Product Overview
The AS5048 is an easy-to-use, 14-bit high-resolution magnetic rotary encoder that measures the absolute position of a magnet's rotation over 360. It integrates Hall sensors, an analog-to-digital converter, and digital signal processing to provide absolute position information accessible via PWM, SPI (AS5048A), or IC (AS5048B) interfaces. The zero position is programmable, simplifying assembly and eliminating the need for mechanical alignment. Its robustness against misalignment, air gap variations, temperature fluctuations, and external magnetic fields, combined with a wide operating temperature range (-40C to 150C), makes it ideal for harsh industrial and medical environments. Multiple AS5048 ICs can be daisy-chained for serial data readout. It supports both 3.3V and 5V supply voltages.
Product Attributes
- Brand: ams
- Certifications: MIL 883 E method 3015 (ESD), IPC/JEDEC J-STD-020 (Moisture Sensitivity Level 3)
- Material: CMOS process
Technical Specifications
| Parameter | AS5048A/AS5048B | Unit | Notes |
| Resolution | 14 | Bit | 0.0219/LSB |
| Interface | SPI (AS5048A), IC (AS5048B), PWM | - | - |
| Programmable Zero Position | Yes | - | Via SPI or IC |
| Operating Temperature Range | -40 to 150 | C | - |
| Supply Voltage | 3.0 to 5.5 | V | VDD5V |
| Supply Voltage (Internal Regulator) | 3 to 3.6 | V | VDD3V |
| Package | TSSOP14 (5 x 6.4mm) | - | - |
| Magnetic Input Field | 30 - 70 | mT | Bz |
| Output Sampling Rate | 10.2 - 12.4 | kHz | fsample |
| System Propagation Delay | 90.7 - 110.2 | s | tprop |
| PWM Frequency | 0.907 - 1.102 | kHz | fPWM |
| Non-linearity (Optimum Placement) | 0.8 | deg | @25C |
| Non-linearity (Optimum + Temp) | 1 | deg | Over full temperature range |
| Non-linearity (Displaced + Temp) | 1.2 | deg | -40C to 150C, N35H magnet, 500m displacement |
| Startup Time | 10 | ms | tstartup |
| Storage Temperature | -55 to 150 | C | TSTRG |
| Package Body Temperature (Reflow Peak) | 260 | C | IPC/JEDEC J-STD-020 |
| Moisture Sensitivity Level | 3 | - | Max floor life 168h |
2410010401_AMS-AS5048A-HTSP-500_C2655181.pdf
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