EVAL-CN0372-PMDZ: Ultralow Power, 4-Channel Data Acquisition System and Energy Harvesting Circuit

Summary

The circuit shown on EVAL-CN0372-PMDZ is an ultralow power, multichannel data acquisition system that can be powered by a photovoltaic (PV) cell or thermoelectric generator (TEG). The circuit uses the a low power, multichannel, 12-bit successive approximation analog-to-digital converter (SAR ADC), the AD7091R-5, along with an efficient energy harvesting circuit based on the ADP5090 boost regulator. The ADC has a typical power consumption of 100 µW on a single 3V supply when sampling at 22 kSPS. Typical signal-to-noise ratio (SNR) is 68 dB for a 1 kHz input signal.

The low power consumption and small form factor make this combination of devices ideally suited for portable low power applications, particularly for wearable and self-powered devices.

Specifications

Manufacturer Analog Devices Inc.
Category Energy Harvesting
Sub-Category Solar to DC Regulators
Eval Board Part Number EVAL-CN0372-PMDZ-ND
Eval Board Supplier Analog Devices Inc.
Eval Board Normally In Stock
Application / Target Market Energy Harvesting
Voltage Out 3.5 V
Voltage In 0.8 ~ 3.3 V
Topology Step Up
Voltage Out Range - Fixed
Efficiency @ Conditions - Not Given
Current Out - Not Given
Current In 200 µA
Features ADC's for Sensor Reading
Current Limit (Adj. or Fixed)
I²C Interface
Open Circuit Protection
Over Charge Protection
Over Discharge Protection
Power Good Output
Shutdown, Enable, Standby
Design Author Analog Devices
Component Count + Extras 78 + 22
Main I.C. Base Part AD7091R-5
ADA4805-1
ADP1607
ADP5090
Date Created By Author 2015-09
Date Added To Library 2018-04

Eval Board

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