Automatic gain control and peak detecting filter gear sensor ic ALLEGRO ATS616LSGTN-T for gear tooth detection at low speeds
Product Overview
The ATS616 is a peak-detecting gear tooth sensor IC featuring automatic gain control and an integrated capacitor for highly accurate gear edge detection, even at low operating speeds. It utilizes Hall-effect technology with a dual-element Hall IC that responds to differential magnetic signals. The device incorporates sophisticated processing circuitry with an A-to-D converter for self-calibration, minimizing air gap variations. Its patented peak-detecting filter circuit effectively eliminates magnet and system offsets and can discriminate fast changes caused by tilt, gear wobble, and eccentricities. This easy-to-integrate solution offers first-tooth detection and stable operation down to extremely low RPM. The ATS616 can replace the ATS612LSB, eliminating the need for an external peak-holding capacitor.
Product Attributes
- Brand: Allegro MicroSystems
- Origin: U.S.A.
- Material: High-temperature plastic shell, Samarium-cobalt pellet, Pole piece, Differential open-collector Hall IC
- Certifications: Pb (lead) free, 100% matte tin plated leadframe
Technical Specifications
| Characteristic | Symbol | Test Condition | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|---|
| ELECTRICAL CHARACTERISTICS | ||||||
| Supply Voltage | VCC | Operating, TJ < 165C | 3.5 | 24 | V | |
| Undervoltage Lockout Threshold | VCC(UV) | VCC = 0 5 V; VCC = 5 0 V | 3.5 | V | ||
| Output On Voltage | VOUT(SAT) | IOUT = 20 mA | 200 | 400 | mV | |
| Output Current Limit | IOUTM | VOUT = 12 V | 25 | 45 | 55 | mA |
| Output Leakage Current | IOUTOFF | VOUT = 24 V | 15 | A | ||
| Supply Current | ICC | VCC > VCC(min) | 3 | 6 | 12 | mA |
| Power-On Time | tPO | VCC > 5 V | 80 | 500 | s | |
| Output Rise Time | tr | RLOAD = 500 , CS = 10 pF | 0.3 | 5.0 | s | |
| Output Fall Time | tf | RLOAD = 500 , CS = 10 pF | 0.2 | 5.0 | s | |
| PERFORMANCE CHARACTERISTICS | ||||||
| Operating Air Gap Range | AG | Operating within specification, Target Speed > 10 rpm | 0.4 | 2.5 | mm | |
| Operating Magnetic Flux Density Differential | BAG(p-p) | Operating within specification, Target Speed > 10 rpm | 60 | G | ||
| Operating Frequency | 10 | 10000 | Hz | |||
| Initial Calibration Cycle | ncal | Output edges before calibration is completed, at fsig < 100 Hz | 1 | 1 | 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 | () | |
| Edge Relative Timing Accuracy, Sequential | E | Target Speed = 1000 rpm, BAG(p-p) > 60 G | 1.5 | () | ||
| Allowable User Induced Differential Offset | BApp | Output switching only; may not meet data sheet specifications | 50 | G | ||
| ABSOLUTE MAXIMUM RATINGS | ||||||
| Supply Voltage | VCC | See Power Derating section | 26.5 | V | ||
| Reverse-Supply Voltage | VRCC | 18 | V | |||
| Output Off Voltage | VOUTOFF | 24 | V | |||
| Continuous Output Current | IOUT | 25 | mA | |||
| Reverse-Output Current | IROUT | 50 | mA | |||
| Operating Ambient Temperature | TA | L temperature range | 40 | 150 | C | |
| Maximum Junction Temperature | TJ(max) | 165 | C | |||
| Storage Temperature | Tstg | 65 | 170 | C | ||
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