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