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 magnetic field, it offers industry-leading sensing resolution at a 120 kHz bandwidth, enhanced by advanced noise reduction and dynamic offset cancellation techniques. Built-in broken ground wire detection and undervoltage lockout contribute to its high reliability in automotive environments.
Product Attributes
- Brand: Allegro
- Package Type: 4-pin SIP (suffix KT)
- Leadform Options: TN (Straight), TH
- Material: Lead (Pb) free, 100% matte tin leadframe plating
- Certifications: AEC-Q100 automotive qualified
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 | ||
| Output Saturation Voltage (HIGH) | VSAT(HIGH) | TA = 25C, RL(PULLDWN) = 10 k to GND | 4.7 | V | ||
| Output Saturation Voltage (LOW) | VSAT(LOW) | TA = 25C, RL(PULLUP) = 10 k to VCC | 400 | mV | ||
| 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 | ||
| 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 | ||
| Package Thermal Resistance | RJA | On 1-layer PCB with exposed copper limited to solder pads | 174 | C/W | ||
| Model | Leadform | Package | Sensitivity (Typ.) | Packing | ||
| A1366LKTTN-1-T | TN (Straight) | 4-pin SIP | 1 mV/G | 4000 pieces per 13-inch reel | ||
| A1366LKTTN-2-T | TN (Straight) | 4-pin SIP | 2.5 mV/G | 4000 pieces per 13-inch reel | ||
| A1366LKTTN-5-T | TN (Straight) | 4-pin SIP | 5 mV/G | 4000 pieces per 13-inch reel | ||
| A1366LKTTN-10-T | TN (Straight) | 4-pin SIP | 10 mV/G | 4000 pieces per 13-inch reel |
2401220948_ALLEGRO-A1366LKTTG-1-T_C19761418.pdf
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