CA‐IS23050W Precision 120kHz Hall Effect Current Sensor with 5kVRMS Reinforced Isolation Voltage and Zero Current Output Voltage Reference 

The CA‐IS23050W is a highly accurate and cost effective current sensor IC suitable for AC/DC current sensing in a variety of industrial, commercial, and communications systems. It features a low‐offset, linear Hall sensor circuit and a copper conduction path that generates a magnetic field when current flows through it. The integrated Hall IC senses this magnetic field and converts it into a proportional voltage output, which has a positive slope proportional to the current flowing through the primary copper conduction path. The device senses current differentially, rejecting common‐mode fields and improving accuracy in magnetically noisy environments. With its 0.61mΩ internal resistance, the primary copper conduction path offers low power loss and high inrush current withstand capability. The CA‐IS23050W is available in a 16‐pin wide‐body SOIC packages. The CA‐IS23050W is rated for operation at working ambient temperatures of ‐40°C to +125°C.

The internal conductor of the CA-IS23050W generates a magnetic field proportional to the current value, according to Maxwell’s equations. The sensor converts this magnetic field value into a voltage output, ensuring a high level of accuracy. Moreover, the sensor has an ultra‐small resistor value, ensuring little influence on thermal power consumption.

1. Features

• Differential hall sensing rejects common‐mode fields and nearly zero magnetic hysteresis
• Integrated digital temperature compensation circuitry allows for near closed loop accuracy
• High immunity to external magnetic fields
• Precision zero‐current reference output
• Primary conductor resistance: 0.61mΩ
• High current sense range capability: ±50APK
• High accuracy
• • Total output error: ±3% Max@25°C to +125°C
  • Total output error lifetime drift: ±5% Max
  • Sensitivity error: ±2.5% Max@25°C to +125°C
  • Non‐linearity: ±1% Max
  • Symmetry: ±1% Max

• Fast response
• • Signal bandwidth: 120kHz
  • Propagation delay: 2µs
  • Response time: 3.7µs

• Operating supply voltage: 4.5V to 5.5V
• Bidirectional and unidirectional current sensing
• ‐40°C to +125°C Working Ambient Temperature Range
• Robust Galvanic Isolation
• • 5000VRMS withstand isolation voltage
  • 1097VRMS maximum working isolation voltage
  • 10kV maximum surge isolation withstand voltage

• 16‐pin wide‐body SOIC16 (W) Package
• Safety regulatory approvals
• • 5kVRMS isolation for 1 minute according to UL1577

2. Applications 

• Solar Energy
• Motor Control
• EC Charging
• Power supplies
• Industrial AC/DC and DC/DC