Broadcom AEAT-9966 Dual Chip Magnetic Encoder ICs
Broadcom AEAT-9966 Dual Chip Magnetic Encoder ICs provide dual/redundant angular magnetic rotary sensing for accurate 360° position measurement. The device integrates two independent magnetic encoder chips into a single package. The AEAT-9966 implements Hall sensor elements with analog and digital signal processing to detect the rotational angle of a two-pole magnet.
The Broadcom AEAT-9966 Dual Chip Magnetic Encoder ICs support both absolute and incremental position outputs for motor-control, automation, and feedback applications. Absolute angle data is available with selectable and reprogrammable resolution from 10-bits to 18-bits via SSI, SPI, or PWM outputs. In contrast, incremental position data is available through ABI and UVW signals with user-configurable resolution and commutation settings.
The AEAT-9966 supports on-axis and off-axis magnetic configurations, enabling designers to adapt the device to end-of-shaft, side-of-shaft, axial, and radial sensing arrangements. The encoder IC is ideal for brushless DC motors, stepper motors, resolver and potentiometer replacement, industrial automation, robotics, industrial sewing and textile equipment, and LiDAR applications.
Features
- Dual magnetic encoder chips in one package for redundancy support
- 360° angular magnetic rotary sensing with integrated Hall sensor elements
- Programmable absolute resolution range of 10-bits to 18-bits
- Programmable incremental ABI resolution range of 1CPR to 20000CPR
- Absolute output support through 2-wire SSI, 3-wire SSI, 4-wire SPI, and PWM
- UVW commutation angle output range of 1pp to 32pp
- Dedicated output pins for ABI, UVW, and serial interfaces
- Dedicated zero reset and error pin
- EEPROM architecture for multiple-time user programming
- Automatic integral non-linearity angle correction for high accuracy
- Designed for conformance to ISO26262 ASIL-D and SIL3 with secondary chip redundancy
Applications
- Brushless DC motors and stepper motors
- Resolver and potentiometer replacement
- Industrial automation and robotics
- Industrial sewing machines and textile equipment
- LiDAR systems
Specifications
- Operating voltage support of 5V and 3.3V
- Operating temperature range of -40°C to +125°C
- Magnetic sensor configuration support
- On-axis end-of-shaft mode
- Off-axis side-of-shaft axial and radial modes
- Sleep mode current consumption of 1mA
- Optional 56-bit memory lock function
- Package
- Compact QFN-32 leads package
- 5mm x 5mm body size
Dev Tools
HEDS-9966PRGEVB: AEAT-9966 Programming Kit & Evaluation Set
HEDS-9966EVB: AEAT-9966 Evaluation Board
Block Diagram
