ATS675LSE Datasheet | Allegro MicroSystems

FEATURES AND BENEFITS - Optimized for automotive camshaft sensing - True target state recognition at device power-on (TPOS) and at zero target speed - Chopper stabilization reduces offset drift - Digital output polarity option: follow or invert target profile - Rapid calibration and transition to Running mode - Automatic Gain Control (AGC) during calibration eliminates effects of air gap variations - Tight timing accuracy over full operating temperature range - Operation at supply voltages as low as 3.3 V - Undervoltage lockout (UVLO) PACKAGE: 4-pin SIP (suffix SE) Not to scale DESCRIPTION The ATS675 is a next generation member of the Allegro True Power‑On State (TPOS) sensor IC family, offering improved accuracy pared to prior generations, and performing at absolutely zero target speed. An output polarity option allows customization for specific applications. The device incorporates a single Hall-element IC with an optimized custom magnetic circuit that switches in response to magnetic signals. The resulting output of the device is a digital representation of a ferromagnetic target profile. The IC contains a sophisticated digital circuit designed to eliminate the detrimental effects of magnetic and system offsets. Signal processing is used to provide target state recognition at zero rotational speed, consistent switch points regardless of air gap, and dynamically adapt device performance to the typical operating conditions found in automotive environments, particularly cam sensing applications. High-resolution peak-detecting DACs are used to set the adaptive switching thresholds of the device. The ATS675 also includes a filter that increases the noise immunity and the signal-to-noise ratio of the IC. The device is provided in a 4-pin SIP package (SE) that is lead (Pb) free with 100% matte tin leadframe plating. Typical Application CBYPASS 0.1 µF ATS675 A TEST GND 4 A Remended VPU RPU Output ATS675LSE-DS, Rev. 5 MCO-0000848 Figure...