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 its operating temperature range. This IC is ideal for demanding applications such as HEV inverters, DC-to-DC converters, and electric power steering (EPS). With a ratiometric voltage output proportional to the applied magnetic field, it offers excellent accuracy (typically less than 1% over temperature) and industry-leading sensing resolution at a 120 kHz bandwidth. Built-in broken ground wire detection enhances reliability in automotive environments.
Product Attributes
- Brand: Allegro
- Technology: Linear Hall-effect
- Programming: Factory-programmable
- Temperature Compensation: Proprietary linearly interpolated
- Output Type: Ratiometric voltage output
- Certifications: AEC-Q100 automotive qualified
- Package: 4-pin SIP (suffix KT)
- Leadform Options: TN (Straight), TH
- Material: Lead (Pb) free, 100% matte tin leadframe plating
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) | ||
| Broken Wire Voltage (High) | VBRK(HIGH) | TA = 25C, RL(PULLUP) = 10 k to VCC | VCC | V | ||
| Broken Wire Voltage (Low) | VBRK(LOW) | TA = 25C, RL(PULLDWN) = 10 k to GND | 100 | mV | ||
| Performance Characteristics (TA = 40C to 150C) | ||||||
| Sensitivity (Typ. 1 mV/G model) | 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 (Typ.) | VOUT(Q)TA | TA = 25C | 2.490 | 2.500 | 2.510 | V |
| Package Dimensions | ||||||
| Case Thickness | 1.00 | mm | ||||
| Operating Ambient Temperature | TA | -40 | 150 | C | ||
Selection Guide:
| Part Number | Leadform | Package | Sensitivity (Typ.) (mV/G) |
|---|---|---|---|
| A1366LKTTN-1-T | TN (Straight) | 4-pin SIP | 1 |
| A1366LKTTN-2-T | TN (Straight) | 4-pin SIP | 2.5 |
| A1366LKTTN-5-T | TN (Straight) | 4-pin SIP | 5 |
| A1366LKTTN-10-T | TN (Straight) | 4-pin SIP | 10 |
2401220948_ALLEGRO-A1366LKTTF-2-T_C19761416.pdf
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