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DRV421RTJT, Board Mount Current Sensors Integrated Fluxgate Magnetic Sensor IC for Closed-Loop Applications 20-QFN -40 to 125
Sensors\Current Sensors\Board Mount Current SensorsDRV421 Closed-Loop Current Sensing IC
Texas Instruments DRV421 Closed-Loop Current Sensing IC is designed for magnetic closed-loop current sensing solutions. This enables isolated, precise dc- and ac-current measurements. This provides both, a proprietary integrated fluxgate sensor, and the required analog signal conditioning, thus minimizing component count and cost. The low offset and drift of the fluxgate sensor, along with an optimized front-end circuit results in unrivaled measurement precision. This device provides all the necessary circuit blocks to drive the current-sensing feedback loop. The sensor front-end circuit is followed by a filter that can be configured to work with a wide range of magnetic cores. The integrated 250mA H-Bridge drives the compensation coil while doubling the current measurement range, compared to conventional single-ended drive methods. The device also provides a precision voltage reference and shunt sense amplifier. This allows the device to generate and drive the analog output signal.
| Accuracy | 2% |
| Brand | Texas Instruments |
| Current Rating | 250 mA |
| Factory Pack Quantity: Factory Pack Quantity | 250 |
| Manufacturer | Texas Instruments |
| Maximum Operating Temperature | +125 C |
| Minimum Operating Temperature | -40 C |
| Moisture Sensitive | Yes |
| Operating Supply Voltage | 5.5 V |
| Output Type | Analog-Current |
| Package / Case | QFN-20 |
| Packaging | Reel, Cut Tape |
| Product Category | Board Mount Current Sensors |
| Product Type | Current Sensors |
| Sensor Type | Closed Loop |
| Series | DRV421 |
| Subcategory | Sensors |
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