Product Overview
The Allegro A1366 is a factory-programmable linear Hall-effect current sensor IC designed for high accuracy and resolution in demanding applications. It features proprietary linearly interpolated temperature compensation technology, ensuring virtually flat sensitivity and offset across its operating temperature range. This IC is ideal for current sensing in HEV inverters, DC-to-DC converters, and electric power steering (EPS) systems. It offers a ratiometric voltage output proportional to the applied magnetic field, with factory-programmed high resolution for accuracy better than 1% typical over temperature. Advanced internal circuitry, including a low-noise amplifier and dynamic offset cancellation, provides industry-leading sensing resolution at a 120 kHz bandwidth. Integrated broken ground wire detection enhances reliability in automotive environments.
Product Attributes
- Brand: Allegro
- Technology: Linear Hall-effect
- Compensation: Proprietary linearly interpolated temperature compensation
- Programming: Factory-programmable
- Output: Ratiometric analog voltage
- Certifications: AEC-Q100 automotive qualified
- Package: 4-pin SIP (suffix KT)
- Leadform Options: TN (Straight), TH
Technical Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 4.5 | 5.0 | 5.5 | V | |
| Supply Current | ICC | No load on VOUT | 10 | 15 | mA | |
| Internal Bandwidth | BWi | Small signal, 3 dB, CL = 1 nF, TA = 25C | 120 | kHz | ||
| Propagation Delay Time | tPD | TA = 25C, magnetic field step of 320 G, CL = 1 nF, Sens = 2.5 mV/G | 2.2 | s | ||
| Rise Time | tR | TA = 25C, magnetic field step of 320 G, CL = 1 nF, Sens = 2.5 mV/G | 3.6 | s | ||
| Response Time | tRESPONSE | TA = 25C, magnetic field step of 320 G, CL = 1 nF, Sens = 2.5 mV/G | 3.7 | s | ||
| Noise | BN | TA = 25C, CL = 1 nF, Bandwidth = BWi | 1.1 | mGRMS/(Hz) | ||
| Operating Ambient Temperature | TA | 40 | 150 | C | ||
| Storage Temperature | Tstg | 65 | 165 | C | ||
| Model | Leadform | Package | Sensitivity (Typ.) | Unit | ||
| A1366LKTTN-1-T | TN (Straight) | 4-pin SIP | 1 | mV/G | ||
| A1366LKTTN-2-T | TN (Straight) | 4-pin SIP | 2.5 | mV/G | ||
| A1366LKTTN-5-T | TN (Straight) | 4-pin SIP | 5 | mV/G | ||
| A1366LKTTN-10-T | TN (Straight) | 4-pin SIP | 10 | mV/G |
2401220948_ALLEGRO-A1366LKTTF-5-T_C19761417.pdf
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