Product Overview
The A16311PUCA is a self-calibrating, automatic True Power-On State (TPOS) camshaft speed sensor IC. It integrates a fully synchronous digital IC and EMC protection components, eliminating the need for external EMI protection. This device offers true target state recognition at power-on with automatic TPOS self-programming, EEPROM programming for optimization and traceability, and chopper stabilization for reduced offset drift. It is designed for automotive camshaft sensing applications, providing a digital output representing the ferromagnetic target profile. The A16311 is highly programmable to meet specific application requirements and is supplied in a lead-free, 3-pin SIP package with matte tin leadframe plating.
Product Attributes
- Brand: Allegro MicroSystems
- Package: 3-pin SIP (UCA)
- Material: Lead (Pb) free with 100% matte tin leadframe plating
- Certifications: Not explicitly stated, but designed for automotive applications.
Technical Specifications
| Characteristic | Symbol | Min. | Typ. | Max. | Unit | Notes |
| ELECTRICAL CHARACTERISTICS | ||||||
| Supply Voltage | VCC | 3.3 | 24 | V | Continuous operation, TJ < TJ(MAX) | |
| Supply Current | ICC | 5 | 7 | 10 | mA | |
| OUTPUT STAGE CHARACTERISTICS | ||||||
| Output On Voltage | VOUT(SAT) | 250 | mV | IOUT = 5 mA, Output = on state (VOUT = Low) | ||
| Output On Voltage | VOUT(SAT) | 550 | mV | IOUT = 15 mA, Output = on state (VOUT = Low) | ||
| Output Current Limit | IOUT(LIM) | 30 | 80 | mA | Output = on state (VOUT = Low) | |
| Output Leakage Current | IOUT(OFF) | 10 | A | VOUT = 24 V, Output = off state (VOUT = High) | ||
| Output Rise Time | tr | 4 | s | Measured 10% to 90% of VOUT; RPU = 1 k; VPU = 5 V | ||
| Output Fall Time (A option) | tf | 2.5 | 5 | 9 | s | Measured 90% to 10% of VOUT; RPU = 1 k; VPU = 5 V |
| Output Fall Time (F option) | tf | 0.5 | 1.2 | 2.5 | s | Measured 90% to 10% of VOUT; RPU = 1 k; VPU = 5 V |
| Output Fall Time (A option) | tf | 8 | s | Measured 90% to 10% of VOUT; RPU = 1 k; VPU = 12 V | ||
| Output Fall Time (F option) | tf | 2 | s | Measured 90% to 10% of VOUT; RPU = 1 k; VPU = 12 V | ||
| PERFORMANCE CHARACTERISTICS | ||||||
| Operating Magnetic Input | Bpk-pk | 46 | 400 | G | TA = 25C | |
| Operating Magnetic Input | Bpk-pk | 36 | 400 | G | TA = 160C | |
| Operating Magnetic Range | B | 0 | 400 | G | Refer to Figure 4 | |
| Signal Bandwidth | BW | 8 | kHz | Equivalent to 3 dB cutoff frequency | ||
| Magnetic Temperature Coefficient (SmCo) | TCMAG | 0.03 | %/C | Optimized value | ||
| Magnetic Temperature Coefficient (NdFeB) | TCMAG | 0.12 | %/C | Optimized value | ||
| POWER-ON CHARACTERISTICS | ||||||
| Power-On Time | tPO | 1 | ms | VCC > VCC(MIN) | ||
| OPERATING MODE CHARACTERISTICS | ||||||
| Threshold Update Memory | 1 | 12 | tooth | Number of target teeth (peaks) stored in memory | ||
| Operate Point (U option) | BOP | 30 | % | % of peak-to-peak, referenced to tooth signal | ||
| Operate Point (M option) | BOP | 50 | % | % of peak-to-peak, referenced to tooth signal | ||
| Release Point (U option) | BRP | 30 | % | % of peak-to-peak, referenced to tooth signal | ||
| Release Point (M option) | BRP | 50 | % | % of peak-to-peak, referenced to tooth signal | ||
| Running Mode Hysteresis | BHYS(int) | 5 | 10 | 15 | % | % of peak-to-peak signal |
2410161750_ALLEGRO-A16311PUCATN-UP-T_C19761428.pdf
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