Product Overview
The Allegro A1318 and A1319 are linear Hall-effect sensor ICs designed for high-accuracy displacement and angular position sensing. These temperature-stable devices feature non-volatile memory for optimizing sensitivity and quiescent voltage output (QVO), ensuring sustained performance across a wide operating temperature range of 40C to 150C. They offer a ratiometric voltage output proportional to the applied magnetic field, with QVO adjusted around 50% of the supply voltage. Ideal for demanding automotive and industrial applications, these sensors are available in miniature surface-mount (SOT23-W) and through-hole (SIP) packages. Key benefits include enhanced accuracy through end-of-line optimization, temperature-stable performance, precise recoverability after temperature cycling, and integrated short-circuit diagnostic capabilities via output voltage clamps.
Product Attributes
- Brand: Allegro MicroSystems
- Product Status: Not for New Design (NND) - Sale restricted to existing customer applications.
- Material: Lead (Pb) free packages with 100% matte-tin leadframe plating.
Technical Specifications
| Model | Description | Sensitivity (typ) | Package Type | Package Dimensions (mm) | Supply Voltage (VCC) | Operating Temperature Range | Output Type |
|---|---|---|---|---|---|---|---|
| A1318 / A1319 | Linear Hall-Effect Sensor ICs with Analog Output | 1.35 mV/G (A1318) | 3-pin SOT-23-W (LH) | 2.00 x 3.00 x 1.00 | 3.0 V to 3.63 V | 40C to 150C | Analog Voltage Output |
| A1318 / A1319 | Linear Hall-Effect Sensor ICs with Analog Output | 2.5 mV/G (A1318) | 3-pin SIP (UA) | 1.50 x 4.00 x 3.00 | 3.0 V to 3.63 V | 40C to 150C | Analog Voltage Output |
| A1318 / A1319 | Linear Hall-Effect Sensor ICs with Analog Output | 5 mV/G (A1319) | 3-pin SOT-23-W (LH) | 2.00 x 3.00 x 1.00 | 3.0 V to 3.63 V | 40C to 150C | Analog Voltage Output |
| A1318 / A1319 | Linear Hall-Effect Sensor ICs with Analog Output | 5 mV/G (A1319) | 3-pin SIP (UA) | 1.50 x 4.00 x 3.00 | 3.0 V to 3.63 V | 40C to 150C | Analog Voltage Output |
| A1318 / A1319 | Quiescent Voltage Output (QVO) | 1.65 V (typ) | N/A | N/A | 3.3 V | 40C to 150C | Analog Voltage Output |
| A1318 / A1319 | Sensitivity Temperature Coefficient (TCSens) | 0.08 to 0.16 %/C | N/A | N/A | 3.3 V | 150C (programmed) | Analog Voltage Output |
| A1318 / A1319 | Internal Bandwidth (BWi) | 20 kHz (3 dB) | N/A | N/A | 3.3 V | N/A | Analog Voltage Output |
| A1318 / A1319 | Chopping Frequency (fC) | 400 kHz | N/A | N/A | 3.3 V | 25C | Analog Voltage Output |
| A1318 / A1319 | Output Referred Noise (VN) | 13 mV(p-p) (typ) | N/A | N/A | 3.3 V | 25C | Analog Voltage Output |
| A1318 / A1319 | Undervoltage Lockout (UVLO) | VUVLOHI: Max 3 V, VUVLOLO: Min 2.5 V | N/A | N/A | N/A | N/A | Analog Voltage Output |
| A1318 / A1319 | Output Voltage Clamps | VCLPHIGH: 2.842 to 3.069 V, VCLPLOW: 0.264 to 0.462 V (at 400 G, VCC=3.3V) | N/A | N/A | 3.3 V | 25C | Analog Voltage Output |
2311160807_ALLEGRO-A1318LLHLX-1-T_C17629113.pdf
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