ASAHI KASEI EMD CORPORATION Low Power Multiclock Generator with VCXO AK8130B Features Description The AK8130B is a member of AKEMD’s low power multi clock generator family designed for a feature rich DTV or STB, requiring a range of system clocks with high performance. The AK8130B generates different frequency clocks from a 27MHz crystal oscillator and provides them to up to four outputs configured by pin-setting. The on-chip VCXO accepts a voltage control input to allow the output clocks to vary by ±110 ppm for synchronizing to the external clock system. Both circuitries of VCXO and PLL in AK8130B 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 AK8130B is available in a 16-pin SSOP package. 27MHz Crystal Input Four Frequency-Selectable Clock Outputs One 27MHz-Reference Output Selectable Clock out Frequencies: - 74.1758, 74.250MHz - 25.000MHz - 4.9152, 12.000, 48.000MHz - 24.576, 33.333MHz Built-in VCXO - Pull Range: ±110ppm (Min.) Low Jitter Performance - Period Jitter: 150 psec (Typ.) at CLK1-4 - Long Term Jitter : 160 psec (Typ.) at REFOUT Low Current Consumption: 16.5mA (Typ.) at 3.3V Supply Voltage: 3.0 – 3.6V Operating Temperature Range: -20 to +85℃ Package: 16-pin SSOP (Lead free) Applications Digital TV Sets Personal Video Recorders Set-Top-Boxes Multi Media Receivers Block Diagram VDD X1 X2 VIN Voltage Controlled Crystal Oscillator PLL1 PLL1 PLL2 Divide Logic and Output Control PLL3 CLK1 CLK2 CLK3 CLK4 S0 S1 REFOUT S2 GND AK8130B Multi Clock Generator MS0668-E-02 Feb-08 -1- The brand name of AKEMD’s IC’s AK8130B Pin Descriptions Package: 16-Pin SSOP(Top View) X1 1 16 S0 2 15 VDD3 S1 3 14 S2 X2 VIN 4 13 VDD2 VDD1 5 12 GND2 GND1 6 11 CLK4 CLK1 7 10 CLK3 CLK2 8 9 Pin No. Pin Name REFOUT Pin Type Description 1 X1 XO Crystal connection, Connect to 27.000MHz crystal 2 S0 IN Clock Out Frequency Select 0, See Table 1 for the selection (1) 3 S1 IN Clock Out Frequency select 1, See Table 1 for the selection (1) 4 VIN IN VCXO Control Voltage Input 5 VDD1 -- Power Supply 1 6 GND1 -- Ground 1 7 CLK1 OUT Clock output 1, See Table 1 for its selectable frequency 8 CLK2 OUT Clock output 2, See Table 1 for its selectable frequency 9 REF OUT OUT Reference Clock Output of VCXO based on 27.000MHz Crystal 10 CLK3 OUT Clock output 3, See Table 1 for its selectable frequency (2) 11 CLK4 OUT Clock output 4, See Table 1 for its selectable frequency (2) 12 GND2 -- Ground 2 13 VDD2 -- Power Supply 2 14 S2 IN Clock Out Frequency select 1, See Table 1 for the selection 15 VDD3 -- Power Supply 3 16 X2 XI Crystal connection, Connect to 27.000MHz crystal (2) (1) (1) Internal pull up 360kΩ (2) Internal pull down 510kΩ Ordering Information Part Number Marking Shipping Packaging Package Temperature Range AK8130B 8130B Tape and Reel 16-pin SSOP -20 to 85 ℃ Feb-08 MS0668-E-02 -2- The brand name of AKEMD’s IC’s AK8130B Absolute Maximum Rating Over operating free-air temperature range unless otherwise noted Items Symbol Supply voltage (1) 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. AKEMD recommends that this device is handled with appropriate precautions. Recommended Operation Conditions Parameter Operating temperature Supply voltage (1) Output Load Capacitance Symbol Conditions Min Ta -20 VDD 3.0 Typ Max Unit 85 °C 3.3 3.6 V Cp1 Pin: CLK1-4 15 pF Cp2 Pin: REFOUT 25 pF Note: (1) Power to VDD1, VDD2 and VDD3 requires to be supplied from a single source. 0.1µF for power supply line should be installed close to each VDD pin. MS0668-E-02 A decoupling capacitor of Feb-08 -3- The brand name of AKEMD’s IC’s AK8130B DC Characteristics All specifications at VDD: over 3.0 to 3.6V, Ta: Parameter -20 to +85℃, 27MHz Crystal, unless otherwise noted Conditions Symbol MIN TYP MAX Unit High Level Input Voltage VIH Pin: S0,S1,S2 Low Level Input Voltage VIL Pin: S0,S1,S2 Input Current 1 IL 1 Pin: S0,S1,S2 -20 +10 μA Input Current 2 IL 2 PIN: VIN -3 +3 μA High Level Output Voltage VOH Low level Output Voltage VOL 0.7VDD V 0.3VDD Pin: CLK1-4, REFOUT V 0.8VDD IOH=-4mA V Pin: CLK1-4, REFOUT 0.2VDD IOL=+4mA V No load Current Consumption IDD Clock out selection by note Ta=25℃ (1) 16.5 mA (1) Pin setting for output clock selection: [S2:S0] = HLH AC Characteristics All specifications at VDD: over 3.0 to 3.6V, Ta: over -20 to +85℃, 27MHz Crystal, unless otherwise noted Parameter Symbol Conditions MIN Crystal Clock Frequency VCXO Pullable Range Period Jitter VIN at over 0 to VDD V GVCXO (4) Long Term Jitter 150 ppm/ V CLK1-4 150 ps 0.85 ns 160 ps (1) Pin: REFOUT Pin: CLK1-4 Pin: CLK1-4 Pin: REFOUT Output Transition Time Pin: CLK1-4 (6) (2 ) (1) tfall Power-up Time (2) (1) trise Pin: REFOUT Output Clock Fall Time ppm VIN range at 1.5V±1.0V Pin: CLK1-4 Output Clock Duty Cycle Unit MHz ±110 CLK1 at 74.250MHz 1000 cycle delay REFOUT at 27.000MHz 1000 cycle delay (5) Output Clock Rise Time MAX 27.0000 (3) VCXO Gain TYP (2 ) (1) Pin: CLK1 at 74.25 or 74.175MHz 45 50 55 % 40 50 60 % 1.5 ns 2.5 ns 1.5 ns 2.5 ns 1 ms 60 µs (1) Measured with load capacitance of 15pF (2) Measured with load capacitance of 25pF (3) Pullable range depends on crystal characteristics, on-chip load capacitance, and stray capacity of PCB. Min. ±110ppm is applied to AKEMD’s authorized test condition. (4) ±3σ in 1000 sampling or more (5) ±3σ in 5000 sampling or more (6) Time to settle output into ±20ppm of specified frequency Feb-08 MS0668-E-02 -4- The brand name of AKEMD’s IC’s AK8130B Output clock frequency selection The AK8130B generates a range of low-jitter and hi-accuracy clock frequencies with three built-in PLLs and provides to up to four assigned outputs. A frequency selection at assigned output pin is configured by pin-setting of S0 (Pin2), S1 (Pin3), and S2 (Pin14). The selectable frequency is shown in Table 1.. Table 1: Clock output Frequency Selection Pin S2 (Pin 14) L L L L H H H H S1 (Pin 3) L L H H L L H H Clock Output Frequency (MHz) S0 (Pin 2) L H L H L H L H CLK1 (Pin 7) 74.250 74.250 74.1758 74.1758 74.1758 74.1758 74.1758 74.1758 CLK2 (Pin 8) 25.000 25.000 25.000 25.000 25.000 25.000 25.000 OFF CLK3 (Pin 10) 48.000 12.000 48.000 12.000 OFF 4.9152 4.9152 OFF CLK4 (Pin 11) 33.333 OFF 33.333 OFF 33.333 OFF 24.576 OFF Voltage Control Crystal Oscillator (VCXO) The AK8130B has a voltage control crystal oscillator (VCXO), featuring fine frequency tuning for 27MHz of primary clock frequency by external DC voltage control. This tuning enables output clock frequency to synchronize the external clock system. VIN (Pin 4) accepts DC voltage control from a processor or a system controller, and pulls the primary frequency of crystal to higher or lower. This pulling range is determined by crystal characteristic, on-chip load capacitor, and stray capacitance of PCB. The AK8130B is designed to range ±110ppm of primary frequency in AKEMD’s authorized condition, and the typical pulling profile is shown in Figure 1. For details about the condition and other specific crystal application case, refer the AK8130 Family application note. 27.0MHz VCXO Characteristics NDK AT-41CD2（CL=12.0pF） （Cext1=18.0pF,Cext2=5.0pF) 150 Δf(ppm) 100 50 0 -50 0 0.5 1 1.5 2 2.5 3 3.5 -100 -150 VIN(V) Figure 1: Typical VCXO Pulling Profile MS0668-E-02 Feb-08 -5- The brand name of AKEMD’s IC’s AK8130B Typical Connection Diagram +3.3V typ. 27.0MHz AT Cut Crystal MPEG-TS DECODER Cext2 Cext1 AK8130B CTL OUT2 1:X1 X2:16 CTL OUT0 2:S0 VDD3:15 CTL OUT1 3:S1 DC Voltage CTL OUT (PWM) R11 C11 C1 C3 S2:14 C2 IEEE1394 4:VIN VDD2:13 5:VDD1 GND2:12 6:GND1 CLK4:11 USB I/F 7:CLK1 CLK3:10 12.0/48.0MHz 8:CLK2 REFOUT:9 24.576MHz Ethernet I/F 25.0MHz REF CLK IN HDMI LVDS I/F 74.25/74.1758MHz GND Figure 2: Typical Connection Diagram C1, C2, C3: 0.1µF Cext1, Cext2: Depends on crystal characteristics. Refer the specification of the crystal. R11, C11: In case of interface by PWM. For right configuration, refer the specification of the applied processor. PCB Layout Consideration The AK8130B is a high-accuracy and low-jitter multi clock generator. For proper performances specified in this datasheet, careful PCB layout should be taken. The followings are layout guidelines based on the typical connection diagram shown in Figure 2 Power supply line – AK8130B has three power supply pins (VDD1-3) which deliver power to internal circuitry segments. A 0.1µF decoupling capacitor should be placed as close to each VDD pin as possible. Ground pin connection – AK8130B has two ground pins (GND1-2). These pin require connecting to plane ground which will eliminate any common impedance with other critical switching signal return. 0.1µF decoupling capacitors placed at VDD1, VDD2, and VDD3 should be grounded at close to the GND1pin, the GND2 pin, and the GND2, respectively. Crystal connection – Proper oscillation performance and pullable range are susceptible to stray or parasitic capacitors around crystal. The wiring traces to a crystal form X1 (Pin 1) and X2 (Pin 14) have equal lengths with no via and as short in length as possible. These traces should be also located away from any traces with switching signal. Feb-08 MS0668-E-02 -6- The brand name of AKEMD’s IC’s AK8130B Package Information • Mechanical data 16pin SSOP (Unit: mm) 5.00TYP 16 9 A 6.4±0.3 4.4TYP 1 8 0.22±0.1 0.65 0.15±0.1 1.25 TYP 0.1±0.1 Detail A 0.5±0.2 0-10° • Marking 16 9 b c 8130B XXXXX AKM a: b: c: d #1 Pin Index Part number Date code (5 digits) (1) Product Family Logo d a 1 8 (1) AKM is the brand name of AKEMD’s IC’s. AKM and the logo - - are the brand of AKEMD’s IC’s and identify that AKEMD continues to offer the best choice for high performance mixed-signal solution under this brand. • RoHS Compliance All integrated circuits form Asahi Kasei EMD Corporation (AKEMD) assembled in “lead-free” packages* are fully compliant with RoHS. (*) RoHS compliant products from AKEMD are identified with “Pb free” letter indication on product label posted on the anti-shield bag and boxes. MS0668-E-02 Feb-08 -7- The brand name of AKEMD’s IC’s AK8130B 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 EMD Corporation (AKEMD) or authorized distributors as to curren t status of the products. l AKEMD 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 AKEMD products are neither intended nor authorized for use as critical componentsNote1) in any safety, life support, or other hazard related device or system Note2), 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. l 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. Feb-08 MS0668-E-02 -8-