AS5045ASSU ams Integrated Circuit (Small Outline Packages) In Stock
ams AS5045ASSU is a contactless 12-bit magnetic rotary position encoder in an SSOP-16 package, providing absolute angular position over 360 degrees via SSI and SPI interfaces with a 4096-step resolution. Available worldwide with fast shipping.
- Manufacturer
- ams
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- AS5045ASSU Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12-bit resolution providing 4096 steps per revolution for precise absolute angular position sensing
- Contactless magnetic sensing eliminates mechanical wear for long-lifetime rotation measurement
- SSI and SPI-compatible serial interface for easy microcontroller integration
- 360-degree absolute position output with no need for reference point initialization
- Compact SSOP-16 package for space-efficient PCB integration in motor and encoder designs
- Supply voltage range of 3.3 V to 5 V for broad compatibility with logic-level systems
Applications
The AS5045ASSU is designed for contactless angle measurement in servo motor feedback systems, robotic joint position sensing, and industrial encoder applications requiring 12-bit resolution over a full 360-degree range. Its SPI-compatible output allows direct interfacing with microcontrollers and FPGAs in motion control, knob and dial position sensing, and gimbal stabilization systems. The contactless magnetic design makes it ideal for environments with vibration, dust, or moisture where optical encoders would degrade.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What resolution and angular range does the AS5045ASSU magnetic encoder provide?
The AS5045ASSU delivers 12-bit resolution, corresponding to 4096 discrete steps per revolution, over a full 360-degree absolute rotation range. This makes it suitable for precise angular position feedback in servo drives, robotic actuators, and industrial motion control systems requiring sub-degree position accuracy.
Which communication interface does the AS5045ASSU use to output position data to a microcontroller?
The AS5045ASSU uses an SSI (Synchronous Serial Interface) compatible with SPI protocol to transmit 12-bit absolute position data to a host microcontroller. This serial interface requires only a few signal lines — clock, data, and chip select — operating at supply voltages of 3.3 V or 5 V, simplifying integration into embedded motor control designs.
How does the AS5045ASSU compare to incremental encoders for motor feedback in closed-loop control?
Unlike incremental encoders that require homing at startup to find a reference position, the AS5045ASSU provides an absolute 12-bit position value immediately on power-up across the full 360-degree range. This eliminates homing routines, reducing system startup time and enabling robust operation after power loss in servo motor controllers, medical device actuators, and industrial automation equipment.
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