ATS645 Allegro MicroSystems, Inc., ATS645 Datasheet
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ATS645
Related parts for ATS645
ATS645 Summary of contents
Page 1
... In addition, the ATS645 signal peak-detecting algorithm supports consistent switching at relatively large air gaps, where the peak-to-peak amplitude is small. These features make the ATS645 the ideal solution to detect the speed of fine- pitch targets such as those found in ABS (antilock braking) systems. ...
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... 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: ATS645LSHTN-I2. 2 Contact Allegro for additional packing options. ...
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... Z CC CC(max) A Test conditions only ATS645LSH-I1 ATS645LSH-I2 ATS645LSH-I1 ATS645LSH-I2 / Ratio of high current to low current t > Target gear speed < 100 rpm R = 100 Ω LOAD LOAD Detecting Gear Tooth Sensor within specifi cation, unless otherwise noted 1 Min ...
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... ATS645LSH OPERATING CHARACTERISTICS (continued) using reference target 60-0, T Characteristic SWITCHPOINT CHARACTERISTICS Rotation Speed Analog Signal Bandwidth Operate Point Release Point CALIBRATION Initial Calibration DAC CHARACTERISTICS Allowable User-Induced Differential Offset 5 FUNCTIONAL CHARACTERISTICS Operational Air Gap Range 6 Maximum Operational Air Gap AG Range 7 Duty Cycle Variation ...
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... ATS645LSH REFERENCE TARGET, 60-0 (60 Tooth Target) Characteristics Symbol Outside Diameter D o Face Width F Circular Tooth Length t Circular Valley Length t v Tooth Whole Depth h t Material Reference Gear Magnetic Gradient Amplitude With Reference to Air Gap 800 700 600 500 400 300 200 100 0 0 ...
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... ATS645LSH Duty Cycle vs. Air Gap 100 RPM 0.5 1 1.5 Air Gap (mm) Duty Cycle vs. Air Gap 1000 RPM 0.5 1 1.5 Air Gap (mm) True Zero Speed Miniature Differential Peak- Characteristic Data I1 Trim (º -40 25 ...
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... ATS645LSH THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information CHARACTERISTIC Package Thermal Resistance *Additional information is available on the Allegro Web site. True Zero Speed Miniature Differential Peak- Detecting Gear Tooth Sensor Symbol TEST CONDITIONS* Single-layer PCB with copper limited to solder pads R Two-layer PCB with 3 ...
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... Figure 4: Voltages profi les for high side and low side two-wire sensing low I CC(High) (see fi gure 4). SENSE OUT VCC VCC ATS645 ATS645 GND GND OUT(L) R SENSE I+ I OUT V+ V OUT( OUT(H) Allegro MicroSystems, Inc. ...
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... ATS645LSH Automatic Gain Control (AGC) This feature allows the device to operate with an optimal internal electrical signal, regardless of the air gap (within the AG speci- fi cation). During calibration, the device determines the peak-to- peak amplitude of the signal generated by the target. The gain of the sensor is then automatically adjusted ...
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... Assembly Description This sensor is integrally molded into a plastic body that has been optimized for size, ease of assembly, and manufacturability. High operating temperature materials are used in all aspects of construction VCC ATS645 GND 4 Pins 2 and 3 floating ECU 100 Ω R SENSE , the device enters Reset, where the output state CC(UV) ...
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... When power (V > applied to the device, a short CC CCMIN period of time is required to power the various portions of the IC. During this period, the ATS645 is guaranteed to power-on in the high current state CC(High) Initial Offset Adjust The sensor intially cancels the effects of chip, magnet, and installation offsets ...
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... ATS645LSH 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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... ATS645LSH 5.8 .228 5.0 .244 20.95 .825 13.05 .514 True Zero Speed Miniature Differential Peak- Detecting Gear Tooth Sensor Package SH Module 0.75 .0294 E 0.75 .0294 8.0 .315 2.9 .114 4.0 .157 A 1.7 .067 .039 0.6 .024 A 0.6 .024 Dimensions in millimeters. Untoleranced dimensions are nominal. U.S. Customary dimensions (in.) in brackets, for reference only ...
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... ATS645LSH True Zero Speed Miniature Differential Peak- Detecting Gear Tooth Sensor 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; and other patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the detail spec i fi ...