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ATS660LSB Dataheets PDF



Part Number ATS660LSB
Manufacturers Allegro MicroSystems
Logo Allegro MicroSystems
Description TRUE ZERO-SPEED HALL-EFFECT ADAPTIVE GEAR-TOOTH SENSOR
Datasheet ATS660LSB DatasheetATS660LSB Datasheet (PDF)

Data Sheet 27627.107a ATS660LSB TRUE ZERO-SPEED, HALL-EFFECT ADAPTIVE GEAR-TOOTH SENSOR IC 1 2 3 4 Pin 1 = Supply Pin 2 = Output Pin 3 = Internal Connection Pin 4 = Ground Dwg. AH-006-4 ABSOLUTE MAXIMUM RATINGS at TA = 25°C Supply Voltage, VCC .... 26.5 V* Reverse Supply Voltage, VRCC .. -24 V Output OFF Voltage, VOUT .. 26.5 V Reverse Output Voltage, VROUT -24 V Continuous Output Current, IOUT .. 20 mA Reverse Output Current, IR.

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Data Sheet 27627.107a ATS660LSB TRUE ZERO-SPEED, HALL-EFFECT ADAPTIVE GEAR-TOOTH SENSOR IC 1 2 3 4 Pin 1 = Supply Pin 2 = Output Pin 3 = Internal Connection Pin 4 = Ground Dwg. AH-006-4 ABSOLUTE MAXIMUM RATINGS at TA = 25°C Supply Voltage, VCC ........................ 26.5 V* Reverse Supply Voltage, VRCC ............ -24 V Output OFF Voltage, VOUT ................. 26.5 V Reverse Output Voltage, VROUT .......... -24 V Continuous Output Current, IOUT ....... 20 mA Reverse Output Current, IROUT .......... 50 mA Package Power Dissipation, PD .......................................... See Graph Operating Temperature Range, TA ............................. -40°C to +150°C* Junction Temperature, (continuous), TJ .......................... +165°C (100 hr), TJM ............................... +180°C Storage Temperature, TS ................... +170°C * Operation at increased supply voltages with external circuitry is described in Applications Information. Devices for operation at increased temperatures are available on special order. The ATS660LSB is an ideal gear-tooth sensor IC solution for uniform teeth targets as found in today’s demanding transmission applications. This digital differential Hall-effect circuit is the choice when repeatability and timing accuracy count. The ATS660LSB incorporates patented self-calibration circuitry (U.S. Pat. 5,917,320) that nulls out the effects of installation air gap, ambient temperature, and magnet offsets to provide superior timing accuracy with symmetrical targets over large operating air gaps — typical of targets used in speed-sensing applications (pitches varying from below 0.5 to over 1.2 teeth per diametric millimeter). The self-calibration at power up keeps the performance optimized over the life of the device. The ATS660LSB has an opencollector output for direct digital interfacing with no further signal processing required. This device is available in a small 9-mm diameter by 7-mm long package for optimal manufacturing. The integrated circuit incorporates a dual-element Hall-effect IC and signal processing that switches in response to differential magnetic signals created by the ferrous gear teeth. The circuitry contains a sophisticated digital circuit to eliminate magnet and system offsets and to achieve true zero-speed operation . D-to-A converters are used to adjust the device gain at power on and to allow air-gap independent switching, which greatly reduces vibration sensitivity of the device. FEATURES AND BENEFITS ■ Fully optimized differential digital gear-tooth sensor IC ■ Single-chip sensing IC for high reliability ■ High vibration immunity ■ Precise duty cycle ■ Small mechanical size (9 mm diameter x 7 mm length) ■ Automatic gain control circuitry (self calibration) ■ True zero-speed operation ■ Under-voltage lockout ■ Wide operating temperature range ■ Optimized Hall IC magnetic circuit ■ Digital signal processing ■ Large operating air gap range ■ Wide operating voltage range ■ Excellent repeatability performance ■ Defined power-on state Always order by complete part number: ATS660LSB . ATS660LSB TRUE ZERO-SPEED, HALL-EFFECT ADAPTIVE GEAR-TOOTH SENSOR IC FUNCTIONAL BLOCK DIAGRAM 1 SUPPLY REG 32 V UVLO POWER-ON LOGIC X E1 – – MAGNET + REF + X E2 POSITIVE PEAK DIGITAL PROC. NEGATIVE PEAK DIGITAL PROC. THRESHOLD COMPARATORS – + – + Dwg. FH-019-2A Pin 3 must be externally connected to pin 4. 3 INTERNAL CONNECTION CONTROL OUTPUT 2 CURRENT LIMIT <1Ω GROUND 4 ALLOWABLE PACKAGE POWER DISSIPATION IN mW REFERENCE GENERATOR OUTPUT LOGIC 1000 800 RθJA = 147°C/W 600 400 CONT1IN00UHOOUUSRS MAX. 200 0 20 40 60 80 100 120 140 160 180 AMBIENT TEMPERATURE IN °C Dwg. GH-065-6 115 Northeast Cutoff, Box 15036 2 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2002 Allegro MicroSystems, Inc. ATS660LSB TRUE ZERO-SPEED, HALL-EFFECT ADAPTIVE GEAR-TOOTH SENSOR IC ELECTRICAL CHARACTERISTICS at VCC = VOUT = 12 V and TA = +25°C (unless otherwise noted). Characteristic Symbol Test Conditions Limits Min. Typ. Max. Units Supply Voltage Power-On State Under-Voltage Lockout Low Output Voltage Output Current Limit Output LeakageCurrent Supply Current VCC POS VCC(UV) VOUT(SAT) IOUTM IOFF ICC Operating, TJ < 165°C VCC = 0 → 5 V VCC = 0 → 5 V IOUT = 20 mA VOUT = 24 V Output off Output on 4.5 12 24 HIGH* HIGH* HIGH* 4.1 4.2 4.3 – 0.2 0.4 25 45 55 – 0.2 10 3.5 7.0 12 5.0 8.5 14 V – V V mA µA mA mA Output Rise Time Ir RL = 500 Ω, CL = 10 pF Output Fall Time If RL = 500 Ω, CL = 10 pF Power-On Time ton Reference gear, <100 rpm Zener Voltage VZ IZT = TBD * Output transistor is OFF (high logic level). – 0.2 5.0 – 0.2 5.0 – – 200 – 32 – µs µs µs V www.allegromicro.com 3 ATS660LSB TRUE ZERO-SPEED, HALL-EFFECT ADAPTIVE GEAR-TOOTH SENSOR IC OPERATION with reference gear at TA = +25°C. Characteristic Air-Gap Range Calibration Cycle Recalibrat.


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