LC78645E

PRODUCT INFORMATION Vol.102 Digital Servo DSP with On-Chip RF Amplifier Developed CD player servo processing and decoding integrated on a single chip LC78645E Overview The popularity of music has resulted in the widespread use of a wide range of audio media, such as cassette tape, CD, and MD. Recently, the consumer’s options have expanded to include products that use semiconductor memory as the storage medium. Still, the CD, with an annual worldwide market of 120 million units, remains the most popular format and is expected to retain its lead for the near future. Since the CD player represents a mature market, particular aspects are desired in the components used in these products. The main desired properties are (1) the ability to provide stable performance for easy development of end products (In particular, this means reducing both the time and the number of employees required for end product development.) and (2) a small total parts count to improve reliability, to reduce manufacturing and parts costs and to increase production efficiency. To respond to these needs, Sanyo has now developed the LC78645E super system-on-chip servo CD DSP that integrates an RF amplifier on the same chip. Until now, even though a digital servo CD DSP has been used, CD players have required a separate bipolar IC to provide the required RF amplifier. Thus the main signal processing for CD playback has, until now, required a two-chip structure consisting of this bipolar IC and the CD DSP that ...