- Climbing pet constant temperature heating padPololu ACS724 Bidirectional Current Sensor Carrier (±30A)

• Pololu ACS724 Bidirectional Current Sensor Carrier (±30A)
• Accurately measures ±30A
• Low-resistance path
• Isolates up to 2.4kV RMS
• High 120kHz bandwidth
• Operates -40 to 150 °C

The Pololu ACS724 Bidirectional Current Sensor Carrier (±30A) is a sophisticated device designed to accurately measure bidirectional current flow up to ±30A. It features Allegros ACS724LLCTR-30AB Hall effect-based linear current sensor, which is known for its low-resistance current path and capability to provide electrical isolation up to 2.4 kV RMS. The sensor outputs a proportional analog voltage centered at 2.5 V, with a sensitivity of 66 mV/A and a typical error margin of ±0.8%. It is optimized for operation within a voltage range of 4.5 V to 5 V, making it suitable for integration into 5 V systems.

The sensors design incorporates differential Hall sensing to reject common-mode fields, ensuring that external magnetic fields do not compromise the accuracy of the measurements. The internal resistance of the conductive path is typically low, and the printed circuit board is constructed with 2-oz copper to minimize power loss. The Hall effect sensors design allows for the electrical isolation of the current path from the sensors electronics, which is beneficial for applications requiring such isolation. The sensor boasts a high bandwidth of 120 kHz, which facilitates rapid response times in control applications. Additionally, it includes an optional FILTER pin for bandwidth limiting, which can enhance noise reduction and improve resolution at lower frequencies. The sensor also features integrated digital temperature compensation circuitry, which maintains near closed-loop accuracy over temperature in an open-loop sensor. It is built to withstand automotive-grade operating temperatures ranging from -40 to 150 °C.

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