AM256L - Low voltage variant of the AM256 8 bit rotary magnetic sensor chip
(Has been replaced by the AM4096.)
The AM256L is a compact solution for angular position sensing.
Overview
Introduction
The IC senses the angular position of a permanent magnet placed above the chip.
The AM256L uses Hall sensor technology to detect the magnetic flux density distribution at the surface of the silicon. Hall sensors are placed in a circular array around the center of the IC and deliver a voltage representation of magnetic field distribution.
The sine and cosine voltage outputs from the sensor array vary with magnet position. The sine and cosine signals are then converted to absolute angle position with a fast eight bit flash interpolator.
The absolute angle position value from the interpolator is output through a parallel binary interface or a serial SSI interface. The relative changes of angle position are output through incremental A QUAD B encoder signals. The resolution of incremental output is selectable between 128 and 256 counts per turn with an external pin.
Sample kits: RMK2L
AM256L Rotary Magnetic Encoder IC on a PCB with all necessary components and a magnet, delivered in an antistatic box.
Outputs: Parallel, SSI, Incremental, Unbuffered Sine/Cosine
Features
- Contactless angular position encoding over 360°
- Ideal for harsh environments due to magnetic sensing
- Complete system-on-chip solution
- 8 bit absolute encoder
- Output options:
- Incremental
- Parallel
- Serial SSI
- Analogue sinusoidal
- Factory optimised linearity
- High rotational speed up to 30,000 rpm
- 3.3 V power supply
- Low power consumption. 7 mA typical.
- Extended operating temperature range (-40 °C to 125 °C)
- SMD package SSOP28
Documentation
| Doc. no. | Issue | Description | Type | Size |
| AM256LD01 | 3 | AM256L Data sheet | PDF File | 496 KB |
