Product Overview
The Allegro ACS70310/1 is a highly precise, programmable linear Hall-effect sensor IC designed for core-based current sensing applications. It integrates a Hall element with BiCMOS circuitry for a fully monolithic solution, offering an analog voltage output proportional to magnetic flux density. With factory-programmed temperature compensation, it achieves 1% sensitivity error and 5 mV offset error from -40C to 150C. The ACS70311 variant adds undervoltage detection (UVD) and low-voltage programming capabilities. These sensors are ideal for high-frequency automotive inverters and DC/DC converters due to their fast response time (2 s) and high operating bandwidth (DC to 240 kHz). They feature on-board supply regulation with reverse-battery protection, providing high immunity to electrical overstress (EOS) and surviving supply voltages of 18 V.
Product Attributes
- Brand: Allegro MicroSystems
- Certifications: AEC-Q100 Grade 0, automotive qualified
- Material: Lead (Pb) free, 100% matte tin leadframe plating
Technical Specifications
| Feature/Model | Description | Value | Unit |
|---|---|---|---|
| Product Series | ACS70310 / ACS70311 | ||
| Current Sensing Type | Hall-Effect, Core-Based | ||
| Output Type | Analog Voltage | ||
| Operating Bandwidth | DC to 240 | kHz | |
| Response Time | 2 | s | |
| Sensitivity Error (Factory Programmed) | Over Temperature (25C to 150C) | 1 | % |
| Offset Error (Factory Programmed) | Over Temperature (25C to 150C) | 5 | mV |
| Operating Temperature Range | -40 to 150 | C | |
| Supply Voltage Survival | VCC | 18 | V |
| Output Voltage Survival | VOUT | +16 to 6 | V |
| Package Type | 4-pin SIP | ||
| Package Suffix | KT, OK | ||
| Case Thickness | 1 | mm | |
| Noise (VIN) | TA = 25C, CL = 1 nF, Sens = 5 mV/G | 1.2 | mG/(Hz) |
| Propogation Delay (tpd) | TA = 25C, CL = 1 nF, RL= 10 k | 1.2 - 1.65 | s |
| Response Time (tRESPONSE) | TA = 25C, CL = 1 nF, RL= 10 k | 2.1 - 3 | s |
| Rise Time (tr) | TA = 25C, CL = 1 nF, RL= 10 k | 1.9 | s |
| Output Slew Rate (SR) | TA = 25C, CL = 1 nF, RL= 10 k | 410 - 550 | V/ms |
| Quiescent Output Voltage (VOUT(Q)) Bidirectional | TA = 25C | 2.495 - 2.505 | V |
| Quiescent Output Voltage (VOUT(Q)) Unidirectional | TA = 25C | 0.495 - 0.505 | V |
| Sensitivity Error (SensERR) | TA = 25C | -1 to 1 | % |
| Sensitivity Drift Over Temp (SensTC) | TA = 25C to 150C | -1 to 1 | % |
| Quiescent Voltage Output Error (VOUT(Q)ERR) | TA = 25C | -5 to 5 | mV |
| Quiescent Voltage Output Drift Over Temp (VOUT(Q)TC) | TA = 25C to 150C | -5 to 5 | mV |
| ACS70310LKTATN-001B5-C | Factory-Programmed Sensitivity | 1 | mV/G |
| ACS70310LKTATN-2P5B5-C | Factory-Programmed Sensitivity | 2.5 | mV/G |
| ACS70310LKTATN-005B5-C | Factory-Programmed Sensitivity | 5 | mV/G |
| ACS70310LKTATN-010B5-C | Factory-Programmed Sensitivity | 10 | mV/G |
| ACS70311LKTATN-001B5-C | Factory-Programmed Sensitivity | 1 | mV/G |
| ACS70311LKTATN-2P5B5-C | Factory-Programmed Sensitivity | 2.5 | mV/G |
| ACS70311LKTATN-005B5-C | Factory-Programmed Sensitivity | 5 | mV/G |
| ACS70311LKTATN-010B5-C | Factory-Programmed Sensitivity | 10 | mV/G |
| ACS70311LOKATN-001B5-C | Factory-Programmed Sensitivity | 1 | mV/G |
| ACS70311LOKATN-2P5B5-C | Factory-Programmed Sensitivity | 2.5 | mV/G |
| ACS70311LOKATN-005B5-C | Factory-Programmed Sensitivity | 5 | mV/G |
| ACS70311LOKATN-010B5-C | Factory-Programmed Sensitivity | 10 | mV/G |
| Low-Voltage Programming / UVD Capable | ACS70310 | No | |
| Low-Voltage Programming / UVD Capable | ACS70311 | Yes |
2401241357_ALLEGRO-ACS70311LKTATN-005B5-C_C3716343.pdf
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