feedback
评价本网页


需要帮助?


LC898212XA: AF(Auto Focus) Control LSI

Datasheet: AF(Auto Focus) Control LSI
Rev. 1 (52.0kB)
»查看材料成分
»No Product Change Notifications exist
Product Overview
产品说明
The AF control device, LC898212XA-MH, provides an ideal way to implement the reduced power consumption and the improved autofocus precision and speed (reduced convergence time) required in high-pixel-count camera modules for use in smartphones.The LC898212XA-MH integrates on a single chip an equalizer circuit employing digital calculation, and it can be combined with position sensors to build a closed-loop actuator control system. Since closed-loop control provides better ability to maintain the control object than conventional open-loop systems and is not affected by position differences, the LC898212XA-MH is ideal for use in AF systems used in a wide variety of cameras. A closed-loop system uses position sensors for position control, and power consumption is lower than with conventional open-loop control, which uses current values for position control.In addition, a new PWM drive system employed suppresses noise that could affect image quality while achieving reduced power consumption, making this IC ideal for use in mobile devices such as smartphones. The filter coefficients of the equalizer circuit can be adjusted to any values desired by making register settings via I2C communication. This makes it possible to build a control circuit optimized to the various types of actuators and thereby achieve faster autofocus (reduced convergence time) performance.The integrated ADC provides up to 10-bit precision for highly accurate AF position control. Also integrated on-chip are a constant current supply DAC for drive and an op-amp with adjustable gain for use with the position sensors indispensable for building a closed-loop control system.
特性   优势
     
  • Built-in equalizer circuit using digital operation
 
  • LC898212XA-MH provides an ideal way to implement the reduced power consumption and the improved autofocus precision and speed (reduced convergence time) required in high-pixel-count camera modules for use in smartphones.
  • I2C Interface
 
  • The LC898212XA-MH integrates on a single chip an equalizer circuit employing digital calculation, and it can be combined with position sensors to build a closed-loop actuator control system. Since closed-loop control provides better ability to maintain the control object than conventional open-loop systems and is not affected by position differences, the LC898212XA-MH is ideal for use in AF systems used in a wide variety of cameras. A closed-loop system uses position sensors for position control, and power consumption is lower than with conventional open-loop control, which uses current values for position control.
  • Built-in A/D converter
 
  • In addition, a new PWM drive system employed suppresses noise that could affect image quality while achieving reduced power consumption, making this IC ideal for use in mobile devices such as smartphones. The filter coefficients of the equalizer circuit can be adjusted to any values desired by making register settings via I2C communication. This makes it possible to build a control circuit optimized to the various types of actuators and thereby achieve faster autofocus (reduced convergence time) performance.
  • Built-in D/A converter
 
  • The integrated ADC provides up to 10-bit precision for highly accurate AF position control. Also integrated on-chip are a constant current supply DAC for drive and an op-amp with adjustable gain for use with the position sensors indispensable for building a closed-loop control system.
  • Built-in OP Amp
   
  • Built-in OSC
   
  • Built-in PWM pulse generator circuit
   
  • 1-chip motor driver
   
  • Supply voltage
    -Logic unit:Internal core type 1.2V(1.08V to 1.32V),AVDD(2.6V to 3.6V)
    -Driver unit:VM(2.6V to 3.6V)
   
应用   终端产品
  • AF control
 
  • Smart Phone
  • Tablet
技术文档及设计资源
数据表 (1)  
Datasheet: AF(Auto Focus) Control LSI
Rev. 1 (52.0kB)
»查看材料成分
»No Product Change Notifications exist
Product Overview
外形
Datasheet: AF(Auto Focus) Control LSI
Rev. 1 (52.0kB)
»查看材料成分
»No Product Change Notifications exist
Product Overview
之前浏览的产品
清除列表

Associated Products
  Do you also need MOSFETs?
Do you also need IGBTs?