SM802110UMGR

SM802110 ClockWorks™ CPRI 153.6MHz Ultra-Low Jitter, LVPECL Frequency Synthesizer General Description The SM802110 is a member of the ClockWorks™ family of devices from Micrel and provides an extremely low-noise timing solution for CPRI clock signals. It is based upon a unique patented RotaryWave® architecture that provides very low phase noise. The device operates from a 3.3V or 2.5V power supply and synthesizes an LVPECL output clock at 153.6MHz. The SM802110 accepts a 30.72MHz LVCMOS reference clock. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. Features • Generates an LVPECL clock outputs at 153.6MHz • 2.5V or 3.3V operating range • Typical phase jitter @ 153.6MHz (2MHz to 20MHz): 99fs (typical) at 3.3V • Industrial temperature range • Green, RoHS, and PFOS compliant • Available in 24-pin 4x4mm QFN Applications • CPRI • OBSAI ___________________________________________________________________________________________________________ Block Diagram ClockWorks is a trademark of Micrel, Inc RotaryWave is a registered trademark of Multigig, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com January 2011 M9999-012111-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SM802110 Ordering Information Part Number SM802110UMG SM802110UMGR Note: 1. Devices are Green, RoHS, and PFOS compliant. Marking 802110 802110 Shipping Tube Tape & Reel Junction Temperature Range(1) –40°C to +85°C –40°C to +85°C Package 24-Pin QFN 24-Pin QFN Pin Configuration 24-Pin QFN (Top View) Pin Description Pin Number 16, 17 1, 18 2, 22 3, 4, 20, 21, 23, 24 Pin Name /Q, Q VDDO VSSO NC Pin Type O, (DIF) PWR PWR Pin Level LVPECL Pin Function Differential Clock Output Power Supply for Clock Output Power Supply Grounds for Clock Output No Connect, Do not connect anything to these pins. PLL Bypass, Selects Output Source 5 PLL_BYPASS I, (SE) LVCMOS 0 = Normal PLL Operation 1 = Output from Input Reference Clock 45KΩ pull-down 7, 10, 11, 12, 15, 19 8 9 6, 13, 14 TEST VDD REF_IN VSS PWR I, (SE) PWR LVCMOS Factory Test Pins. Do not connect anything to these pins. Core Power Supply Reference Clock Input Core Power Supply Ground. January 2011 2 M9999-012111-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SM802110 Absolute Maximum Ratings(1) Supply Voltage (VDD, VDDO) .........................................+4.6V Input Voltage (VIN) .............................. −0.50V to VDD + 0.5V Lead Temperature (soldering, 20sec.)....................... 260°C Case Temperature ..................................................... 115°C Storage Temperature ................................–65°C to +150°C Operating Ratings(2) Supply Voltage (VDD, VDDO) .................. +2.375V to +3.465V Ambient Temperature (TA) .......................... –40°C to +85°C Junction Thermal Resistance(3) QFN (θJA) Still-Air.........................................................50°C/W QFN (ψJA) Junction-to-Board........................................30°C/W DC Electrical Characteristics(4) VDD = VDDO = 3.3V ±5% or 2.5V ±5% VDD = 3.3V ±5%, VDDO= 3.3V ±5% or 2.5V ±5% TA = −40°C to +85°C. Symbol Parameter Condition Min. 2.375 3.135 Typ. 2.5 3.3 77 Max. 2.625 3.465 98 Units V V mA VDD, VDDO VDD, VDDO IDD 2.5V Operating Voltage 3.3V Operating Voltage Supply current, VDD + VDDO Outputs open LVPECL DC Electrical Characteristics(4) VDD = VDDO = 3.3V ±5% or 2.5V ±5% VDD = 3.3V ±5%, VDDO = 3.3V ±5% or 2.5V ±5% TA = −40°C to +85°C. RL = 50Ω to VDDO − 2V Symbol Parameter Condition Min. VDDO – 1.145 VDDO – 1.945 0.6 Typ. VDDO – 0.97 VDDO – 1.77 0.8 Max. VDDO – 0.845 VDDO – 1.645 1.0 Units V V V VOH VOL VSWING Note: 1. Output High Voltage Output Low Voltage Output Voltage Swing Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. The circuit is designed to meet the AC and DC specifications shown in the above table(s) after thermal equilibrium has been established. 2. 3. 4. January 2011 3 M9999-012111-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SM802110 LVCMOS (PLL_BYPASS) DC Electrical Characteristics(4) VDD = 3.3V ±5% or 2.5V ±5%, TA = –40°C to +85°C. Symbol Parameter Condition Min. 2 −0.3 Typ. Max. VDD + 0.3 0.8 150 −5 Units V V μA μA VIH VIL IIH IIL Input High Voltage Input Low Voltage Input High Current Input Low Current VDD = VIN = 3.465V VDD = 3.465V, VIN = 0V REF_IN DC Electrical Characteristics(4) VDD = 3.3V ±5% or 2.5V ±5%, TA = –40°C to +85°C. Symbol Parameter Condition Min. 1.1 −0.3 Typ. Max. VDD + 0.3 0.6 5 Units V V μA VIH VIL IIN Input High Voltage Input Low Voltage Input Current VDD = 3.465V, VIN = 0V to VDD −5 AC Electrical Characteristics(4, 5) VDD = VDDO = 3.3V ±5% or 2.5V ±5% VDD = 3.3V ±5%, VDDO = 3.3V ±5% or 2.5V ±5% TA = −40°C to +85°C. RL = 50Ω to VDDO − 2V Symbol Parameter Condition Min. Typ. 153.6 30.72 Max. Units MHz MHz 350 52 20 ps % ms fs FOUT FREF TR/TF ODC TLOCK Tjit(∅) Output Frequency Reference Input Frequency LVPECL Output Rise/Fall Time Output Duty Cycle PLL Lock Time RMS Phase Jitter (6) Spurious Noise Components Output = 153.6 MHz Integration Range (2MHz – 20MHz) 30.72MHz 20% – 80% 80 48 175 50 99 −70 dBc Notes: 5. 6. All phase noise measurements were taken with an Agilent 5052B phase noise system. Ref_IN driven with a low noise source ClockWorks SM802001 programmed for a 30.77MHz CMOS output. January 2011 4 M9999-012111-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SM802110 Phase Noise Plot 153.8MHz 2MHz-20MHz 99fS Output is 153.85MHz with a 30.77MHz Input January 2011 5 M9999-012111-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SM802110 Figure 1. Duty Cycle Timing Figure 2. All Outputs Rise/Fall Time Figure 3. RMS Phase Noise/Jitter Figure 4. LVPECL Output Load and Test Circuit January 2011 6 M9999-012111-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SM802110 Package Information 24-Pin QFN MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2011 Micrel, Incorporated. January 2011 7 M9999-012111-A hbwhelp@micrel.com or (408) 955-1690