View la9239t datasheet:

Ordering number : ENN7131 Monolithic Linear IC LA9239T 48? CD-ROM Digital Servo RF IC Overview Features The LA9239T is a CD-ROM digital servo RF IC that The LA9239T is an IC that features on-chip functions for supports high-speed CD-ROM drive replay of up to 48? . It improved playability and an RF equalizer, resulting in also supports RW disks by featuring an on-chip servo superior performance and a reduced need for external VCA and gain switch. components. Functions Package Dimensions • RF amplifier (with AGC) unit: mm • RF gain amplifier (supporting CD-RW disk replay) 3253-TSSOP36 • RF equalizer (7 modes) [LA9239T] • RF hold function 9.95 • PH/BH detection 36 19 • 3T extraction circuit • FE amplifier (built-in balance adjustment VCA) • TE amplifier (built-in balance