HA16671MP

It is designed as one kind of voice coil motor servo controller for hard disk head positioning.Three chips can make up a control system for the HA13447 VCM driver:the HA16671MP for position signal generation,and the HA16671MP and HA16672MP servo controllers.It is composed of a speed detection circuit,current integrating circuit,phase compensator,op amp filter,etc.The product  on the otherhand,contains an 8-bit DAC and can output target speed,target acceleration and external force compensation values based on data from a microprocessor.

Features of the HA16671MP are:(1)two power supply design(+5V,+12V);(2)compact surface-mount package(SMP);(3)feed forward compensation for low-error speed control;(4)compensation based on acceleration and external force data can be added to the speed control loop;(5)digital signals can be directly linked to a microprocessor;(6)external op amps not needed.And the functions of the HA16671MP are:(1)position signal differentation;(2)current intergration;(3)1/4 track detection;(4)fine track detection;(5)8-bit DAC;(6)sample and hold circuit;(7)op amp for filter design.

The absolute maximum ratings of the HA16671MP can be summarized as:(1)power supply voltage:15.0 or 7.0 V;(2)input voltage:7.0 or Vcca-1.5 V;(3)differential input voltage:Vcca-1.5 V;(4)input current:1.5 mA;(5)operating temperature:0 to 70;(6)storage temperature:-55 to +125.If you want to know more information about this part,please download the datasheet in www.seekic.com and www.chinaicmart.com .