Product Overview
The ATS16351 is a True Power-On State (TPOS) GMR camshaft speed sensor IC designed for automotive applications. It integrates a back-biasing magnet, a fully synchronous digital IC, and an EMC protection circuit into a single sensing solution. Featuring a GMR bridge with an optimized magnetic circuit, it accurately detects ferromagnetic target profiles. The sensor offers zero-speed performance independent of air gap, True target state recognition at power-on (TPOS), and self-calibration capabilities to learn and optimize installation air gaps. It is available in a lead (Pb) free, 3-pin SM package with 100% NiPdAu plating, and provides flexible orientation and stray field immunity, making it backward compatible with Allegros Hall-effect solutions.
Product Attributes
- Brand: Allegro MicroSystems
- Technology: GMR (Giant Magnetoresistance)
- Package: 3-pin SIP (SM)
- Plating: 100% NiPdAu
- Lead Free: Yes
Technical Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| ELECTRICAL CHARACTERISTICS | ||||||
| Supply Voltage | VCC | Continuous operation, TJ < TJ (max) | 3.6 | 24 | V | |
| Supply Current | ICC | 5 | 7 | 10 | mA | |
| OUTPUT STAGE CHARACTERISTICS | ||||||
| Output LOW Voltage | VOUT(SAT) | IOUT = 5 mA | 300 | mV | ||
| Output LOW Voltage | VOUT(SAT) | IOUT = 15 mA | 800 | mV | ||
| Output Current Limit | IOUT(LIM) | Output = LOW | 30 | 80 | mA | |
| Output Rise Time | tr | Measured 10%-90% of VOUT; RPU = 1 k, VPU = 5 V | 5 | s | ||
| Output Fall Time (A option) | tf | Measured 90%-10% of VOUT; RPU = 1 k, VCC = 5 V | 2.5 | 5 | s | |
| Output Fall Time (F option) | tf | Measured 90%-10% of VOUT; RPU = 1 k, VCC = 5 V | 1.2 | 2.5 | s | |
| PERFORMANCE CHARACTERISTICS | ||||||
| Operational Air Gap Range | AG | TPOS guaranteed | 1.5 | 4 | mm | |
| Signal Bandwidth | BW | Equivalent to 3 dB cutoff frequency | >8 | kHz | ||
| POWER-ON CHARACTERISTICS | ||||||
| Power-On Time | tPO | fOP < 100 Hz, time from VCC > VCC(MIN) to when IC enters calibration mode | 1 | ms | ||
| OPERATING MODE CHARACTERISTICS | ||||||
| Number of target teeth (peaks) stored in memory for threshold update algorithm | N | 1 | 13 | tooth | ||
| THERMAL CHARACTERISTICS | ||||||
| Package Thermal Resistance | RJA | 1-layer PCB with copper limited to solder pads | 147 | C/W | ||
| Operating Ambient Temperature | TA | -40 | 160 | C | ||
| Maximum Junction Temperature | TJ(max) | 175 | C | |||
Models:
- ATS16351PSMGTN-LS01N12BFRT1-D
- ATS16351PSMGTN-LS03N12BFRT1-D
Programmable Options:
- Output Polarity (L/H)
- Switch Point Variation (S01, S03, S(00-99))
- Teeth Memory Number (Nx, 1 to 13)
- Output Fall Time (S, A, F)
- Running Mode Hidden Hysteresis (S, R, B, V)
- Delay Time (T1, T2, T3, T4)
- Target Profiling Diagnostics (-D or blank)
Pinout:
- 1: VCC (Supply voltage)
- 2: GND (Ground)
- 3: OUT (Device output)
2504101957_ALLEGRO-ATS16351PSMGTN_C17692542.pdf
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