MT9221 Datasheet | MagnTek

Description The Magn Tek® MT9221 product series is a fully integrated Hall Effect-based isolated linear current sensor device family designed for AC or DC current sensing in industrial, mercial, and munications systems. Each of the MT9221 consists of a precise, lowoffset, linear Hall circuit with a low-resistance current conductor path located near the surface of the die. Applied current flowing through this low-resistance current conductor path generates a magnetic field that the Hall IC converts into a proportional voltage. The current is sensed differentially in order to reject mon-mode fields, improving accuracy in magnetically noisy environments. Device accuracy is optimized through the close proximity of the magnetic field to the Hall transducer. A precise, proportional voltage is provided by the lowoffset, chopper-stabilized BCD Hall IC, which has been accurately calibrated when it is manufactured. The output of the device has a positive slope (>VOQ) when an increasing current flows through the primary current conduction path (from pins 1 and 2, to pins 3 and 4). The internal resistance of this conductive path is 1.5 mΩ typical, providing low-power loss. The terminals of the conductive path are electrically isolated from the signal leads (pins 5 through 8). This allows the MT9221 current sensor IC to be used in high-side current sense applications without use other costly isolation techniques. The MT9221 family provides a SOP-8 package for surface mount device to customers. The packages is Ro HS pliant. 2 Features ￭ ±1.9% Typical Total Output Error ￭ ±0.5% Typical Linearity Over Temperature ￭ Fast Output Response Time: 4 μs (typ.) ￭ 150k Hz Signal Bandwidth ￭ 5.0V Single Supply Operation ￭ -40℃~125℃ Operating Temperature ￭ Primary Conductor Resistance ---1.0mΩ (SOP-8) ￭ Sensing Current Range: ---±10A, ±20A, ±25A, ±30A ---+20A, +30A ￭ Output Voltage Proportional to AC or DC Current ￭ Ratiometric Output from Supply Voltage ￭ Extremely Stable Quiescent Output...