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LC898217XH Datasheet Auto Focus (af) Controller & Driver

Manufacturer: onsemi

Overview: 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 acplishes 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. .onsemi. 2.

General Description

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 element) VGA input (from Hall element) VGA input (from Hall element) Driver output (to Actuator) Driver output (to Actuator)  Power supply pin VDD VSS P P Power supply GND  Test pin PORT B Analog test signal input/output Convergence detection monitor output VSYNC input * Process when pins are not used PIN TYPE “O” –

Key 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 - Output 2 channel (Hall offset, Constant current bias)  Built-in VGA - Hall Amp - 1 channel  Built-in EEPROM - 128 byte (16 byte/page)  Built-in OSC.
  • Built-in Constant Current Driver - 110 mA - 1 ch.

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LC898217XH Distributor