Description
The CXA1498S/M is a bipolar IC designed as equalizer amplifier for tape redorder recording/playback. This IC is particularly well-suited for double cassette deck applications. An on-chip filter serves to greatly reduce the number of external parts.

Features
• Recording equalizer amplifier × 2
   (Monolithic filter eliminates the need for external resonance circuit)
• AGC (automatic gain control) × 2
• Playback equalizer amplifier × 2
   (Variable resistor eliminates the need for external feedback resistor)
• Electronic switch for playback head (Changes between A and B decks)
• Electronic switch for tape equalization (120µs/70µs) (Independently for A and B decks)
• Electronic switch for metal tapes
• Electronic switch for normal/high speed dubbing (Effective for both REC EQ and PB EQ)
• Recording mute function (Soft mute is possible through use of an external time constant circuit)
• DC controllable for fade IN/OUT (Controls recording mute function)
• Playback mixing output pin provided (For tune selection)
• Use of this IC simplifies the construction of double cassette dubbing system

Applications
  Recording/playback equalizer amplifier, playback mixing amplifier and AGC for analog stereo tape recorders