DSC1028 Low-Power CMOS Oscillator 2.8V Features General Description The DSC1028 is a 2.8V fixed frequency MEMS based PureSilicon™ Oscillator. It can be factory programmed to any frequency from 1 to 150MHz. The DSC1028 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 DSC1028 ideal for rugged, industrial, and portable applications where stress, shock, and vibration can damage quartz crystal based systems. Available in industry standard packages, the DSC1028 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 2.6 to 3.0V Operating Temperature Range o Industrial -40ºC to 85ºC o Ext. Commercial -20ºC to 70ºC o Commercial 0ºC to 70ºC 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# (pin1) 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 All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to implied warranties of merchantability or fitness for a particular use. Page 1 MK-Q-B-P-D-031809-03-7 2.8V DSC1028 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 - DSC1028 Condition 2000 200 CDM 500 - 032.0000 T Family Package, Temp & Stability 40 sec max. Tape/ Reel Output Freq 1.0 to 150MHz V HBM MM CE1 * See Ordering Information for details Ordering Code Recommended Operating Conditions Parameter Symbol Range Supply Voltage VDD 2.6 to 3.0V Output Load ZL R>10KΩ, C≤15pF 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 Δf IDD -40°C to +85°C -20°C to +70°C 0°C to +70°C CL=0p 1 to 40MHz RL=∞ 40 to 80MHz T=25° 80 to 125MHz C 125 to 150MHz IDD T=25°C VOH VOL CL=15pF tR tF CL=15pF; T=25°C 20%/80%*VDD Output Startup Time2 tSU T=25°C 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. All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to implied warranties of merchantability or fitness for a particular use. Page 2 MK-Q-B-P-D-031809-03-7 2.8V DSC1028 Low-Power CMOS Oscillator Nominal Performance Characteristics 2.8V Characteristics Standby Current Supply Current 1 1pF Ta = 25°C 8pF 15pF Standby Current (µA) Supply Current (mA) 16 12 8 4 0 -40°C 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 -40°C 25°C 85°C -40°C 1.5 Fall Time (ns) Rise Time (ns) 85°C 0 0 1 0.5 0 25°C 85°C 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 25°C 25°C 30 150 Jitter (ps) RMS Jitter (ps) 25°C 20 10 100 50 0 0 0 50 100 Frequency (MHz) 150 0 50 100 Frequency (MHz) 150 All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to implied warranties of merchantability or fitness for a particular use. Page 3 MK-Q-B-P-D-031809-03-7 2.8V DSC1028 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 All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to implied warranties of merchantability or fitness for a particular use. Page 4 MK-Q-B-P-D-031809-03-7 2.8V DSC1028 Low-Power CMOS Oscillator Board Layout (recommended) Solder Reflow Profile 20-40 Sec MSL 1 @ 260°C refer to JSTD-020C Ramp-Up Rate (200°C to Peak Temp) 3°C/Sec Max. Preheat Time 150°C to 200°C 60-180 Sec Time maintained above 217°C 60-150 Sec 255-260°C Peak Temperature Time within 5°C of actual Peak 20-40 Sec 6°C/Sec Max. Ramp-Down Rate Time 25°C to Peak Temperature 8 min Max. Se 3C / 217°C 200°C 60-150 Sec S 6C/ ec 3C / Se cM ax . Reflow 25°C 60-180 Sec x. 150°C Ma Temperature (°C) cM ax . 260°C Cool Pre heat Time 8 min max Package Dimensions 7.0 x 5.0 mm Plastic Package External Dimensions 7.0±0.10 [0.276±0.004] #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] #1 #2 5.0±0.10 [0.197±0.004] #2 1.4 [0.055] 0.2 [0.008] #1 0.85±0.05 [0.033±0.002] 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] All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to implied warranties of merchantability or fitness for a particular use. Page 5 MK-Q-B-P-D-031809-03-7 2.8V DSC1028 Low-Power CMOS Oscillator 5.0 x 3.2 mm Plastic Package External Dimensions 2.54 [0.100] 2.54 [0.100] 5±0.10 [0.197±0.004] #4 Recommended Land Pattern #3 2.1 [0.083] #4 #3 1.2 [0.047] 0.2 [0.008] 0.1 [0.004] #2 1.2 [0.047] #1 #2 3.2±0.10 [0.126±0.004] 1.1 [0.043] #1 0.1 [0.004] 1.2 [0.047] 0.9 [0.035] No. 1 2 3 4 0.85±0.05 [0.033±0.002] Pin Terminal Standby# GND Output VDD units: mm [inch] 3.2 x 2.5 mm Plastic Package Recommended Land Pattern External Dimensions 3.2±0.05 [0.126±0.002] #4 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 2.5±0.05 [0.098±0.002] #2 0.9±0.05 [0.035±0.002] #1 0.8±0.1 [0.031±0.004] 0.85±0.05 [0.033±0.002] No .1 2 3 4 Pin Terminal Standby# GND Output VDD 0.2 [0.008] 0.9 [0.035] units: mm [inch] All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to implied warranties of merchantability or fitness for a particular use. Page 6 MK-Q-B-P-D-031809-03-7 2.8V DSC1028 Low-Power CMOS Oscillator 2.5 x 2.0 mm Plastic Package External Dimensions 2.5±0.05 [0.098±0.002] #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 0.65±0.05 [0.026±0.002] #2 2.0±0.05 [0.079±0.002] #1 0.2 [0.008] 0.65 [0.026] 0.65±0.10 [0.026±0.004] No .1 2 3 4 0.85±0.05 [0.033±0.002] Pin Terminal Standby# GND Output VDD units: mm [inch] Ordering Information DSC1028 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 Packing Option T=C: 0o ~ +70o C T=E: -20o ~ +70o C T=I: -40o ~ +85o C S=1: ±50ppm S=2: ±25ppm (4 decimal places) - XXX.XXXX Blank: Tubes T: Tape & Reel Example: DSC1028CE1–123.0000T 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: 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, Inc. Phone: +1 (408) 944-0800 ● ● 2180 Fortune Drive, Fax: +1 (408) 474-1000 San Jose, California 95131 ● Email: [email protected] ● ● USA www.micrel.com All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to implied warranties of merchantability or fitness for a particular use. Page 7 MK-Q-B-P-D-031809-03-7