AS5145H Rotary Sensor
12-bit rotary position sensor with digital angle (interface) and PWM output
Features
- Failure detection mode for magnet placement monitoring and loss of power supply
- Serial read-out of multiple interconnected AS5145 devices using Daisy Chain mode
- Detects movement of magnet in Z-axis (Red-Yellow-Green indicator)
- Contactless high resolution rotational position encoding over a full turn of 360 degrees
- Simple user-programmable zero position and settings
- Serial communication interface (SSI)
10-bit pulse width modulated (PWM) output
Quadrature A/B and Index output signal - Rational speeds up to 30,000 rpm
Benefits
- Highest reliability and durability
- Simple programming
- Multiple interfaces
- Ideal for motor applications
- Failure diagnostics
- Easy setup
- Great flexibility at a huge application area
Product parameters
Resolution [bit] | 12 |
---|---|
Interface | SSI |
Output | Digital angle (interface) / PWM |
Max. Speed [rpm] | |
Overvoltage Protection | |
Redundant | |
Supply Voltage [V] | 3.3 or 5.0 |
Temperature Range [°C] | -40 to +150 |
Package | SSOP-16 |
Automotive Qualified | Yes |
Longevity Program |
General description
The AS5145H is a contactless magnetic rotary position sensor for accurate angular measurement over a full turn of 360° and over an extended ambient temperature range of -40°C to 150°C. The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 0.0879° = 4096 positions per revolution via a serial bit stream and as a PWM signal.
With two decades of magnetic sensor system know-how, we have broad experience in selecting the most suitable magnets. ams experts recommend the following magnet suppliers.

This product suits for the following applications:
- Transmission gearbox position sensor
- Headlight position control
- Valve position sensing

Tools
Title | Category | Headline | Buy |
---|---|---|---|
AS5145DemoKit | Application Board | Demo Kit for AS5145 | |
SD4Y-PP | Accessories | Production Programmer SD4Y |
Technical documents
Type | Description | Language | ||
---|---|---|---|---|
Datasheet | Datasheet for AS5145 | English | ||
Application Note | PPTRIM programming | English | ||
Application Note | AN5000 Magnet Selection Guide v1-04 | English | ||
Application Note | Tape & Reel Packing Information | English | ||
User Guide | Programming tool | English |
Environmental documents
Type | Description | Language | ||
---|---|---|---|---|
Material Declaration Form | MDF_177710073_AS5145H-HSST | English | ||
Material Declaration Form | MDF_177710073_AS5145H-HSSM | English | ||
Material Declaration Form | MDF_177710073_AS5145H | English | ||
RoHS Certificate | RoHS Certificate_AS5145H_AS5145A_AS5145B | English |
Notifications
Type | Description | Language | ||
---|---|---|---|---|
EoL Notification | AS5xxx, AS6204, AS8223 EoL Notification (issued August-10-2021) | English | ||
Product Change Notification | PCN38-2018 (AS50xx, AS51xx, AS52xx, AS54xx, AS8xxx) | English |
Other information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | AS5145 Block Diagram | English | ||
Image | ASXXXX On-Axis SSOP16 Magnetic Field Lines |