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