CJMCU-758 ACS758LCB-050B-PFF-T ±50A Bidirectional Hall Current Sensor 120kHz 2.4kV Isolation AEC-Q100
CJMCU-758 ACS758LCB-050B-PFF-T ±50A Bidirectional Hall Current Sensor 120kHz 2.4kV Isolation AEC-Q100
Key Specifications Input Voltage: 3.0V–5.5V DC (5.5V max) Current Range: ±50A (bidirectional) Output Type: Ratiometric voltage (VCC/2 @ 0A) Sensitivity: 40mV/A (±1% linearity) Bandwidth: 120kHz (–3dB) Zero Current Output: VCC/2 (e.g., 2.5V @ 5V supply) Static Current: ≤13.5mA (idle) Isolation Voltage: 2.4kV RMS (1 min) Response Time: ≤4μs Operating Temp: –40°C to +150°C (AEC-Q100 automotive grade) Copper Path Resistance: 100μΩ (low power loss) Dimensions: 37×18mm (PCB mountable) Pin Functions VCC: Power supply input (3V–5.5V DC) GND: Ground reference VIOUT: Analog voltage output (0.3V–VCC-0.3V) IP+: Current input positive (connect to load/source) IP–: Current input negative (complete current path) FAQ Q1: Why does VIOUT read VCC/2 at zero current? Design feature: Outputs VCC/2 (e.g., 2.5V @5V) when no current flows. Voltage shifts ±2V (±50A) proportionally. Q2: Can it measure AC current? Yes! Bandwidth supports 50/60Hz AC (max 120kHz). Use VIOUT–VCC/2 for bidirectional measurement. Q3: How to reduce electrical noise? Add RC filter (e.g., 1kΩ + 100nF) on VIOUT. Ensure power supply ripple <50mV. Q4: Why avoid >5.5V supply? Exceeding 5.5V risks IC damage. For 12V/24V systems, use LDO regulator (e.g., AMS1117-5.0). Q5: Isolation failed after 50A surge? Copper path tolerates 2× overload (100A). Check IP+/IP– traces for thermal damage; max ambient temp ≤150°C.
Product Features
- High Accuracy Current Detection 10-bit resolution; 0.1% linearity; 40mV/A sensitivity; factory calibrated for precision; Suitable for industrial and consumer applications
- Wide Operating Range & Stability -40C to +150C; 2.4kV isolation voltage; 120kHz bandwidth; stable performance under high overcurrent conditions
- Low Power Consumption & Efficient Design 13.5mA static current; 100 copper path resistance; 72-hour operation with 2000mAh battery; low power loss
- Easy Integration & Compatibility PCB mountable; compatible with STM32, Arduino, Raspberry Pi; ratiometric output (VCC/2 at 0A); simple setup required
- Robust Build & Reliable Performance Lead-free construction; 2 overload tolerance (100A); thermal protection; no calibration drift; suitable for long-term use