ASAHI KASEI EMD CORPORATION Two Outputs Clock Generator AK8146B Features Description Pin Selectable External Input - 74.17582MHz - 74.25MHz - 60MHz Clock out Frequencies: - 12.000MHz - 13.5MHz Low Jitter Performance - Period Jitter 125 psec (max) at CLK1 205 psec (max) at CLK2 The AK8146B is a low power multi clock generator which generates different frequency clocks from a external clock input. It provides two outputs of 12MHz and 13.5MHz. PLL in AK8146B are derived from AKEMD’s long-term-experienced clock device technology, and enable clock output to perform low jitter and to operate with very low current consumption. The AK8146B is available in a 8-pin USON package. Applications Low Current Consumption: 5.0mA (Typ.) at 3.0V Supply Voltage: 2.7 – 3.3V Operating Temperature Range: -20 to +85℃ Package: 8-pin USON (Lead free) 2.2mm x 2.2mm Digital Video Camera Block Diagram VDD PLL1 CLKIN SEL0 1/16 CLK1 1/18 CLK2 SEL1 GND AK8146B Multi Clock Generator MS0994-E-00 Oct-2008 -1- The brand name of AKEMD’s IC’s AK8146BB Pin Descriptions SEL0 1 8 CLKIN VSS 2 7 VDD VDD 3 6 SEL1 CLK1 4 5 CLK2 Package: 8-Pin USON(Top View) Pin No. Pin Name Pin Type 1 SEL0 IN 2 GND PWR Ground 3 VDD PWR Power 4 CLK1 OUT 12.0 MHz clock output 5 CLK2 OUT 13.5 MHz clock output 6 SEL1 IN 7 VDD PWR 8 CLKIN IN SEL1 SEL0 Description SEL0 and SEL1 pins select the external clock frequency from among 74.17582MHz, 74.25MHz and 60MHz. Please refer to the table of External clock frequency selection” shown below. External clock frequency selection pin. Same as SEL0. Power External clock input pin. It accepts one of the four frequencies selected by SEL0 and SEL1. Input Frequency 0 0 74.17582MHz (=74.25 MHz/1.001) 0 1 74.25 MHz 1 0 Not in use 1 1 60.0 MHz Ordering Information Part Number Marking Shipping Packaging Package Temperature Range AK8146B 146B Tape and Reel 8-pin USON -20 to 85 ℃ Oct-2008 MS0994-E-00 -2- The brand name of AKEMD’s IC’s AK8146BB Absolute Maximum Rating Over operating free-air temperature range unless otherwise noted (1) Items Supply voltage Input voltage Symbol Ratings Unit VDD -0.3 to 4.6 V Vin VSS-0.3 to VDD+0.3 V IIN ±10 mA Tstg -55 to 130 °C Input current (any pins except supplies) Storage temperature Note (1) Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to absolute-maximum-rating conditions for extended periods may affect device reliability. Electrical parameters are guaranteed only over the recommended operating temperature range. ESD Sensitive Device This device is manufactured on a CMOS process, therefore, generically susceptible to damage by excessive static voltage. Failure to observe proper handling and installation procedures can cause damage. AKEMD recommends that this device is handled with appropriate precautions. Recommended Operation Conditions Parameter Operating temperature Symbol Conditions Min Ta -20 Supply voltage (1) VDD 2.7 Output Load Capacitance Cp1 Pin: CLK1,CLK2 Typ Max Unit 85 °C 3.0 3.3 V 15 pF Note: (1) Power to VDD requires to be supplied from a single source. line should be installed close to each VDD pin. MS0994-E-00 A decoupling capacitor of 0.1mF for power supply Oct-2008 -3- The brand name of AKEMD’s IC’s AK8146BB DC Characteristics All specifications at VDD: over 2.7 to 3.3V, Ta: -20 to +85℃, unless otherwise noted Parameter Symbol Conditions High Level Input Voltage VIH Pin: SEL0 SEL1 Low Level Input Voltage VIL Pin: SEL0 SEL1 Input Leakage Current IL Pin: SEL0 SEL1 High Level Output Voltage 1 VOH Low level Output Voltage 1 VOL High Level Output Voltage 2 VOH Low level Output Voltage 2 VOL Pin: CLK1, CLK2 IOH=-4.0mA MIN TYP 0.7*VDD -10 0.3*VDD V +10 µA 0.8VDD V 0.2VDD IOL=+4.0mA IOH=-1.5mA Unit V Pin: CLK1, CLK2 Pin: CLK1, CLK2 MAX 0.9VDD V V Pin: CLK1, CLK2 IOL=+0.1mA 0.05VDD V 6.4 mA No load, CLKIN=74.25MHz Current Consumption IDD 5.0 TYP case is VDD=3.0V, Ta=25℃ AC Characteristics All specifications at VDD: over 2.7 to 3.3V, Ta: over -20 to +85℃, unless otherwise noted Parameter Symbol External Clock Input Conditions MIN Pin: CLKIN Pin: CLKIN, Specified at 0.5*Clock Amplitude Pin: CLK1 External Clock Duty Period Jitter (1) (2) Pin: CLK1 Vpp 30 (1) Output Clock Rise Time (1) Output Clock Fall Time (3) Power-up Time trise tfall Pin: CLK1 ,CLK2 Cp1=15pF Pin: CLK1 ,CLK2 Cp1=15pF Pin: CLK1 Cp1=15pF 45 Unit MHz 0.7 Pin: CLK2 Output Clock Duty (1) Cycle MAX 74.17582 74.25 60.0 Pin: CLKIN External Clock Input TYP 50 1.4 70 % 125 ps 205 ps 55 % 4.0 ns 4.0 ns 2.8 ms (1) Design Value (2) 5sigma in 10000 sampling (3) The time that output reaches the target frequency within accuracy of ±100ppm from the point that the power supply reaches VDD Oct-2008 MS0994-E-00 -4- The brand name of AKEMD’s IC’s AK8146BB Package Information · Mechanical data 2.20±0.05 S 1 0.05 S 1.90±0.05 0.50 0.05 M 0.20±0.05 · Marking 8 a: #1 Pin Index : ｂ: Part number : ｃ: Date code (3 digits) : Circle 146B YMA 5 146B YMA １ MS0994-E-00 4 Oct-2008 -5- The brand name of AKEMD’s IC’s AK8146BB IMPORTANT NOTICE These products and their specifications are subject to change without notice. When you consider any use or application of these products, please make inquiries the sales office of Asahi Kasei EMD Corporation (AKEMD) or authorized distributors as to current status of the products. AKEMD assumes no liability for infringement of any patent, intellectual property, or other rights in the application or use of any information contained herein. Any export of these products, or devices or systems containing them, may require an export license or other official approval under the law and regulations of the country of export pertaining to customs and tariffs, currency exchange, or strategic materials. AKEMD products are neither intended nor authorized for use as critical componentsNote1) in any safety, life support, or other hazard related device or systemNote2), and AKEMD assumes no responsibility for such use, except for the use approved with the express written consent by Representative Director of AKEMD. As used here: Note1) A critical component is one whose failure to function or perform may reasonably be expected to result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. Note2) A hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property. It is the responsibility of the buyer or distributor of AKEMD products, who distributes, disposes of, or otherwise places the product with a third party, to notify such third party in advance of the above content and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold AKEMD harmless from any and all claims arising from the use of said product in the absence of such notification. Oct-2008 MS0994-E-00 -6-