DRV421RTJR
ActiveINTEGRATED FLUXGATE MAGNETIC SENSOR IC FOR CLOSED-LOOP APPLICATIONS
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DRV421RTJR
ActiveINTEGRATED FLUXGATE MAGNETIC SENSOR IC FOR CLOSED-LOOP APPLICATIONS
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Technical Specifications
Parameters and characteristics for this part
| Specification | DRV421RTJR |
|---|---|
| Accuracy | 0.02 % |
| For Measuring | AC/DC |
| Linearity | 0.3 % |
| Mounting Type | Surface Mount |
| Number of Channels | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Output | Voltage, Ratiometric |
| Package / Case | 20-WFQFN Exposed Pad |
| Polarization | Bidirectional |
| Sensor Type | Flux Gate, Closed Loop |
| Supplier Device Package | 20-QFN (4x4) |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 3000 | $ 3.50 | |
| Texas Instruments | LARGE T&R | 1 | $ 4.55 | |
| 100 | $ 3.71 | |||
| 250 | $ 2.92 | |||
| 1000 | $ 2.48 | |||
Description
General part information
DRV421 Series
The DRV421 is designed for magnetic closed-loop current sensing solutions, enabling isolated, precise dc- and ac-current measurements. This device 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.
The DRV421 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 250-mA 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 to generate and drive the analog output signal.
The DRV421 is designed for magnetic closed-loop current sensing solutions, enabling isolated, precise dc- and ac-current measurements. This device 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.
Documents
Technical documentation and resources
