DSC1018 1.8V Low-Power CMOS Oscillator General Description Features The DSC1018 is a 1.8V fixed frequency MEMS based PureSiliconTM Oscillator. It can be factory programmed to any frequency from 1 to 150MHz. The DSC1018 incorporates an all silicon resonator that is extremely robust and nearly immune to stress related fractures, common to crystal based oscillators. Without sacrificing the performance and stability required of today's systems, a crystal-less design allows for a higher level of reliability, making the DSC1018 ideal for rugged, industrial, and portable applications where stress, shock, and vibration can damage quartz crystal based systems. Available in industry standard packages, the DSC1018 can be "dropped-in" to the same PCB footprint as standard crystal oscillators. Frequency Range: 1 to 150MHz Exceptional Stability over Temperature o 25 PPM, 50 PPM Operating voltage o 1.65 to 1.95V Operating Temperature Range o Industrial -40C to 85C o Ext. Commercial -20C to 70C o Commercial 0C to 70C Low Operating and Standby Current o 3mA Operating (40MHz) o 1uA Standby Ultra Miniature Footprint o 2.5 x 2.0 x 0.85 mm o 3.2 x 2.5 x 0.85 mm o 5.0 x 3.2 x 0.85 mm o 7.0 x 5.0 x 0.85 mm Excellent Shock and Vibration Resistance Lead Free, RoHS & Reach SVHC Compliant Benefits Block Diagram VDD Resonator Output VCO PFD Applications Frac-N PLL Standby# Pin for pin "drop in" replacement for industry standard oscillators Semiconductor level reliability, significantly higher than quartz Short mass production lead-times Longer Battery Life / Reduced Power Compact Plastic package Cost Effective GND Mobile Applications Consumer Electronics Portable Electronics CCD Clock for VTR Cameras Low Profile Applications Industrial (pin1) _____________________________________________________________________________________________________________________________ _________________ DSC1018 Page 1 MK-Q-B-P-D-031809-05-8 1.8V DSC1018 Low-Power CMOS Oscillator Absolute Maximum Ratings1 Item Min. Max Unit Input Voltage -0.3 VDD+0.3 V Junction Temp - +150 C Storage Temp -55 +150 C Soldering Temp - +260 C ESD HBM - Ordering Code Condition DSC1018 - 032.0000 T Family 40 sec max. Package, Temp & Stability V Tape/ Reel Output Freq 1.0 to 150MHz 2000 MM CDM CE1 200 500 * See Ordering Information for details Recommended Operating Conditions Parameter Symbol Range Supply Voltage VDD 1.65 - 1.95V Output Load ZL R>10K, C15pF T -40 - +85 C -20 - +70 C 0 - +70 C Operating Temperature Option 1 Option 2 Option 3 Specifications Parameter Frequency Frequency Tolerance Option 1 Option 2 Option 3 Supply Current, no load Supply Current, standby Symbol Condition Min. f0 Single Frequency 1 f IDD -40C to +85C -20C to +70C 0C to +70C CL=0p 1 to 40MHz RL= 40 to 80MHz T=25 80 to 125MHz C 125 to 150MHz IDD T=25C VOH VOL CL=15pF tR tF CL=15pF; T=25C 20%/80%*VDD Output Startup Time2 tSU T=25C Output Disable Time tDA Output Logic Levels Output logic high Output logic low Output Transition time Rise Time Fall Time Typ. Max. Unit 150 MHz 25,50 25,50 25,50 3 4 5 6 10 ppm mA 1.0 uA 0.2*VDD Volts 1.3 1.3 2 2 ns 1.5 3 ms 20 100 ns 0.8*VDD - Output Duty Cycle SYM 45 55 % Input Logic Levels Input logic high Input logic low VIH VIL 0.75*VDD - 0.25* VDD Volts Jitter, Cycle to Cycle JCC F = 100MHz3 95 ps Notes: 1. Absolute maximum ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated beyond these limits. 2. tSU is time to stable output frequency after VDD is applied. tSU and tEN (after EN is asserted) are identical values. 3. See typical cycle to cycle jitter graph for frequency dependence. _____________________________________________________________________________________________________________________________ _________________ DSC1018 Page 2 MK-Q-B-P-D-031809-05-8 1.8V DSC1018 Low-Power CMOS Oscillator Nominal Performance Characteristics 1.8V Characteristics Supply Current Standby Current 1 Ta = 25C 1pF 8pF 15pF Standby Current (A) Supply Current (mA) 16 12 8 4 0 -40C 0.8 0.6 0.4 0.2 50 100 Frequency (MHz) 150 0 50 100 Frequency (MHz) 150 Fall Time Rise Time 2 2 -40C 25C 85C -40C 1.5 Fall Time (ns) Rise Time (ns) 85C 0 0 1 0.5 0 25C 85C 1.5 1 0.5 0 0 50 100 Frequency (MHz) 150 0 Period Jitter 50 100 Frequency (MHz) 150 Cycle to Cycle Jitter 40 200 25C 25C 30 150 Jitter (ps) RMS Jitter (ps) 25C 20 10 100 50 0 0 0 50 100 Frequency (MHz) 150 0 50 100 Frequency (MHz) 150 _____________________________________________________________________________________________________________________________ _________________ DSC1018 Page 3 MK-Q-B-P-D-031809-05-8 1.8V DSC1018 Low-Power CMOS Oscillator Output Waveform tR tF VOH Output VOL tEN 1/fo tDA VIH Standby# VIL Standby Function Standby# Output (pin 1) (pin 3) Hi Level Output ON Open (no connect) Output ON Low Level High Impedance Test Circuit IDD VDD 0.01uF 4 3 1 2 15pF *VSD *VSD = Standby# Logic Level Input _____________________________________________________________________________________________________________________________ _________________ DSC1018 Page 4 MK-Q-B-P-D-031809-05-8 1.8V DSC1018 Low-Power CMOS Oscillator Board Layout (recommended) Solder Reflow Profile 20-40 Sec Se 3C / 217C 200C 60-150 Sec S 6C/ ax cM Se 3C / 25C 60-180 Sec Pre heat 8 min max Reflow x. 150C Ma . ec Temperature (C) cM ax . 260C Cool MSL 1 @ 260C refer to JSTD-020C Ramp-Up Rate (200C to Peak Temp) 3C/Sec Max. Preheat Time 150C to 200C 60-180 Sec Time maintained above 217C 60-150 Sec 255-260C Peak Temperature Time within 5C of actual Peak 20-40 Sec 6C/Sec Max. Ramp-Down Rate Time 25C to Peak Temperature 8 min Max. Time _____________________________________________________________________________________________________________________________ _________________ DSC1018 Page 5 MK-Q-B-P-D-031809-05-8 1.8V DSC1018 Low-Power CMOS Oscillator Package Dimensions 7.0 x 5.0 mm Plastic Package External Dimensions 7.00.10 [0.2760.004] #4 Recommended Land Pattern* 5.08 [0.200] 5.08 [0.2] #3 #4 #3 2.6 [0.102] 2.6 [0.102] 3.5 [0.138] 0.2 [0.008] 2.2 [0.087] #2 #1 #2 5.00.10 [0.1970.004] #1 1.4 [0.055] 0.2 [0.008] 0.850.05 [0.0330.002] o o o o o 1.4 [0.055] 0.2 [0.008] 1.4 [0.055] 1.2 [0.047] No. 1 2 3 4 o Pin Terminal Standby# GND Output VDD *Note: The center pad is not connected internally and should be left unconnected or tied to GND. units: mm [inch] 5.0 x 3.2 mm Plastic Package External Dimensions 2.54 [0.100] 2.54 [0.100] 50.10 [0.1970.004] #4 Recommended Land Pattern #3 #3 #4 1.2 [0.047] 2.1 [0.083] 0.2 [0.008] 1.1 [0.043] 0.1 [0.004] #1 #2 3.20.10 [0.1260.004] #2 1.2 [0.047] #1 0.1 [0.004] 1.2 [0.047] 0.9 [0.035] 0.850.05 [0.0330.002] No. 1 2 3 4 Pin Terminal Standby# GND Output VDD units: mm [inch] _____________________________________________________________________________________________________________________________ _________________ DSC1018 Page 6 MK-Q-B-P-D-031809-05-8 1.8V DSC1018 Low-Power CMOS Oscillator 3.2 x 2.5 mm Plastic Package External Dimensions 3.20.05 [0.1260.002] #4 Recommended Land Pattern 2.1 [0.083] 2.1 [0.083] #3 #3 #4 0.9 [0.035] 0.9 [.035] 1.0 [0.039] CO.25 #1 #2 #2 0.90.05 [0.0350.002] #1 0.2 [0.008] 2.50.05 [0.0980.002] 0.9 [0.035] 0.80.1 [0.0310.004] Pin Terminal Standby# GND Output VDD No .1 2 3 4 0.850.05 [0.0330.002] units: mm [inch] 2.5 x 2.0 mm Plastic Package External Dimensions 2.50.05 [0.0980.002] #4 Recommended Land Pattern 1.65 [0.065] 1.65 [0.065] #3 #3 #4 0.7 [0.028] 0.7 [0.028] 0.85 [0.033] CO.25 #1 #2 2.00.05 [0.0790.002] #2 0.650.05 [0.0260.002] #1 0.2 [0.008] 0.65 [0.026] 0.650.10 [0.0260.004] 0.850.05 [0.0330.002] No .1 2 3 4 Pin Terminal Standby# GND Output VDD units: mm [inch] _____________________________________________________________________________________________________________________________ _________________ DSC1018 Page 7 MK-Q-B-P-D-031809-05-8 1.8V DSC1018 Low-Power CMOS Oscillator Ordering Information DSC1018 PTS - xxx.xxxx T PART NUMBERING GUIDE Package (Plastic QFN) P=A: P=B: P=C: P=D: 7.0x5.0mm 5.0x3.2mm 3.2x2.5mm 2.5x2.0mm Temperature Stability Frequency T=C: 0o ~ +70o C T=E: -20o ~ +70o C T=I: -40o ~ +85o C S=1: 50ppm S=2: 25ppm XXX.XXXX - Packing Option Blank: Tubes T: Tape & Reel Example: DSC1018CE1-123.0000T The example part number above is a 123.0000MHz oscillator in Plastic 3.2x2.5mm package, with 50ppm stability over an operating temperature of -20 to +70oC, shipped in Tape and Reel. The reel size (7" or 13" diameter) will be determined by the factory based on quantity. Disclaimer: Discera makes no warranty of any kind, express or implied, with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Discera reserves the right to make changes without further notice to materials described herein. Discera does not assume any liability arising from the application or use of any product or circuit described herein. Discera does not authorize its products for use a critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Discera's product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Discera against all charges. DISCERA, Inc. Phone: +1 (408) 432-8600 1961 Concourse Drive, Fax: +1 (408) 432-8609 San Jose, California 95131 Email: sales@discera.com USA www.discera.com _____________________________________________________________________________________________________________________________ _________________ DSC1018 Page 8 MK-Q-B-P-D-031809-05-8 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Micrel: DSC1018DE2-040.0000T DSC1018CI1-038.4000T DSC1018CI2-022.5792T DSC1018BE1-024.0000T DSC1018DI1-025.0000T DSC1018CI1-026.0000T DSC1018DI1-028.6360T DSC1018DI2-026.0000T DSC1018DI2027.0000T DSC1018DI2-070.0000T DSC1018DE1-004.7500T DSC1018DI1-025.0000 DSC1018CE2-040.0000T DSC1018CE1-026.0000T DSC1018BI1-125.0000T DSC1018CI2-022.5792 DSC1018DI1-028.6363T DSC1018DI1050.0000T DSC1018BE1-028.6363T DSC1018CI1-100.0000T DSC1018DC1-022.0000T DSC1018DI1-024.0000T DSC1018BC1-054.0000T DSC1018DC2-026.0000T DSC1018DE1-027.0000T1