ACS70310/ACS70311 Programmable Linear Sensor IC

The ACS70310 and ACS70311 provide the highest accuracy linear Hall effect sensor IC for core-based current sensing ever offered from Allegro with a sensitivity error of ±1% and zero amp output voltage offset of only ±5 mV over a temperature range of +25°C to +150°C.

These sensors achieve excellent noise performance while maintaining a 2 μs response time and 240 kHz bandwidth. The on-board supply regulator enables the supply pin to survive voltages of ±18 V to protect against reverse battery connection. The output pin can survive voltages of +16 V to -6 V for defense against harsh automotive voltage transients. The sensors are customer programmable to optimize both the sensitivity and offset after assembly into the final system.

The ACS70311 offers all the features of the ACS70310 with the addition of undervoltage detection (UVD) and low voltage programming, which eliminates the need for voltages > V_CC during customer programming. The ACS70311 is backward compatible with the ACS70310, making it a drop-in replacement.

Excellent ESD performance and multiple diagnostic functions, such as broken ground detection and programmable clamps, help improve functional safety and reliability in critical automotive applications.