MLX91217 250 kHz Conventional Hall current sensor IC with improved diagnostics
The MLX91217 is part of the Gen 2.5 high speed current sensor IC portfolio, targeting primarily inverter/converter applications. With the Conventional Hall technology - using an external ferromagnetic core for signal concentration - currents can be measured in the range of ±50 A to ±5000 A. The magnetic flux density inside the airgap of the core is measured with embedded Hall-effect technology and amplified to a 5 V full-scale ratiometric and fast analog output. The novel CMOS Hall-effect sensor is offered with different factory trimmed offset, sensitivity and filtering settings, but are customer programmable using the Melexis programming equipment PTC-04.
Key features MLX91217
- Measurement range ±15 to ±450 mT
- High accuracy
- Fast response time < 3 μs
- AEC-Q100 Grade 0 qualified
- Broken wire diagnostics & clamping
- Programmable gain, offset, filtering, clamping, …
- Fast analog ratiometric output
- Wideband: DC to 250kHz
- Trim&Form options available
- 48bit unique ID for traceability
The main changes over the Gen 2 MLX91209 are:
- Higher accuracy
- Thermal offset drift of ±5 mV (50% improvement)
- Thermal sensitivity drift of ±1% (33% improvement)
- Improved diagnostics
- Broken Wire detection
- Programmable output clamping levels
- Extended on-chip filtering
The SIP4-VA package allows for insertion of the sensing elements into tight slots of the core, and several Trim&Form options of the sensor leads provide designers with higher flexibility for mechanical integration & assembly.
The following factory trim variants are available:
- MLX91217LVA-ACA-000 with 10 mV/mT sensitivity and bipolar output around 2.5 V
- MLX91217LVA-ACA-003 with 9 mV/mT sensitivity and bipolar output around 2.5 V
- MLX91217LVA-ACA-005 with 13 mV/mT sensitivity and bipolar output around 2.5 V
