Precision gear tooth sensor ic ALLEGRO ATS617LSGTN-T for accurate speed position and timing detection
Product Overview
The ATS617 is a dynamic, self-calibrating, peak-detecting, differential Hall effect gear tooth sensor IC. It offers highly accurate gear edge detection, even at low operating speeds, due to its automatic gain control and integrated capacitor. This device is ideal for systems requiring precise speed, position, and timing information from gear-tooth configurations, such as automotive camshaft sensing. Its patented peak-detecting filter provides immunity to magnetic and system offsets, and it can discriminate fast changes caused by gear wobble or eccentricity. The ATS617 is designed for easy integration and provides stable operation down to extremely low RPM.
Product Attributes
- Brand: Allegro MicroSystems, LLC
- Origin: U.S.A.
- Material: Samarium-cobalt pellet, high-temperature plastic shell
- Certifications: Pb (lead) free, 100% matte tin plated leadframe
Technical Specifications
| Characteristic | Symbol | Test Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Electrical Characteristics | ||||||
| Supply Voltage | VCC | Operating, TJ < 165C | 4.5 | 24 | V | |
| Supply Protection Resistor | RS | 60 | 72 | |||
| Undervoltage Lockout Threshold | VCC(UV) | VCC = 0 5 V; VCC = 5 0 V | 3.7 | V | ||
| Output On Voltage | VOUT(SAT) | IOUT = 15 mA, output on | 100 | 400 | mV | |
| Supply Zener Clamp Voltage | VZsupply | ICC = 15 mA, TA = 25C | 28 | V | ||
| Output Zener Clamp Voltage | VZoutput | IOUT = 3 mA, TA = 25C | 30 | V | ||
| Supply Zener Current | IZsupply | VS = 28 V | 15 | mA | ||
| Output Zener Current | IZoutput | VOUT = 30 V | 3 | mA | ||
| Output Current Limit | IOUTM | VOUT = 12 V | 25 | 45 | 55 | mA |
| Output Leakage Current | IOUTOFF | VOUT = 24 V, output off | 15 | A | ||
| Supply Current | ICC | VCC > VCC(min) | 3 | 6 | 12 | mA |
| Power-On Time | tPO | VCC > 5 V | 80 | 500 | s | |
| Power-On State | POS | VCC = 0 5 V | High | V | ||
| Output Rise Time | tr | RPU = 2 k, CL = 4.7 nF, 10% to 90% | 21 | s | ||
| Output Fall Time | tf | VPU = 5 V, RPU = 2 k, CL = 4.7 nF, 90% to 10% | 6 | s | ||
| Output Fall Time | tf | VPU = 12 V, RPU = 2 k, CL = 4.7 nF, 90% to 10% | 6 | 9 | 12 | s |
| Performance Characteristics | ||||||
| Operating Air Gap Range | AG | Allegro reference target 60+2 operating at or above Minimum Operating Speed | 0.4 | 2.5 | mm | |
| Operating Magnetic Flux Density Differential | BAG(p-p) | Operation at or above Minimum Operating Speed | 60 | G | ||
| Analog Signal Bandwidth | BW | 15 | kHz | |||
| Minimum Operating Speed | SOP | Allegro 60+2 reference target | 10 | rpm | ||
| Initial Calibration Cycle | ncal | Output edges before calibration is completed, at fsig < 100 Hz | 1 | edge | ||
| Calibration Mode Disable | ndis | Output falling edges for startup calibration to be complete | 64 | 64 | 64 | edge |
| Relative Timing Accuracy, Sequential | E | Target Speed = 1000 rpm, BAG(p-p) > 100 G | 0.5 | 0.75 | deg. | |
| Relative Timing Accuracy, Sequential | E | Target Speed = 1000 rpm, BAG(p-p) > 60 G | 1.5 | deg. | ||
| Allowable User Induced Differential Offset | BApp | Output switching only; may not meet data sheet specifications | 50 | G | ||
| Switching Hysteresis, Start-up | VSWHYS(su) | 190 | mV | |||
| Switching Hysteresis, Running Mode | VSWHYS(rm) | 105 | mV | |||
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