ACS711KEXLT-15AB-T CURRENT SENSOR CARRIER
ACS711KEXLT-15AB-T CURRENT SENSOR CARRIER
We are offering these breakout boards with support from Allegro Microsystems as an easy way to use or evaluate their ACS711 Hall effect-based, electrically isolated current sensors with overcurrent fault output; we therefore recommend careful reading of the ACS711 datasheet before using this product. This sensor has an operating voltage of 3 V to 5.5 V and an output sensitivity of 90 mV/A when Vcc is 3.3 V (or 136 mV/A when Vcc is 5 V). The following list details some of the sensor’s key features:
Hall effect-based sensor with electrically isolated current path allows the sensor to be inserted anywhere along the current path and to be used in applications that require electrical isolation.
Designed for bidirectional input current from -15.5 A to 15.5 A (though the robust sensor IC can tolerate 100 ms transient current spikes up to 100 A).
Conductive path internal resistance is typically 0.6 mΩ, and the PCB is made with 2-oz copper, so very little power is lost in the board.
100 kHz bandwidth analog output voltage proportional to AC or DC currents.
Good accuracy and reliability: factory calibration results in a typical total output error of ±5% at room temperature, the output offset voltage is extremely stable, and the sensor has zero magnetic hysteresis.
Overcurrent FAULT output latches low when current magnitude exceeds 15.5 A.
Operating temperature range of -40°C to 125°C.
0.7″×0.8″ carrier board offers a variety of ways to insert it into the current path and 0.1″-pitch (breadboard compatible) power, ground, and output pins.
The pads are labeled on the bottom silkscreen, as shown in the picture to the right. The silkscreen also shows the direction that is interpreted as positive current flow via the +i arrow.
This 15.5 A current sensor is marked with a black X. We also sell a 31 A version that uses the same carrier PCB; you can distinguish the versions by reading the text on the IC or by looking at the color of the X on the bottom silkscreen.
General specifications
Current sense: 90 mV/A
Minimum logic voltage: 3 V
Maximum logic voltage: 5.5 V
Supply current: 4 mA
Current range: -15.5A to +15.5A (bidirectional 15.5A), 3-5.5V
Current sensor: Allegro ACS711KEXLT-15AB
Notes:
1 Without included optional header pins.
2 When Vcc is 3.3 V. This specification is proportional to Vcc.
Tags: ACS711KEXLT-15AB-T CURRENT SENSOR CARRIER