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). It offers a ratiometric voltage output proportional to the applied magnetic field, with factory-programmed sensitivity and quiescent voltage for accuracy of less than 1% typical over temperature. Advanced features include a low-noise amplifier, dynamic offset cancellation, high bandwidth (120 kHz), and built-in broken ground wire detection for enhanced reliability in automotive environments.
Product Attributes
- Brand: Allegro
- Technology: Linear Hall-effect sensor IC
- Programming: Factory-programmable
- Compensation: Proprietary linearly interpolated temperature compensation
- Certifications: AEC-Q100 automotive qualified
- Package Material: Lead (Pb) free, 100% matte tin leadframe plating
- Package Type: 4-pin SIP (Single In-line Package)
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 | |
| Power-On Time | tPO | TA = 25C, CBYPASS = Open, CL = 1 nF, Sens = 2.5 mV/G, constant magnetic field of 320 G | 78 | s | ||
| Temperature Compensation Power-On Time | tTC | TA = 150C, CBYPASS = Open, CL= 1 nF, Sens = 2.5 mV/G, constant magnetic field of 320 G | 30 | s | ||
| Undervoltage Lockout (UVLO) Threshold | VUVLOH | TA = 25C, VCC rising and device function enabled | 4 | V | ||
| Undervoltage Lockout (UVLO) Threshold | VUVLOL | TA = 25C, VCC falling and device function disabled | 3.5 | V | ||
| Internal Bandwidth | BWi | Small signal 3 dB, CL = 1 nF, TA = 25C | 120 | kHz | ||
| OUTPUT CHARACTERISTICS | ||||||
| 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 | ||
| Broken Wire Voltage (High Load to VCC) | VBRK(HIGH) | TA = 25C, RL(PULLUP) = 10 k to VCC | VCC | V | ||
| Broken Wire Voltage (Low Load to GND) | VBRK(LOW) | TA = 25C, RL(PULLDWN) = 10 k to GND | 100 | mV | ||
| PERFORMANCE CHARACTERISTICS (TA = 40C to 150C) | ||||||
| Sensitivity (1 G = 0.1 mT) | 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 |
| Models / Sensitivities | ||||||
| A1366LKTTN-1-T | TN (Straight) Leadform, 4-pin SIP | 1 | mV/G | |||
| A1366LKTTN-2-T | TN (Straight) Leadform, 4-pin SIP | 2.5 | mV/G | |||
| A1366LKTTN-5-T | TN (Straight) Leadform, 4-pin SIP | 5 | mV/G | |||
| A1366LKTTN-10-T | TN (Straight) Leadform, 4-pin SIP | 10 | mV/G | |||
| PACKAGE OUTLINE DRAWING (KT, 4-Pin SIP) | ||||||
| Case Thickness | 1.00 | mm | ||||
| Leadform | TN (Straight) | |||||
2401220948_ALLEGRO-A1366LKTTG-5-T_C19761421.pdf
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