ATS674LSETN-LT-T Allegro Microsystems Inc, ATS674LSETN-LT-T Datasheet
ATS674LSETN-LT-T
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ATS674LSETN-LT-T Summary of contents
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Self-Calibrating TPOS Gear Tooth Sensor IC Optimized for Limited Availability Product This device is in production, but is limited to existing customers. Contact factory for additional information. Date of status change: November 2, 2009 Recommended Substitutions: For existing customer transition, ...
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Self-Calibrating TPOS Gear Tooth Sensor ICs Optimized for Features and Benefits ▪ Tight timing accuracy over operating temperature range ▪ True zero-speed operation ▪ TPOS (True Power-On State) ▪ Air-gap-independent switchpoints ▪ High immunity to vibration ▪ Large operating air ...
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... High-resolution (9-bit) peak detecting DACs are used to set the adaptive switching thresholds of the devices, ensuring high accuracy Selection Guide Part Number V (Over Tooth) OUT ATS673LSETN-LT-T Low ATS673LSETN-HT-T High ATS674LSETN-LT-T Low ATS674LSETN-HT-T High * Contact Allegro for additional packing options. Absolute Maximum Ratings Characteristic Supply Voltage Reverse-Supply Voltage Continuous Output Current ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications 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 ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications OPERATING CHARACTERISTICS, continued Characteristic Symbol SWITCHPOINT CHARACTERISTICS Tooth Speed S Bandwidth BW Operate B OP Release CALIBRATION CHARACTERISTICS Initial Calibration Cal IC AGC Disable Cal AGC Calibration Update ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications Installation Air Gap Branded Face Target Mechanical Profile IC Output Electrical Profile -HT Option Self-Calibrating TPOS Gear Tooth Sensor ICs Air Gap Comparisons Target (Gear) ATS Device Relative Timing Accuracy V+ ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications 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. ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications Supply Current (On) Versus Ambient Temperature -50 - 100 T (°C) A Supply Current (On) Versus Supply Voltage ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications 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 ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications Assembly Description The ATS673 and ATS674 true zero-speed gear tooth sensor ICs have a Hall IC-rare earth pellet configuration that is fully optimized to provide digital detection of gear tooth edges. ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications TPOS (True Power-On State) Operation Under specified operating conditions, the devices are guaran- teed to attain a specified output voltage polarity at power-on, in relation to the target feature nearest the ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications 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 IC ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications 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 ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications 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 ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications Magnetic Profile In order to establish the proper operating specification for a particular ATS device and target system, a systematic evaluation of the magnetic circuit should be performed. The first step ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications Accuracy While the update algorithm will allow the IC to adapt to typical air gap variations, major changes in air gap can adversely affect switching performance. When characterizing IC performance over ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional information is available on the Allegro Web site. Self-Calibrating TPOS Gear Tooth Sensor ICs Power ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications 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 ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications 10.00 3.3 1.3 4.9 6.2 24.65 11.6 1 0.6 A Self-Calibrating TPOS Gear Tooth Sensor ICs Package SE, 4-Pin SIP 1 0 2.0 1.6 ...
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ATS673 and ATS674 Optimized for Automotive Cam Sensing Applications Copyright ©2005-2009, Allegro MicroSystems, Inc. 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; ...