Product Overview
The Broadcom AEAT-9922 is a versatile angular magnetic rotary sensor designed for precise 360-degree angle measurement. It integrates Hall sensor elements with advanced analog and digital signal processing to deliver both absolute and incremental signals. Suitable for on-axis and off-axis applications, it supports programmable resolutions from 10 to 18 bits for absolute position and up to 10,000 CPR for incremental signals. Communication is facilitated via SSI and SPI protocols, with an option for PWM output. Its robust architecture and compact QFN-24 package make it ideal for demanding industrial automation, robotics, and motor control applications.
Product Attributes
- Brand: Broadcom
- Certifications: RoHS compliant
Technical Specifications
| Parameter | Min. | Typ. | Max. | Units | Notes |
|---|---|---|---|---|---|
| Electrical Characteristics | |||||
| Storage Temperature | -40 | 125 | C | ||
| DC Supply Voltage (VDDA/VDD) | -0.3 | 6 | V | ||
| Input Voltage Range | -0.3 | 6 | V | ||
| Electrostatic Discharge (HBM) | -4.0 | +4.0 | kV | ||
| Operating Ambient Temperature | -40 | 125 | C | ||
| DC Supply Voltage (VDD) - 5V Operation | 4.5 | 5.0 | 5.5 | V | |
| DC Supply Voltage (VDD) - 3.3V Operation | 3.0 | 3.3 | 3.6 | V | |
| Incremental Output Frequency | 1.0 | MHz | Frequency = Velocity(rpm) CPR/60 | ||
| Load Capacitance | 15 | pF | |||
| Supply Current (Normal Operation) - 5V | 25 | mA | |||
| Supply Current (Normal Operation) - 3.3V | 24 | mA | |||
| Digital Outputs High Level Output Voltage (VOH) | VDD 0.5 | V | |||
| Digital Outputs Low Level Output Voltage (VOL) | GND + 0.4 | V | |||
| Power-Up Time | 10 | ms | Absolute Output, Incremental Output, PWM Output | ||
| Digital Inputs Input High Level (VIH) | 0.7 VDD | V | |||
| Digital Inputs Input Low Level (VIL) | 0.3 VDD | V | |||
| Encoding Characteristics | |||||
| Absolute Output Resolution | 10 | 18 | Bit | Programmable 10 to 18 bits | |
| Integral Non-Linearity (On-Axis, Nominal) | 0.1 | Degree | Best fit line, centered magnet. TA = 25C, Voltage = 5V, INL angle correction | ||
| Integral Non-Linearity (Off-Axis) | 0.15 | Degree | |||
| Integral Non-Linearity (On-Axis, Displacement) | 0.2 | Degree | Best fit line, over displacement of magnet. TA = 25C, Voltage = 5V | ||
| Integral Non-Linearity (Off-Axis, Displacement) | 0.3 | Degree | |||
| Integral Non-Linearity (On-Axis, Temp) | 0.5 | Degree | Best fit line, over displacement of magnet and temperature variation. TA = 40C to +125C, Voltage = 5V | ||
| Integral Non-Linearity (Off-Axis, Temp) | 0.7 | Degree | |||
| Code Monotony | 1 | LSB | 14-bits absolute (Static) | ||
| Output Sampling Rate | 10 | MHz | Based on SSI3 protocol | ||
| Latency | 80 | ns | |||
| Incremental Output (Channel ABI) Resolution | 1 | 10000 | CPR | Programmable | |
| Index Pulse Width | 90 | 360 | e | Programmable options: 90, 180, 270, or 360 e. | |
| Index State | 90 | 360 | e | Programmable options: 90, 180, 270, or 360 e. | |
| Relative Angular Accuracy | 10 | % | Reference to an output period at output A and B, at 512 CPR, 5V, and 3000 RPM | ||
| PWM Output Frequency | 122 | 976 | Hz | Adjustable based on PWM settings | |
| Minimum Pulse Width (PWM) | 1 | s | |||
| Maximum Pulse Width (PWM) | 16,384 | s | |||
| Encoder Timing Characteristics | |||||
| Incremental Output (ABI and UVW) System Reaction Time | 10 | ms | First ABI pulse detection upon power up. | ||
| Mechanical and Magnetic Specifications | |||||
| Magnet Diameter (Disc Magnet) | 4 | 6 | mm | Recommended magnet: Cylindrical magnet or ring magnet diametrically magnetized and 1-pole pair. | |
| Magnet Diameter (Ring Magnet ID/OD) | 15 | 25 | mm | ||
| Magnet Thickness (Disc Magnet) | 2 | 2.5 | mm | ||
| Magnet Thickness (Ring Magnet) | 6 | mm | |||
| Magnetic Input Field Magnitude (On-Axis, Disc Magnet) | 45 | 100 | mT | Required vertical/horizontal component of the magnetic field. | |
| Magnetic Input Field Magnitude (Off-Axis, Ring Magnet) | 30 | 150 | mT | ||
2509191054_Broadcom-AEAT-9922-Q24_C5116538.pdf
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