High-performance Clock Generator Series Clock Generator with Built-in VCXO for A/V Equipments No.09005EAT05 BU2365FV Description The ROHM Clock Generator is an IC allowing for the generation of multiple clocks by a single chip through the connection of a single crystal oscillator. The BU2365FV incorporates the ROHMs unique PLL technology to provide the generation of multiple high C/N clocks necessary for the DVD recorder system. This Clock Generator has the built-in high-precision VCXO function and allows for high-precision synchronization with DVD Video clocks. It also has a built-in buffer having high driving force and allows the supply of multiple 27MHz Video clocks for the system, thus providing the reduced number of the system components. Features 1) The ROHMs unique PLL technology allows for the generation of high C/N clocks. 2) Built-in high precision VCXO, which is essential for the DVD recorder system 3) Built-in buffer having high driving force (Load capacity/output CL=50pF, 27MHz drive, 1input / 2outputs) 4) Built-in half pulse clock protection HPC 5) Built-in power down function, Icc=0 uA(typ.) 6) SSOP-B24 package 7) Single power supply of 3.3 V Application DVD recorder Absolute Maximum RatingsTa=25 Parameter Symbol Limits Unit Supply voltage VDD -0.3~7.0 V Input voltage VIN -0.3~VDD+0.3 V Storage temperature range Tstg -30~125 Power dissipation PD 820 mW *1 Operation is not guaranteed. *2 In the case of exceeding Ta = 25, 8.2mW should be reduced per 1. *3 The radiation-resistance design is not carried out. *4 Power dissipation is measured when the IC is mounted to the printed circuit board. Recommended Operating Range Parameter Symbol Limit Unit Supply voltage VDD 3.0~3.6 V Input H voltage VINH 0.8VDD~VDD V Input L voltage VINL 0.0~0.2VDD V Operating temperature Topr -10~70 22Pin / 19Pin CL CLK768FS/384FS 32(MAX) pF 13Pin , 14Pin CL BUFOUT 50(MAX) pF 18Pin / 24Pin CL CLK512FS/54M 15(MAX) pF www.rohm.com 2009.04- Rev.A 1/16 2009 ROHM Co., Ltd. All rights reserved. Technical Note BU2365FV Electrical characteristics VDD=3.3V, Ta=25, Crystal frequency (XTAL IN)=27.000000MHz, at no load, unless otherwise specified. Limit Parameter Symbol Unit Condition Min. Typ. Max. Consumption circuit current IDD 55 71.5 mA At no output loads Output H voltage VOH 2.4 V When current load = -4.0mA Output L voltage VOL 0.4 V When current load =4.0mA Specified by a current value running Pull-Up resistance value Pull-Up R 168 260 578 k when a voltage of 0V is applied to a FSEL,OE measuring pin. (R=DD/I) Specified by a current value running Pull-Down resistance value Pull-downR 31 48 106 k when a VDD is applied to a TEST measuring pin. (R=VDD/I) Output frequency CLK768 CLK768FS : FSEL=L 33.868800 MHzXTAL IN(3136/625)/4 FS L CLK768 CLK768FS : FSEL=H 36.864000 MHzXTAL IN(2048/375)/4 FS H CLK384 CLK384FS 18.432000 MHzXTAL IN(2048/375)/8 FS CLK512 CLK512FS 24.576000 MHzXTAL IN(2048/375)/6 FS CLK54M CLK54M 54.000000 MHzXTAL IN(32/4)/4 Output waveform Duty Duty1 45 50 55 Measured at a voltage of 1/2 of VDD Period of time required for the output to Rise time Tr 2.5 nsec reach 80% from 20% of VDD Period of time required for the output to Fall time Tf 2.5 nsec reach 20% from 80% of VDD Jitter 1 Period-Jitter 1 P-J1 50 psec P-J 2 Period-Jitter MIN-MAX 300 psec MIN-MAX 3 Output Lock-Time Tlock 1 msec 4 Frequency stability F/F0 15 15 ppmT=-10~70,VDD=3.3V0.15V 5 Frequency sensitivity F/Fc 30 45 60 ppm 5 Frequency sensitivity linearity Linearity 10 10 ppm Phase difference between Buffer skew Tskew BUF 500 500 psec BUF OUT1 and BUF OUT26 Phase difference between BUF IN Buffer delay Td BUF 4 8 nsec and BUF OUT Note) The output frequency is determined by the arithmetic (frequency division) expression of a frequency input to XTAL IN. www.rohm.com 2009.04- Rev.A 2/16 2009 ROHM Co., Ltd. All rights reserved.