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HOME / PRODUCT CATEGORIES / CURRENT / SPARKFUN CURRENT SENSOR BREAKOUT - ACS723 (LOW CURRENT)
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SparkFun Current Sensor Breakout - ACS723
(Low Current)
SEN-14544
DESCRIPTION DOCUMENTS
The low current version of the SparkFun Current Sensor Breakout is a high
accuracy board that utilizes the ACS723 for low to moderate AC and DC current
sensing applications. The ACS723 sensor uses a Hall effect sensor to output a
voltage relative to the current flowing through the IP+ and IP- pins on the board.
The advantage of using a Hall effect sensor, specifically, is that the circuit being
sensed and the circuit reading the sensor are electrically isolated meaning that,
although your Arduino is running on 5V, the sensed circuit can be operating at
higher DC or AC voltages!
This low current sensor breakout is capable of sensing very small currents down
to around 10mA and large currents up to 5A! However, since the output is
analog, your usable readings will be limited by noise and the resolution of the
ADC reading the output. Additionally, this breakout has full electrical isolation of
measured and sensed circuits and (thanks to an on-board amp) can adjust its
sensitivity. Although the analog output is adjustable to 80kHz, the bandwidth on
the ACS723 Sensor Breakout width filter has been set to 20kHz to reduce noise
when using at high gains. The full 80KHz bandwidth that the sensor is capable
of can be recovered by closing the JP1 (Bandwidth Select) jumper on the back
of the board.
Note: Although the chip itself is rated for up to 2.4kV (RMS) of isolation, the
board has not been designed for such high voltage applications.
GET STARTED WITH THE SPARKFUN ACS723 CURRENT SENSOR
BREAKOUT GUIDE
Tags
ACS723 BREAKOUT CURRENT CURRENT SENSOR LOW CURRENT SENSOR
SparkFun Current Sensor Breakout - ACS723 (Low Current) Product Help and Resources
TUTORIALS SUPPORT TIPS SKILLS NEEDED
Current Sensor Breakout
(ACS723) Hookup Guide
JUNE 21, 2018
Learn how to measure the
current consumption of your
project using the ACS723 Current
Sensor.
SparkFun Electronics ® / Niwot, Colorado / Customer Service / Site Map / Terms of Service / Privacy Policy
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Customer Comments
COMMENTS 1REVIEWS 0
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n1ist / about 3 months ago / 1
This board is not suitable for 120v or 240v as the ground pour under the chip is too close to the input side for
proper isolation.
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