Description
   The U4488B is an integrated bipolar circuit for full multistandard sound IF signal processing in TV/VTR and Multimedia applications. It supplies AM signals as well as FM/NICAM sound IF signals and thus allows the design of a universal sound IF module for various applications. The U4488B has the same performance like the U4468B, with the additional feature of a second symmetrical IF input.

FEATUREs
● 5-V supply voltage; low power consumption
● Gain-controlled 3-stage wideband IF amplifier
● Active carrier generation by FPLL principle
   (frequency-phase-locked-loop) for true quadrature
   demodulation
● Complete alignment-free AM demodulator
● Switchable amplitude detector for gain control, which
   operates as a peak detector for FM sound and as a
   mean level detector for AM sound
● Two symmetrical IF inputs