CH701W 4800V-RMS Isolation, Hall Current Sensor IC in SO16 Package
2022-04-20
■Description:
●The CH701W current sensor IC is an economical and precise solution for AC or DC current sensing in industrial, automotive, commercial, and communications systems. The small package is ideal for space-constrained applications while also saving costs due to reduced board area.
●The device consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BCD Hall IC, which is programmed for accuracy after packaging. The output of the device has a positive slope when an increasing current flow through the primary copper conduction path (from pins 1 ,2, 3, and 4, to pins 5, 6, 7 and 8), which is the path used for current sensing. The internal resistance of this conductive path is 0.8 mΩ typical, providing low power loss.
■Features:
●Reinforced isolation: 4800V-RMS
●AEC-Q100 qualified
●Primary conductor resistance: 0.8 mΩ
●Single supply: 3.3V or 5V
●Output voltage proportional to AC or DC current: ±5A, ±10A, ±20A, ±30A, ±40A, ±50A, ±60A, ±70A
●Bandwidth: 120 kHz
●Response time: 4 us
●Ratio-metric output from supply voltage
●Adjustable bandwidth and resolution with a filter pin
●Small-footprint SOIC-16 package suitable for replacing bulky transformers or shunt current sensing solutions
●Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients
●Factory-trimmed sensitivity and quiescent output voltage for improved accuracy
●Chopper stabilization results in extremely stable quiescent output voltage
●The CH701W current sensor IC is an economical and precise solution for AC or DC current sensing in industrial, automotive, commercial, and communications systems. The small package is ideal for space-constrained applications while also saving costs due to reduced board area.
●The device consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BCD Hall IC, which is programmed for accuracy after packaging. The output of the device has a positive slope when an increasing current flow through the primary copper conduction path (from pins 1 ,2, 3, and 4, to pins 5, 6, 7 and 8), which is the path used for current sensing. The internal resistance of this conductive path is 0.8 mΩ typical, providing low power loss.
■Features:
●Reinforced isolation: 4800V-RMS
●AEC-Q100 qualified
●Primary conductor resistance: 0.8 mΩ
●Single supply: 3.3V or 5V
●Output voltage proportional to AC or DC current: ±5A, ±10A, ±20A, ±30A, ±40A, ±50A, ±60A, ±70A
●Bandwidth: 120 kHz
●Response time: 4 us
●Ratio-metric output from supply voltage
●Adjustable bandwidth and resolution with a filter pin
●Small-footprint SOIC-16 package suitable for replacing bulky transformers or shunt current sensing solutions
●Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients
●Factory-trimmed sensitivity and quiescent output voltage for improved accuracy
●Chopper stabilization results in extremely stable quiescent output voltage
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