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参数资料
| 型号： | AM512BVD |
| 厂商： | RENISHAW PLC |
| 元件分类： | 磁阻传感器 |
| 英文描述： | MAGNETIC FIELD SENSOR-HALL EFFECT, 1-4 V, SQUARE, SURFACE MOUNT |
| 封装： | ROHS COMPLIANT, LQFP-44 |
| 文件页数： | 1/22页 |
| 文件大小： | 608K |
| 代理商： | AM512BVD |
Data sheet
AM512BD01_04
Issue 4, 14
th January 2009
2009 RLS d.o.o.
A
associate company
Features
Contactless angular position encoding over 360°
Ideal for harsh environments due to magnetic
sensing
Complete system-on-chip solution
9 bit absolute encoder
Output options:
Incremental
Parallel
Serial SSI
Analogue linear
Factory optimized linearity
High rotational speed up to 30,000 rpm
5 V power supply
Low power consumption. 20 mA typical.
Extended operating temperature range
(-40 °C to +125 °C)
SMD package LQFP44
RoHS compliant (lead free)
Applications
Non-contact position or velocity
measurements:
Motor motion control
Flow measurement
Robotics
Camera positioning
Front panel switches
Workshop equipment
Mobility aids
Potentiometer replacement
General description
The AM512B is a compact solution for angular
position sensing. The IC senses the angular
position of a permanent magnet placed above
the chip. The permanent magnet must be
diametrically polarized and of cylindrical shape.
The AM512B 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
the 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 nine bit flash
interpolator.
The absolute angle position value from the
interpolator is output either through a parallel
binary interface, a serial SSI interface or a linear
voltage output. The relative changes of the
angle position are also output as incremental
A QUAD B encoder signals. The resolution of
incremental output is 512 counts per turn.
Fig. 1: AM512B with magnet
AM512B – Angular magnetic encoder IC
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