The Broadcom AEAT-8800-Q24 is an angular magnetic rotarysensor that provides accurate angular measurement over a full360 degrees of rotation.It is a sophisticated system that uses integrated Hall sensorelements with complex analog and digital signal processingwithin a single device.A simple two-pole magnet generates the necessary magneticfield by rotating it in perpendicular, placed in alignment to thecenter of the device.The Broadcom AEAT-8800-Q24 is a versatile solution capable ofsupporting a broad range of applications with its robustarchitecture to measure and deliver both absolute andincremental signals.The absolute angle measurement provides an instantindication of the magnet's angular position with a selectableand one-time programmable resolution of 10, 12, 14or 16 bits.When selected, its positioning data is then represented in itsdigital form to be assessed through a standard SSI 3 wirecommunication protocol. Where desired, users may alsochoose to receive its absolute angle position in PWM-encodedoutput signals.The incremental positions are indicated on ABI and UVWsignals with user configurable CPR 32, 64, 128, 256, 512, 1024,2048, and 4096 of ABI signals and pole pairs from 1 to 8 (2 to16 poles) for UVW commutation signals. An internal voltageregulator allows the AEAT-8800-Q24 to operate at either 3.3V or5V supplies.
Feature
- 5V or 3.3V operation
- Three-wire SSI interface for absolute output
- Selectable 10, 12, 14or 16 bits of absolute resolution
- Incremental ABI and UVW pins out
- PWM output modes
- User-programmable zero position, directionand index pulse width
- Selectable zero latency mode option to reduce latency to near 0
- Programmable hysteresis
- Easy alignment and calibration mode
- Compact QFN-24 leads (5 mm × 5 mm) package
- RoHS compliant
Applications
- Three-phase commutation for a brushless DC motor
- Resolver and potentiometer replacement
- Industrial automation and robotics
- Industrial sewing machine and textiles equipment
