Description

The CXA2557R is an RF signal processing IC for CD players, CD-ROM and CD-RW (playback).

Features

• Wide-band RF AC amplifier

• Supports CD-RW playback (RF DC, RF AC, FE, TE and AL amplifiers)

• 5-mode RF AC equalizer (active filter type)

• RF AC equalizer boost amount and cut-off frequency adjustable

• Voltage gain adjustable for RF DC, RF AC, FE, TE and AL amplifier

• RF DC amplifier offset voltage switchable

• FE and TE amplifier bias voltage adjustable

• Tracking error amplifier cut-off frequency adjustable

• Alignment amplifier

• Center error amplifier

• AGC (Automatic Gain Control) function

• APC (Automatic Power Control) function

• VC/VC IN separation

• Supports laser coupler/3 spots

Functions

• RF DC summing amplifier

• RF AC summing amplifier

• RF AC equalizer

• Focus error (FE) amplifier

• Tracking error (TE) amplifier

• Alignment (AL) amplifier

• Center error (CE) amplifier

• Mirror circuit

• AGC circuit

• VREF output

Applications

• CD players

• CD-ROM drives