AK8135S

AK8135S Preliminary Low Power Multiclock Generator with VCFS AK8135S Features 30.000MHz Crystal Input One 30.000MHz-Reference Output Selectable Clock out Frequencies: - 25.000 MHz at CLK1 - 30.000 MHz at CLK2 - 33.000 MHz at CLK3-5 - 27.000 MHz at REF1-3 Built-in two VCFS - VCFS1 Pull Range: ±120ppm (typ.) - VCFS2 Pull Range: ±135ppm (typ.) Low Jitter Performance - Cycle to Cycle Jitter: 33.3 psec (Max.) at CLK1 50 psec (Typ.) at CLK2-5 - Period Jitter: 25 psec (Typ.) at REF1-3 - Long term jitter： 66.7 psec (Typ.) at REF1-3 Low Current Consumption: (29) mA (Typ.) at 3.3V Supply Voltage: 3.0 – 3.6V Operating Temperature Range: -20 to +85℃ Package: 48-pin LQFP (Lead free) Description AK8135S is a member of AKM’s low power multi clock generator family designed for Recorders, DTVs or STBs, requiring a range of system clocks with high performance. AK8135S generates different frequency clocks from a 30.000MHz crystal oscillator and provides them to eight outputs. Th e on-chip VCFS (Voltage Controlled Frequency Synthesizer) accepts a voltage control input to allow the output clocks to vary by ±120/135 ppm for synchronizing to the external clock system. Both circuitries of VCFS and PLL in AK8135S are derived from AKM’s long-term-experienced clock device technology, and enable clock output to perform low jitter and to operate with very low current consumption. AK8135S is available in a 48-pin LQFP package. Applications HDD, DVD, BD Recorder DTV Set-Top-Boxes draft-E-00 -1- ...