ATS673 Allegro MicroSystems, Inc., ATS673 Datasheet
ATS673
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ATS673 Summary of contents
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... Advanced circuitry on the die allows them to survive positive and negative transient pulses on both the input and output. The ATS673 and ATS674 devices retain all of the same characteristics as the ATS671 and ATS672. The devices remain true zero-speed gear tooth sensors with optimized Hall IC/ magnet configuration in an SIP (single in-line package) ...
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... NOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Status change: May 1, 2006. These variants include: ATS673LSETN-LT, ATS673LSETN-HT, ATS674LSETN-LT, and ATS674LSETN-HT. 2 Contact Allegro for additional packing options ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 OPERATING CHARACTERISTICS Characteristic Symbol ELECTRICAL CHARACTERISTICS Supply Voltage V CC Undervoltage Lockout V CCUV Supply Zener Clamp Voltage V ZSupply Supply Zener Current 2 I ZSupply Supply Current I CC Reverse Supply Current I RCC POWER-ON CHARACTERISTICS Power-On Time ...
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... ATS673 During initial calibration; rising or falling edges, gear speed = 1000 rpm, target eccentricity ATS674 < 0.1 mm ATS673 Rising edges; after initial calibration, gear speed = 1000 rpm, target eccentricity < 0.1 mm ATS674 ATS673 Falling edges; after initial calibration, gear speed = 1000 rpm, target eccentricity < 0.1 mm ATS674 After initial calibration ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 Installation Air Gap Branded Face Target Mechanical Profile Sensor Output Electrical Profile -HT Option for Automotive Cam Sensing Applications Air Gap Comparisons Target (Gear) Sensor Device Relative Timing Accuracy V+ V OUT Err RELR(Max – Min) Err RELF(Max – ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 REFERENCE TARGET 8X Characteristic Symbol Outside Diameter D o Face Width F Circular Tooth Length t Circular Valley Length t v Tooth Whole Depth h t Material Branded Face Figure 1. Configuration with Reference Target Target/Gear Parameters for Correct TPOS Operation ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 Supply Current (On) Versus Ambient Temperature -50 - 100 T (°C) A Supply Current (On) Versus Supply Voltage (V) CC Output Voltage (Low) Versus Ambient Temperature ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 Characteristic Data: Relative Timing Accuracy ATS673 Relative Timing Accuracy Versus Air Gap Rising Mechanical Edge 1000 rpm, Relative to 0.5 mm Air Gap 0.0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 0.5 1.0 1.5 2.0 AG (mm) ATS674 Relative Timing Accuracy Versus Air Gap Rising Mechanical Edge 1000 rpm, Relative to 0 ...
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... Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 Assembly Description The ATS673 and ATS674 true zero-speed gear tooth sensors have a Hall IC-magnet configuration that is fully optimized to provide digital detection of gear tooth edges. This sensor is integrally molded into a plastic body that has been optimized for size, ease of assembly, and manufacturability ...
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... Automotive Cam Sensing Applications Power Supply Protection The ATS673 and ATS674 contain an on-chip regulator and can operate over a wide range of supply voltage levels. For applica- tions using an unregulated power supply, transient protection must be added externally. For applications using a regulated supply line, EMI and RFI protection may still be required ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 AGC (Automatic Gain Control) The AGC feature is implemented by a unique patented self- calibrating circuitry. After each power-on, the devices measure the peak-to-peak magnetic signal. The gain of the sensor is then 600 500 ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 Switchpoints Switchpoints in the ATS673 and ATS674 are established dynami- cally as a percentage of the amplitude of the signal, V normalization with AGC. Two DACs track the peaks of V (see the Update subsection). The switching thresholds are established at fixed percentages of the values held in the two DACs ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 Update The ATS673 and ATS674 incorporate an algorithm that continu- ously monitors the system and updates the switching thresholds accordingly. The switchpoint for each transition is determined by the previous two transitions. Because variations are tracked (A) TEAG varying ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 Magnetic Profile In order to establish the proper operating specification for a par- ticular sensor device and target system, a systematic evaluation of the magnetic circuit should be performed. The first step is the generation of a magnetic map of the target. By using a calibrated device, a magnetic profile of the system is made ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 Accuracy While the update algorithm will allow the sensor devices to adapt to typical air gap variations, major changes in air gap can adversely affect switching performance. When characterizing sensor performance over a significant air gap range, be sure to ESD – ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional information is available on the Allegro Web site. for Automotive Cam Sensing Applications Power Derating Symbol Test Conditions* 1-layer PCB with copper limited to solder pads R 1-layer PCB with copper limited to solder pads and 3 ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 The device must be operated below the maximum junction temperature of the device Under certain combinations of J(max) peak conditions, reliable operation may require derating sup- plied power or improving the heat dissipation properties of the application. This section presents a procedure for correlating factors affecting operating T ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 6.2 .244 20.95 .825 11.6 .457 Preliminary dimensions, for reference only Untoleranced dimensions are nominal. Dimensions in millimeters U.S. Customary dimensions (in.) in brackets, for reference only Dimensions exclusive of mold flash, burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown ...
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... ATS673 and Self-Calibrating TPOS Gear Tooth Sensor Optimized ATS674 for Automotive Cam Sensing Applications The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; 6,297,627; 6,525,531; and other patents pending ...