LC898217XH Datasheet (ON Semiconductor) - Auto Focus (AF) Controller & Driver

LC898217XH, Auto Focus (AF) Controller & Driver

LC898217XH I INPUT O OUTPUT B BIDIRECTION P  2-wire serial interface SCL I SDA B  Hall interface BIASO OPINP OPINM O I I  Driver interface OUT1 OUT2 O O TYPE Power supply, GND NC NOT CONNECT 2-wire serial interface clock pin 2-wire serial interface data pin D/A output (to Hall eleme

LC898217XH Auto Focus (AF) Controller & Driver 1.

Overview LC898217XH is the AF control LSI.

It consists of 1 system of feedback circuit for AF control.

Built-in equalizer circuit using digital operation.

Built-in A/D converter, D/A converter, Constant Current Driver.

LC898217XH contains an internal EEPROM.

It easily accomplishes Hall calibration and power-on sequence.

Also LC898217XH has fast settling function for quickly moving focus lens.

This is suitable for small & thinner camera module.

LC898217XH Features

*  Built-in equalizer circuit using digital operation - AF control equalize circuit - Any coefficient can be specified by 2-wire serial I/F (TWIF)  2-wire serial interface (The communication protocol is compatible with I2C.)  Built-in A/D converter - Input 1 channel  Built-in D/A converter - Outpu