BU2385KN Multimedia ICs Clock generator for digital still camera BU2385KN BU2385KN is a clock generator IC that can generate multiple frequencies (clocks) from one oscillator. Excellent jitter characteristic is achieved through the built-in high-performance 3-channel PLL. High-quality sound and image equivalent to the oscillating module are the result of this feature. Clocks can be easily changed for other applications. The internal dividing control allows the frequency to be switched outside. zExternal dimensions (Unit : mm) 1.1+ − 0.15 0.6 +0.15 −0.3 3− 4.2+ −0.1 4.0+ −0.1 11 10 16 6 20 1 0. 20 −+0 . 1 + −0 0.2 .4 4.2+ −0.1 4.0+ −0.1 5 25 . +−0 35 0. 0. zFeatures 1) Multiple frequency clock signals can be generated by the built-in 3-channel PLL through connecting crystal oscillator. 2) QFN20V package 3) 3.3V single power supply 4) For crystal 14.318182MHz • 28.636363MHz 5) No need additional components. (BU2385KN have PLL loop filter in side). 15 5 0.20+ −0.05 0.05 M 0.2+ −0.05 0.5 12 12 0.01+0.03 −0.007 0.6+ −0.1 0.8+ −0.15 zApplications Digital still camera 0.05 QFN20V zAbsolute maximum ratings (Ta=25°C) Symbol Limits Unit Applied voltage Parameter VDD −0.5 to +7.0 V Input voltage VIN −0.3 to VDD+0.3 V Storage temperature range Tstg −30 to +125 C Pd 530 mW Power dissipation ∗ An operation is not guaranteed. ∗ In case it is used at Ta=25 C or more, 5.3mW is reduced at every 1 C. ∗ Radiation resistance design is not used. ∗ Power dissipation is measured when BU2385KN is placed in the board. zRecommended operating conditions (Ta=25°C) Parameter Symbol Min. Typ. Max. Unit Supply voltage VDD 3.0 − 3.6 V Input H voltage range VIH 0.8VDD − VDD V V Input L voltage range Operation temperature range Output maximum load VIL 0.0 − 0.2VDD Topr −5 − +70 C CL − − 15 pF 1/4 BU2385KN Multimedia ICs TEST2 REF_CLK VDD2 VSS2 CLK2OUT zBlock diagram 20 19 18 17 16 AVDD 1 15 VDD1 AVDD 2 14 VDD1 AVSS 3 XIN 4 12 CKL2ON XOUT 5 11 CLK1_OUT Back View 6 7 8 9 10 TEST1 XTAL_SEL FS3 FS2 FS1 13 VSS1 zExplanation for terminal function PIN No. PIN NAME Function 1 AVDD Analog VDD 2 AVDD Analog VDD 3 AVSS Analog GND 4 XIN Standard crystal input 5 XOUT Standard crystal output 6 TEST 1 Input for test mode (normally open) 7 XTAL_SEL Crystal select H : 28.636363MHz 8 FS3 CLK1,2 output select with pull up 9 FS2 CLK1,2 output select with pull up 10 FS1 REFCLK output select with pull up 11 CLK1OUT 71.877274M / 90.314686M / 96.016044M / 114.54546M clock output 12 CLK2ON CLK2 output control H : enable L : disable 13 VSS 1 GND for CLK 1, 2 clock output and Logic circuit 14 VDD 1 VDD for CLK 1, 2,clock output and Logic circuit 15 VDD 1 VDD for CLK 1, 2,clock output and Logic circuit 16 CLK2OUT 96.016044M / 48.008022M clock output 17 VSS 2 REF_CLK GND 18 VDD 2 REF_CLK VDD 19 REF_CLK 14.318182M / 17.734450M clock output 20 TEST2 Input for test mode (normally open) with pull−down with pull up L : 14.318182MHz with pull up with pull−down 2/4 BU2385KN Multimedia ICs zPIN Input / Output equivalent circuit PIN No. Equival circuit Input PIN 7, 8, 9, 10, 12 with pull−up (6 : TEST1, 20 : TEST2 with pull down) To inside IC Output PIN 11, 16, 19 From inside IC Crystal PIN 4, 5 XTALIN XTALOUT To inside IC 3/4 BU2385KN Multimedia ICs zElectrical characteristics (Unless otherwise noted, Ta=25°C, VCC=3.3V) While crystal shows 28.636363MHz, XTAL_SEL=H, in case of 14.31818MHz, TXAL_SEL=L Parameter Symbol IDD Min. - Typ. 40 Max. 50 CLK1 FS2:H FS3:H Fclk1-1 − 96.016044 − FS2:H FS3:L Fclk1-2 − 71.877274 − FS2:L FS3:L Fclk1-3 − − MHz Fclk1-4 − − Xtal * (224/14)/2 FS2:L FS3:H 114.54546 90.314686 Fclk2-1 − 96.016044 − Xtal * (164/13)/2 CLK2 FS2:L FS3:L MHz MHz Fclk2-2 − − MHz Fref1-1 − − Xtal * (228/17)/4 REFCLK FS1:H 48.008022 14.318182 MHz FS1:L Fref1-2 − − MHz Crystal direct output Xtal * (706/57)/10 Duty1 at under 100MHz Duty1 45 17.734450 50 55 % Measured at 1/2VDD Duty2 at upper 100MHz Duty2 − 50 − % Rise time Tr − 2.5 − nsec Measured at 1/2VDD Time between 0.2VDD and 0.8VDD Fall time Tf − 2.5 − nsec Time between 0.2VDD and 0.8VDD P-J1σ − 30 − psec ∗1 P-J MINMAX − 180 − psec ∗2 − − 1 msec ∗3 Power supply current Unit mA Conditions No load output frequency FS2,3:HL LH HH Period Jitter 1σ Period Jitter MIN-MAX Output Lock time Tlock Xtal * (228/17)/2 Xtal * (251/25)/2 Xtal * (228/17)/2 Note) When input frequency is 14.31818MHz, output frequency is above rated value. ∗1 Period Jitter 1σ : This value is the standard deviation of an output period when using Time Interval Analyzer with 10,000 sampling. ∗2 Period Jitter MIN-MAX : This value is the max range of an output period when using Time Interval Analyzer with 10,000 sampling. ∗3 Output Lock time : Time between voltage supply leads to 3.0V and output clock gets stable. zApplication circuit 14.318182MHz 17.734450MHz CLK2OUT VSS2 VDD2 REF_CLK TEST2 48.008022MHz 96.016044MHz AVDD VDD1 AVDD VDD1 BU2385KN QFN−20 AVSS VSS1 FS1 FS2 CLK1_OUT FS3 XOUT XTAL_SEL CLK2ON TEST1 TEST1 XIN 114.54546MHz 96.016044MHz 71.877274MHz 90.016044MHz Note) BU2385KN is placed on the board normally. A decoupling capacitor (0.1µF) needs to be placed between Pin1,2 and Pin3, Pin13 and Pin14,15, Pin17 and Pin18. The decoupling capacitor is as close to the above pins as possible. 4/4 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.0