ATS610LSCATS610LSC, katalog
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ATS610LSC DYNAMIC, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR The ATS610LSC gear-tooth sensor is an optimized Hall IC plus magnet subassembly that provides a user-friendly solution for digital gear-tooth sensing applications. The subassembly combines in a compact high-temperature plastic shell, a samarium-cobalt magnet, a pole piece, a differential Hall-effect IC that has been optimized to the magnetic circuit, and a voltage regulator. The sensor can be easily used in conjunction with a wide variety of gear or target shapes and sizes. The ATS610LSC is designed to provide increased immunity to false switching in applications that require the sensing of large-tooth gears (e.g., crank angle or cam angle). The sensor subassembly is ideal for use in gathering speed, position, and timing information using gear-tooth-based configurations. 1 = Supply 2 = Output 3 = Ground 1 2 3 The gear-sensing technology used for this sensor plus magnet subassembly is Hall-effect based. The sensor incorporates a dual-element Hall IC that switches in response to differential magnetic signals created by the ferrous target. The circuitry contains a patented track-and-hold peak-detecting circuit to eliminate magnet and system offset effects. This circuit has the ability to detect relatively fast changes, such as those caused by gear wobble and eccentricities, and provides stable operation at extremely low rotation speeds. Dwg. AH-008 PRELIMINARY INFORMATION (subject to change without notice) September 3, 1998 FEATURES AND BENEFITS ABSOLUTE MAXIMUM RATINGS over operating temperature range Fully Optimized Differential Digital Gear-Tooth Sensor Single-Chip Sensing IC for High Reliability Supply Voltage, V CC ............................. 24 V Reverse Supply Voltage, V RCC (1 minute max.) ................... -24 V Output OFF Voltage, V OUT .................... 18 V Reverse Output Voltage, V OUT .......... -0.5 V Continuous Output Current, I OUT ...... 25 mA Package Power Dissipation, P D ........................................ See Graph Operating Temperature Range, T A ............................... -40 Extremely Low Timing Accuracy Drift with Temperature Large Operating Air Gaps Small Mechanical Size Optimized Magnetic Circuit s Power-On Time <10 RPM Operation (single-tooth target) Correct First-Edge Detection Under-Voltage Lockout Wide Operating Voltage Range Defined Power-Up State C to +150 C Storage Temperature, T S ................ +170 C Always order by complete part number: ATS610LSC . Patented Peak-Detecting Filter: <200 ATS610LSC DYNAMIC, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR 1200 1000 800 R θ JA = 119 ° C/W 600 400 200 0 20 40 60 80 100 120 140 160 180 AMBIENT TEMPERATURE IN °°° C Dwg. GH-065-2 FUNCTIONAL BLOCK DIAGRAM SUPPLY 1 REG UVLO POWER-ON LOGIC OUTPUT X 2 E1 + Ð + Ð TRACK & HOLD MAGNET 3 X GROUND E2 Dwg. FH-014-2 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1998, 2002 Allegro MicroSystems, Inc. ATS610LSC DYNAMIC, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR ELECTRICAL CHARACTERISTICS over operating voltage and temperature range. Limits Characteristic Symbol Test Conditions Min. Typ. Max. Units Supply Voltage V CC Operating, T J < 165 C 5.0 12 24 V Power-On State POS V CC = 0 5 V HIGH HIGH HIGH Ð Under-Voltage Lockout V CC(UV) I OUT = 20 mA, V CC = 0 5 V Ð 4.0 Ð V Output Saturation Voltage V OUT(SAT) I OUT = 20 mA Ð 350 600 mV Output Leakage Current I OFF V OUT = 18 V, Output OFF Ð 5.0 15 A Supply Current I CC V CC = 6 V, Output OFF 5.5 7.7 11 mA V CC = 6 V, Output ON 8.5 10.5 13 mA Power-On Delay t on Ð Ð 200 s Output Rise Time t r R L = 500 , C L = 10 pF Ð 0.2 2.0 s Output Fall Time t f R L = 500 , C L = 10 pF Ð 0.2 2.0 s NOTE: Typical data is at V CC = 12 V and T A = +25 ° C and is for design information only. OPERATION over operating voltage and temperature range with reference target (unless otherwise specified). Limits Characteristic Symbol Test Conditions Min. Typ. Max. Units Air Gap Range AG Operating, 0.4 Ð 1.5 mm Target Speed > 20 RPM Minimum Air Gap AG min Operating, One-Tooth (180 ) Ð 0.25 Ð mm Target, Target Speed = 1000 RPM Maximum Air Gap AG max Operating, One-Tooth (180 ) Ð 2.25 Ð mm Target, Target Speed = 1000 RPM Timing Accuracy t θ Target Speed = 1000 RPM, Ð 0.5 1.0 0.4 mm AG 1.5 mm NOTE: Air Gap is defined as the distance from the face of the sensor subassembly to the target. ATS610LSC DYNAMIC, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR D = 115 mm o TARGET F (THICKNESS) 3 mm AIR GAP REFERENCE TARGET SENSOR POLE PIECE SOUTH PERMANENT MAGNET NORTH 1 2 3 Dwg. MH-022 mm D = 115 mm o TARGET ° (ONE TOOTH) F (THICKNESS) 3 mm E1 E2 AIR GAP ONE-TOOTH (180 ) TARGET SENSOR POLE PIECE SOUTH PERMANENT MAGNET NORTH 1 2 3 Dwg. MH-022-1 mm 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 T = 180 ATS610LSC DYNAMIC, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR TYPICAL ATS610LSC ELECTRICAL CHARACTERISTICS 14 15 12 14 11 13 OUTPUT ON OUTPUT ON 10 12 9.0 V = 5 V CC 11 8.0 10 OUTPUT OFF 7.0 OUTPUT OFF 9.0 T = 150 A C 6.0 8.0 4.0 7.0 -40 0 40 80 120 160 200 2.0 6.0 10 14 18 AMBIENT TEMPERATURE IN C SUPPLY VOLTAGE IN VOLTS Dwg. GH-014-1 Dwg. GH-058-2 150 175 150 125 I = 20 mA OUT 125 100 100 75 T = 25 ° A C 75 50 25 50 0 -40 0 40 80 120 160 200 0 10 20 30 40 AMBIENT TEMPERATURE IN C OUTPUT SINK CURRENT IN mA Dwg. GH-013-1 Dwg. GH-059 continued next pageÉ [ Pobierz całość w formacie PDF ] |
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