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ATS665LSG Scheda tecnica(PDF) 1 Page - Allegro MicroSystems |
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ATS665LSG Scheda tecnica(HTML) 1 Page - Allegro MicroSystems |
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1 / 18 page  ATS665LSG True Zero Speed, High Accuracy, Gear Tooth Sensor Pin 1: VCC Pin 2: VOUT Pin 3: Tie to Gnd or Float Pin 4: Gnd The ATS665 true zero-speed gear tooth sensor is an optimized Hall IC/magnet configuration packaged in a molded module that provides a user-friendly solution for digital gear tooth sensing applications. The sensor module consists of an over-molded package, which holds together a samarium cobalt magnet, a pole piece and a true zero-speed Hall IC that has been optimized to the magnetic circuit. This small package can be easily assembled and used in conjunction with gears of various shapes and sizes. The sensor incorporates a dual element Hall IC that switches in response to differential magnetic signals created by a ferrous target. The IC contains a sophisticated compensating circuit designed to reduce the detrimental effects of magnet and system offsets. Digital processing of the analog signal provides zero speed performance independent of air gap and also dynamic adaptation of device performance to the typical operating conditions found in automotive applications (reduced vibration sensitivity). High- resolution peak detecting DACs are used to set the adaptive switching thresholds of the device. Hysteresis in the thresholds reduces the negative effects of any anomalies in the magnetic signal associated with the targets used in many automotive applications. This sensor’s ability to provide tight duty cycle at high speeds and over a wide temperature range makes it ideal for transmission and industrial speed applications. The ATS665 is available in the SG package in the automotive temperature range, -40° to 150° (L). ABSOLUTE MAXIMUM RATINGS Supply Voltage 1, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . 26.5 V Reverse Supply Voltage, VRCC . . . . . . . . . . . . . . . . . . . . . . . . . . –18 V Reverse Output Current 2, IRCC. . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Continuous Output Current, IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Ambient Operating Temperature Range, TA . . . . . . . . . . . . . . . . . . -40° C to 150°C Storage Temperature, TS . . . . . . . . . . . . . . . . . . . . -65° C to 170°C Maximum Junction Temperature, TJmax . . . . . . . . . . . . . . . . . . . . . . . . . 165° C Maximum Junction Temperature – 100 Hours, TJmax . . . . . . . . . . . . . . . . . . . . . . . . . 185° C FEATURES & BENEFITS True zero-speed operation Switchpoints independent of air gap High vibration immunity Precise duty cycle signal over operating temperature range Large operating air gaps Defined power-on state Wide operating voltage range Digital output representing target profile Single-chip sensing IC for high reliability Small mechanical size Optimized Hall IC magnetic system 200 µs power-on time at gear speed < 100 rpm AGC and reference adjust circuit Under-voltage lockout 1 Refer to power de-rating curve Use complete part number when ordering: ATS665LSG. 2 VOUT ≥ -0.5V |
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