAD Models
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AD8500
Analog Devices Inc
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AD8500
Analog Devices Inc
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Samacsys Manufacturer | Analog Devices |
Resources and Additional Insights for AD8500
Reference Designs related to AD8500
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CN0397 - Ultralow Power Light Recognition System for Smart Agriculture
This circuit uses three photodiodes that are sensitive to different wavelengths (red, green, and blue), to measure light intensity levels over the light spectrum where plants are photosynthetically active. The measured results can be used to optimize the light source to match the requirements of the specific plants, enhance the growth rate, and minimize energy losses.<p>This circuit uses three precision current to voltage conversion stages that drive a single-supply, low power, low noise, 16-bit, Σ-Δ analog-to-digital converter (ADC) with three differential inputs.<p>The circuit deviates from the traditional approach by eliminating all mechanical and optical components, and uses only electrical components to achieve the same goal.<p>The circuit consumes less than 10 mW typical, making it ideal for battery operated portable field applications.<p>The printed circuit board (PCB) is designed in an Arduino- compatible shield form factor and interfaces to the EVAL- ADICUP360 Arduino-compatible platform board for rapid prototyping.
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CN0357 - Low Noise, Single-Supply, Toxic Gas Detector, Using an Electrochemical Sensor with Programmable Gain TIA for Rapid Prototyping
This circuit is an electrochemical sensor measurement circuit. Electrochemical sensors work by allowing gas to diffuse into the sensor through a membrane and by interacting with the working electrode (WE). The sensor reference electrode (RE) provides feedback to Amplifier U2-A, which maintains a constant potential with the WE terminal by varying the voltage at the counter electrode (CE). The direction of the current at the WE terminal depends on whether the reaction occurring within the sensor is oxidation or reduction. In the case of a carbon monoxide sensor, oxidation takes place; therefore, the current flows into the working electrode, which requires the counter electrode to be at a negative voltage (typically 300 mV to 400 mV) with respect to the working electrode. The op amp driving the CE terminal should have an output voltage range of approximately ±1 V with respect to VREF to provide sufficient headroom for operation with different types of sensors (Alphasense Application Note AAN-105-03, Designing a Potentiostatic Circuit, Alphasense, Ltd.).