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AMS AS5048B HTSP 500 Magnetic Rotary Encoder 14 bit Angular Position Sensor with SPI and IC Interface

Categories Angle, Linear Position Measuring
Current - Supply: 15mA
Interface: I2C
Voltage - Supply: 3V~3.6V;4.5V~5.5V
Description: I2C TSSOP-14 Angle, Linear Position Measuring RoHS
Mfr. Part #: AS5048B-HTSP-500
Model Number: AS5048B-HTSP-500
Package: TSSOP-14
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AMS AS5048B HTSP 500 Magnetic Rotary Encoder 14 bit Angular Position Sensor with SPI and IC Interface

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 angle. 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, coupled 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. The device supports both 3.3V and 5V supply voltages.

Product Attributes

  • Brand: ams
  • Product Type: Magnetic Rotary Encoder (14-Bit Angular Position Sensor)
  • Interfaces: SPI (AS5048A), IC (AS5048B), PWM
  • Resolution: 14-bit
  • Operating Temperature: -40C to 150C
  • Supply Voltage: 3.3V / 5V
  • Package: 14-pin TSSOP (5 x 6.4mm)

Technical Specifications

ParameterAS5048A/AS5048BUnitNotes
Supply Voltage (VDD5V)4.5 - 5.5V5V Operation via LDO
Supply Voltage (VDD3V)3 - 3.6VLDO output voltage
Core Supply Voltage (VDDCORE)3 - 3.6V
Ambient Temperature (TAMB)-40 - 150COnly for 5V operation. T_amb_max for 3V is 125C
Supply Current (ISUP)15mA
High Level Input Voltage (VIH)0.7 * VDDCOREVCMOS Digital Input with Schmitt Trigger: CSn, CLK, MOSI and SCL, A1, A2
Low Level Input Voltage (VIL)0.3 * VDDCOREVCMOS Digital Input with Schmitt Trigger: CSn, CLK, MOSI and SCL, A1, A2
Input Leakage Current (ILEAK)1ACMOS Digital Input with Schmitt Trigger
High Level Output Voltage (VOH)VDDCORE - 0.5VCMOS Output: PWM, MISO, SDA
Low Level Output Voltage (VOL)GND+0.4VCMOS Output: PWM, MISO, SDA
Capacitive Load (CL)50pFCMOS Output
Output Current (IOUT)4mACMOS Output
Magnetic Input Field (Bz)30 - 70mT
Output Sampling Rate (fsample)10.2 - 12.4kHz
Output Resolution14Bit
Sensor Output Noise2.73LSB@14bit, rms value0.06 deg
System Propagation Delay (tprop)90.7 - 110.2s
PWM Frequency (fPWM)0.907 - 1.102kHz
Non-linearity (INLOPT @25C)0.8degOptimum placement of the magnet
Non-linearity (INL OPT+TEMP)1degOptimum placement of the magnet over the full temperature range
Non-linearity (INL DIS+TEMP)1.2deg@ displacement of magnet and temperature (-40C to 150C), Assuming N35H magnet (D=8mm, H=3mm), 500m displacement in x and y, z-distance @ 2000m
Startup Time (tstartup)10ms

2410010401_AMS-AS5048B-HTSP-500_C2655184.pdf

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