TPAFE411 HALL Sensor Signal Conditioning IC
■The TPAFE411 is designed only for Hall elements to use in closed-loop current-sensor modules. The internal precision excitation circuitry for the Hall-element could effectively eliminate the offset and offset-drift of the Hall element. The TPAFE411 also provides a 350mA H-bridge for driving the sensor compensation coil, and an internal precision current sensing amplifier to generate the output signal.
■There is a high accuracy voltage reference, high accuracy HALL Sensor front end and precision current sensing amplifier inside TPAFE411. These techniques significantly improve the accuracy of the overall current-sensor module. When the power supply is 5V, the output voltage is pin-selectable to support a 2.5V output. When the power supply is 3.3V, the output voltage is to support a 1.65V output.
■For the heat dissipation, 4mm × 4-mm QFN package with PowerPAD is selected for the TPAFE411. The TPAFE411 is specified to work over industrial temperature range of –40℃ to +125℃.
●Features
■Internal Precision Voltage Reference
▲Accuracy: 0.2% (max)
▲Temp Drift: 50ppm (max)
▲Pin Selectable for 2.5V, 1.65V, and Ratio Metric
■Switching Current HALL Sensor Excitation
▲Reduce HALL Sensor Offset and Drift
▲Reduce HALL Sensor 1/f Noise
■Extended Current Measurement Range
▲H-Bridge Drive Capability: 350 mA
■Precision Current Sensing Amplifier
▲Offset and Drift: 100μV and 2μV/℃ (Max)
▲Bandwidth: 200kHz
■Overrange and Error Flags
■Power Supply: 2.7V to 5.5V
■Package: QFN 4mm x 4mm with PowerPAD
■Temp Range: –40℃ to +125℃
Datasheet |
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Please see the document for details |
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QFN;QFN4X4-20 |
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English Chinese Chinese and English Japanese |
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2021/12/1 |
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Rev.A.1 |
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1.7 MB |
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