Hall encoder's 10-bit angle detection saves energy
A hall encoder, claimed to save energy, has been introduced by iC-Haus. The iC-TW11, which allows for a 10-bit angle detection, has a sampling rate and 10Hz, with an average current consumption of typically 3μA. In standby mode between measuring cycles the idle current cuts back to approximately 100nA. In normal operation the iC-TW11 supports sampling rates of 4kHz with an activated filter and automatic amplifier gain for 10-bit resolution at maximum accuracy.
A measuring cycle can be operated via either the hall encoder's SPI interface or a separate trigger input by an external event.
A new position value is being signalled to the micro controller via interrupt. The 4-wire SPI interface can be operated with up to 16MHz clock frequency. The interrupt structure allows a daisy chain wiring of multiple iC-TW11. Therefore a controller can capture multiple rotation axes simultaneously.
At a voltage supply of 3.3V (±10%) the hall encoder operates in the extended industrial operating temperature range from -40 to +125°C. The space requirement of the single-chip encoder iC is especially low due to the QFN16 package with 4x4mm.
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