AK8174B Single Clock Generator AK8174B Features Description The AK8174B is a single clock generator IC with an integrated PLL. It can generate a 38.000MHz clock from a 27MHz master clock input frequency. A high performance PLL locks to the master clock input, generating a low jitter, highly accurate clock output without an external crystal. Output Frequency Range: 38.000MHz Input Frequency: 27MHz Low Jitter Performance: 15 ps (Typ.) Period,1σ Low Current Consumption: 2.4 mA (Typ.) Output Load: 15pF (max.) Supply Voltage: 2.7 – 3.6V Operating Temperature Range: -20 to +85℃ Package: 4-pin USON(lead free) Body size: 1.3 mm x 1.1mm Applications Digital still camera Block Diagram VDD CLKIN INPUT Buffer PLL OUTPUT Buffer CLKOUT VSS AK8174B Single Clock Generator MS1164-E-00 Mar-10 -1- AK8174B Pin Descriptions 4:VSS 1:VDD Package: 4-Pin USON (Top View) *lead-free 3:CLKIN 2:CLKOUT Pin No. Pin Name Pin Type 1 VDD -- 2 CLKOUT OUT 3 CLKIN IN Clock input (27MHz) When CLKIN connects VDD or VSS, CLKOUT outputs low. 4 VSS -- Ground. Description Power Supply Clock output Output clock frequency is 38.000MHz. Ordering Information Part Number Marking Shipping Packaging Package Temperature Range AK8174BU 74B(AK8174B) Tape and Reel 4-pin USON -20 to 85 ℃ Mar-10 MS1164-E-00 -2- AK8174B Absolute Maximum Rating Over operating free-air temperature range unless otherwise noted Items (1) Symbol Supply Voltage Ratings Unit V VDD -0.3 to 4.6 Input Voltage Vin VSS-0.3 to VDD+0.3 V Input Current (any pins except supplies) IIN ±10 mA Tstg -55 to 130 °C 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. AKM recommends that this device is handled with appropriate precautions. Recommended Operation Conditions Parameter Operating Temperature Supply Voltage Symbol Min Ta -20 VDD 2.7 Input Clock Frequency Fin Input Clock Duty Cycle Findc Output Load Capacitance Conditions Cp1 Typ Max Unit 85 °C 3.0 3.6 V 27 30 Pin: CLKOUT MS1164-E-00 50 MHz 70 % 15 pF Mar-10 -3- AK8174B DC Characteristics All specifications at VDD: over 2.7 to 3.6V, Ta: -20 to +85℃, Input Frequency: 27MHz, unless otherwise noted Parameter Conditions Symbol High Level Input Voltage VIH Pin: CLKIN Low Level Input Voltage VIL Pin: CLKIN IL 1 Pin: CLKIN Input Current MIN TYP MAX Unit 0.7VDD V -10 0.3VDD V +10 μA Pin: CLKOUT High Level Output Voltage VOH IOH=-4mA 0.8VDD V (VDD=3.0V, Ta=25℃) Pin: CLKOUT Low Level Output Voltage VOL Current Consumption IDD IOL=+4mA 0.2VDD V (VDD=3.0V, Ta=25℃) No load 2.4 (VDD=3.0V, Ta=25℃) mA AC Characteristics All specifications at VDD: over 2.7 to 3.6V, Ta: -20 to +85℃, Input Frequency: 27MHz, unless otherwise noted Parameter Symbol Output Clock Frequency Output Clock Duty Cycle Output Clock Rise Time Output Clock Fall Time Output Clock Jitter Output Lock Time (2) (3) (2) (3) (2) (3) (1) (2) (3) Fo Conditions MIN CLKIN=27MHz Fodc TYP MAX 38.0000 45 50 Unit MHz 55 % trise 0.2VDD to 0.8VDD 4.0 ns tfall 0.2VDD to 0.8VDD 4.0 ns Jit Period, 1σ 15 ps tlock Power-up 0.1 ms (1) The time that output reaches the target frequency within accuracy of ±0.1% from the point that the power supply reaches VDD (2) With the load capacitance specified by the recommended operation conditions (3) Design value Mar-10 MS1164-E-00 -4- AK8174B Package Information • Mechanical data (Units:mm) 0.58＋0.02 －0.03 1.30±0.05 1.10±0.05 S 0.05 0.25±0.05 M 0.25±0.05 0.525±0.05 0.05 S .05 C0 0.50 • Marking b 74 B YMA a: #1 Pin Index b: Part number c: Date code (3 digits) c a AKM is the brand name of AKM’s IC’s. AKM and the logo - - are the brand of AKM’s IC’s and identify that AKM continues to offer the best choice for high performance mixed-signal solution under this brand. MS1164-E-00 Mar-10 -5- AK8174B • RoHS Compliance All integrated circuits form Asahi Kasei Microdevices Corporation (AKM) assembled in “lead-free” packages* are fully compliant with RoHS. (*) RoHS compliant products from AKM are identified with “Pb free” letter indication on product label posted on the anti-shield bag and boxes. IMPORTANT NOTICE l 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 Microdevices Corporation (AKM) or authorized distributors as to current status of the products. l AKM assumes no liability for infringement of any patent, intellectual property, or other rights in the application or use of any information contained herein. l 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. l AKM products are neither intended nor authorized for use as critical componentsNote1) in any safety, life support, or other hazard related device or systemNote2), and AKM assumes no responsibility for such use, except for the use approved with the express written consent by Representative Director of AKM. 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. l It is the responsibility of the buyer or distributor of AKM 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 AKM harmless from any and all claims arising from the use of said product in the absence of such notification. Mar-10 MS1164-E-00 -6-