Product Overview
The Allegro A1366 is a factory-programmable linear Hall-effect current sensor IC designed for high accuracy and resolution in current sensing applications. It features proprietary linearly interpolated temperature compensation technology, ensuring virtually flat sensitivity and offset across the operating temperature range. This IC is ideal for demanding applications such as HEV inverters, DC-to-DC converters, and electric power steering (EPS). Its ratiometric voltage output is proportional to the applied magnetic field, with factory-programmed sensitivity and quiescent voltage for accuracy of less than 1% typical over temperature. The sensor incorporates a highly sensitive Hall element with a low-noise BiCMOS interface, offering industry-leading sensing resolution at a 120 kHz bandwidth. Built-in broken ground wire detection enhances reliability in automotive environments.
Product Attributes
- Brand: Allegro
- Package Type: 4-pin SIP (suffix KT)
- Leadform Options: TN (Straight), TH
- Material: Lead (Pb) free with 100% matte tin leadframe plating
- Certifications: AEC-Q100 automotive qualified
Technical Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit | |
|---|---|---|---|---|---|---|---|
| ELECTRICAL CHARACTERISTICS | |||||||
| 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 | |||
| OUTPUT CHARACTERISTICS | |||||||
| Noise | BN | TA = 25C, CL = 1 nF, Bandwidth = BWi | 1.1 | mGRMS/(Hz) | |||
| Output Load Resistance (Pull-down) | RL(PULLDWN) | VOUT to GND | 4.7 | k | |||
| PERFORMANCE CHARACTERISTICS (Example for A1366LKT-1-T) | |||||||
| Sensitivity | SensTA | Measured using 600 G, TA = 25C | 0.975 | 1 | 1.025 | mV/G | |
| Sensitivity Drift through Temperature Range | SensTC | TA = 25C to 150C | 2.5 | 0 | 2.5 | % | |
| Quiescent Output Voltage | VOUT(Q)TA | TA = 25C | 2.490 | 2.500 | 2.510 | V | |
| Package Dimensions | See Package Outline Drawing | ||||||
| Operating Ambient Temperature | TA | 40 | 150 | C | |||
| Storage Temperature | Tstg | 65 | 165 | C | |||
2401220948_ALLEGRO-A1366LKTTG-10-T_C19761419.pdf
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