Product Overview
The Allegro A1308 and A1309 are high-accuracy, temperature-stable linear Hall-effect sensor ICs designed for applications requiring precise displacement and angular position sensing. Featuring miniature package options, these devices offer a voltage output proportional to the applied magnetic field, with a quiescent voltage output (QVO) centered around 50% of the supply voltage. Enhanced accuracy is achieved through end-of-line optimization and nonvolatile memory programming for sensitivity and QVO. These ratiometric sensors are ideal for demanding automotive and industrial applications, operating across an extended temperature range of -40C to 150C. They integrate a Hall element, temperature-compensating circuitry, a high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique.
Product Attributes
- Brand: Allegro
- Technology: BiCMOS monolithic circuit
- Lead-Free: Yes (100% matte-tin leadframe plating)
Technical Specifications
| Model | Output Polarity | Sensitivity (typ) (mV/G) | Operating Ambient Temperature Range (C) | Package Type | Package Dimensions (mm) | Packing |
|---|---|---|---|---|---|---|
| A1308KUA-2-T | Forward | 2.5 | 40 to 125 | 3-pin SIP (through hole) | 1.5 4 3 | 500 pieces per bag |
| A1308KUATN-1-T | Forward | 1.3 | 40 to 125 | 3-pin SIP (through hole) | 1.5 4 3 | 4,000 pieces per reel |
| A1308KUATN-2-T | Forward | 2.5 | 40 to 125 | 3-pin SIP (through hole) | 1.5 4 3 | 4,000 pieces per reel |
| A1308KUATN-3-T | Forward | 3.125 | 40 to 125 | 3-pin SIP (through hole) | 1.5 4 3 | 4,000 pieces per reel |
| A1308KUATN-5-T | Forward | 5 | 40 to 125 | 3-pin SIP (through hole) | 1.5 4 3 | 4,000 pieces per reel |
| A1308LLHLX-05-T | Forward | 0.5 | 40 to 150 | 3-pin SOT-23W (surface mount) | 2 3 1 | 10,000 pieces per reel |
| A1308LLHLX-1-T | Forward | 1.3 | 40 to 150 | 3-pin SOT-23W (surface mount) | 2 3 1 | 10,000 pieces per reel |
| A1308LLHLX-2-T | Forward | 2.5 | 40 to 150 | 3-pin SOT-23W (surface mount) | 2 3 1 | 10,000 pieces per reel |
| A1308LLHLX-3-T | Forward | 3.125 | 40 to 150 | 3-pin SOT-23W (surface mount) | 2 3 1 | 10,000 pieces per reel |
| A1308LLHLX-5-T | Forward | 5 | 40 to 150 | 3-pin SOT-23W (surface mount) | 2 3 1 | 10,000 pieces per reel |
| A1309KUATN-9-T | Forward | 9 | 40 to 125 | 3-pin SIP (through hole) | 1.5 4 3 | 4,000 pieces per reel |
| A1309LLHLX-9-T | Forward | 9 | 40 to 150 | 3-pin SOT-23W (surface mount) | 2 3 1 | 10,000 pieces per reel |
| A1309LLHLX-RP9-T | Reverse | 9 | 40 to 150 | 3-pin SOT-23W (surface mount) | 2 3 1 | 10,000 pieces per reel |
| A1309LUA-2-T | Forward | 2.5 | 40 to 150 | 3-pin SIP (through hole) | 1.5 4 3 | 500 pieces per bag |
| General Electrical Characteristics | ||||||
| Supply Voltage (VCC) | 4.5 - 5.5 V | Supply Current (ICC) | 9 - 11.5 mA | Internal Bandwidth (BWi) | - 20 kHz | Chopping Frequency (fC) |
| Undervoltage Threshold (VUVLOHI) | - - 3 V | Undervoltage Threshold (VUVLOLO) | 2.5 - - V | Power-On Time (tPO) | - 50 s | VCC Ramp Time (tVCC) |
| VCC Off Level (VCCOFF) | 0 - 0.55 V | Delay to Clamp (tCLP) | - 30 s | Supply Zener Clamp Voltage (VZ) | 6 - 7.3 V | Output Referred Noise (VN) |
| Input Referred RMS Noise Density (VNRMS) | 1.5 - 2.5 mG/Hz | DC Output Resistance (ROUT) | - 3 | Output Load Resistance (RL) | 4.7 k | Output Load Capacitance (CL) |
| Output Voltage Clamp High (VCLPHIGH) | 4.35 - 4.65 V | Output Voltage Clamp Low (VCLPLOW) | 0.40 - 0.70 V | |||
| Output Characteristics | ||||||
| Quiescent Voltage Output (VOUT(Q)) | 2.488 - 2.512 V (at 25C) | Sensitivity Temperature Coefficient (TCSens) | 0.08 - 0.16 %/C | Linearity Sensitivity Error (LinERR) | 1.5 % | Symmetry Sensitivity Error (SymERR) |
| Ratiometry Quiescent Voltage Output Error (RatVOUT(Q)) | 1.5 % | Ratiometry Sensitivity Error (RatSens) | 1.5 % | Ratiometry Clamp Error (RatVOUTCLP) | 1.5 % | |
| Drift Characteristics | ||||||
| Typical Quiescent Voltage Output Drift Across Temperature Range (VOUT(Q)) | Varies by model (e.g., -15 to 15 mV for A1308KUA-1-T at 125C, -30 to 0 mV for A1308LLHLX-5-T at 150C) | |||||
| Sensitivity Drift Due to Package Hysteresis (SensPKG) | 2 % | |||||
| Operating Conditions | ||||||
| Operating Ambient Temperature Range (TA) - K Option | 40C to 125C | |||||
| Operating Ambient Temperature Range (TA) - L Option | 40C to 150C | |||||
| Maximum Junction Temperature (TJ(max)) | 165 C | |||||
| Storage Temperature (Tstg) | 65C to 170 C | |||||
2304140030_ALLEGRO-A1308LLHLX-05-T_C2152984.pdf
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