True Power On State Hall Effect Sensor IC ALLEGRO ATS128LSETN-T for Speed and Position Detection
Product Overview
The ATS128LSE is a programmable, true power-on state (TPOS) Hall-effect sensor IC designed for gear-tooth and proximity sensing applications. It combines a Hall-effect IC with a rare-earth pellet to detect magnetic signals from ferromagnetic targets. Key features include a wide programmable magnetic operate point (BOP) with fixed hysteresis, user-programmable output polarity and fall time, on-board voltage regulation, and internal protection against supply transients, output short-circuits, and reverse battery conditions. Its advanced dynamic offset cancellation technique ensures stable switch points over temperature and reduces residual offset voltage. This device is ideal for gathering speed or position information and is supplied in a 4-pin SIP package.
Product Attributes
- Brand: Allegro MicroSystems
- Package: 4-pin SIP
- Lead Free: Yes
- Lead Plating: 100% matte tin
Technical Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 3 | 12 | 24 | V | |
| Supply Current (No Load) | ICC | No load on VOUT | 5.5 | mA | ||
| Power-On Time | tPO | TA = 25C; CLOAD (PROBE) = 10 pF | 30 | s | ||
| Output Saturation Voltage | VOUT(sat) | Output = On, IOUT = 20 mA | 175 | 400 | mV | |
| Output Leakage Current | IOFF | VOUT = 24 V; Output = Off | 10 | A | ||
| Output Current Limit | IOUT(lim) | Short-Circuit Protection, Output = On | 30 | 90 | mA | |
| Output Rise Time | tr | VCC = 12 V, RPU = 820 , CLOAD = 10 pF | 2 | s | ||
| Output Fall Time | tf | FALL = 0, VCC = 12 V, RLOAD = 820 , CLOAD = 10 pF | 2 | s | ||
| Air Gap Setpoint Drift Over Temperature | AGDrift | Device programmed with air gap of 2.5 mm | 0.2 | mm | ||
| Programmable Air Gap Range | AGRange | TA = 25C, Minimum code (BOPPOL = 1, BOPSEL = 255) | 2.5 | mm | ||
| Programmable Air Gap Range | AGRange | TA = 25C, Maximum code (BOPPOL = 0, BOPSEL = 255) | 1.5 | mm | ||
| Programming Resolution | ResAG | TA = 25C, device programmed with air gap of 2.5 mm | 0.05 | mm | ||
| Package Thermal Resistance | RJA | 1-layer PCB with copper limited to solder pads | 101 | C/W | ||
| Package Thermal Resistance | RJA | 1-layer PCB with copper limited to solder pads and 3.57 in.2 (23.03 cm2) of copper area each side | 77 | C/W |
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