Not recommended for new designs. Similar functionality provided by the MLX90290

The MLX90242 is a fix-programmed Linear Hall-effect sensor with a ratiometric analog output, available in different versions depending on the nominal sensitivity and the package type (SOT-23 Surface-Mount or 3-SIP-UA through-hole). It features active error correction circuitry (Hall plate quadrature spinning current and chopper-stabilized amplifier), which virtually eliminates the offset errors normally associated with Hall-effect devices.

• Linear Hall-effect sensor
• Ratiometric analog output for A/D interface
• Small plastic packages: SOT-23 (SMD) and 3-SIP-UA (THD)
• RoHS compliant TSOT package
• Low output quiescent voltage (Voq) thermal drift
• Quad switched Hall plate/Chopper stabilized amplifier

• Rotary position sensor
• Linear position sensor
• Current sensing

The MLX90242 is a CMOS Linear Hall Effect sensor IC. It possesses active error correction circuitry which virtually eliminates the offset errors normally associated with analog Hall Effect devices. The ratiometric output voltage is proportional to the supply voltage. When using the supply voltage as a reference for an A/D converter, fluctuations of ±10% in supply voltage will not affect accuracy. For a positive slope, the voltage at the output will increase as a South magnetic field is applied to the branded face of the MLX90242. Conversely, the voltage output will decrease in the presence of a North magnetic field. For a negative slope, the voltage at the output will increase as a North magnetic field is applied to the branded face of the MLX90242. Conversely, the voltage output will decrease in the presence of a South magnetic field.The ratiometric output voltage is proportional to the supply voltage. When using the supply voltage as a reference for an A/D converter, fluctuations of ±10% in supply voltage will not affect accuracy. When programmed for a conventional sensitivity (with a positive gain), the voltage at the output will increase as a South magnetic field is applied to the branded face of the MLX90215. Conversely, the voltage output will decrease in the presence of a North magnetic field. The MLX90215 has a sensitivity drift of less than +1% error, and VOQ stability drift of less than +0.4% error, over a broad temperature range.