DSC1101 DSC1121 Low-Jitter Precision CMOS Oscillator General Description Features The DSC1101 & DSC1121 series of high performance oscillators utilizes a proven silicon MEMS technology to provide excellent jitter and stability over a wide range of supply voltages and temperatures. By eliminating the need for quartz or SAW technology, MEMS oscillators significantly enhance reliability and accelerate product development, while meeting stringent clock performance criteria for a variety of communications, storage, and networking applications. DSC1101 has a standby feature allowing it to completely power-down when EN pin is pulled low; whereas for DSC1121, only the outputs are disabled when EN is low. Both oscillators are available in industry standard packages, including the small 3.2x2.5 mm2, and are "drop-in" replacements for standard 4-pin CMOS quartz crystal oscillators. Low RMS Phase Jitter: <1 ps (typ) High Stability: 10, 25, 50 ppm Wide Temperature Range o Automotive: -55 to 125 C o Ext. Industrial: -40 to 105 C o Industrial: -40 to 85 C o Ext. commercial: -20 to 70 C High Supply Noise Rejection: -50 dBc Short Lead Time: 2 Weeks Wide Freq. Range: 2.3 to 170 MHz Small Industry Standard Footprints o 2.5x2.0, 3.2x2.5, 5.0x3.2, & 7.0x5.0 mm Excellent Shock & Vibration Immunity o Qualified to MIL-STD-883 High Reliability o 20x better MTF than quartz oscillators Low Current Consumption Block Diagram Supply Range of 2.25 to 3.6 V Standby & Output Enable Function Lead Free & RoHS Compliant Applications Output Enable Modes EN Pin High NC Low DSC1101 Output Active Output Active Standby DSC1121 Output Active Output Active Output Disabled Storage Area Networks o SATA, SAS, Fibre Channel Passive Optical Networks o EPON, 10G-EPON, GPON, 10G-PON Ethernet o 1G, 10GBASE-T/KR/LR/SR, and FCoE HD/SD/SDI Video & Surveillance PCI Express DisplayPort _____________________________________________________________________________________________________________________________ _________________ DSC1101 | DSC1121 Page 1 MK-Q-B-P-D-110410-01-6 DSC1101 DSC1121 Low-Jitter Precision CMOS Oscillator Absolute Maximum Ratings Ordering Code Item Min Max Unit Supply Voltage -0.3 +4.0 V Input Voltage -0.3 VDD+0.3 V Junction Temp - +150 C Storage Temp -55 +150 C Soldering Temp - +260 C ESD HBM MM CDM - Condition Enable Modes 0: Enable/Standby 2: Enable/Disable DSC11 0 1 C I 5 40sec max. V Temp Range E: -20 to 70 I: -40 to 85 L: -40 to 105 M: -55 to 125 - Package A: 7.0x5.0mm B: 5.0x3.2mm C: 3.2x2.5mm D: 2.5x2.0mm N: 7.0x5.0mm (no center pad) 4000 400 1500 Packing T: Tape & Reel : Tube 125.0000 Stability 1: 50ppm 2: 25ppm 5: 10ppm T Freq (MHz) 125.0000 Note: 1000+ years of data retention on internal memory Specifications Parameter Condition Supply Voltage1 VDD Supply Current IDD EN pin low - output is disabled DSC1101 DSC1121 f Includes frequency variations due to initial tolerance, temp. and power supply voltage f tSU 1 year @25C T=25C Frequency Stability Ext Comm. & Ind. only All temp ranges All temp ranges Aging Startup Time2 Input Logic Levels Input logic high Input logic low VIH VIL Output Disable Time3 tDA Output Enable Time tEN Enable Pull-Up Resistor4 Min. Typ. 2.25 20 Max. Unit 3.6 V 0.095 22 mA 10 25 50 5 5 0.75xVDD - 0.25xVDD DSC1101 DSC1121 Pull-up resistor exist ppm ppm ms V 5 ns 5 20 ms ns 40 k CMOS Output Supply Current4 Output Logic Levels Output logic high Output logic low Output Transition time3 Rise Time Fall Time Frequency Output Duty Cycle IDD VOH VOL tR tF f0 I=6mA JPER Integrated Phase Noise JPH 31 0.9xVDD - 20% to 80% CL=15pF All temp range except Auto Auto temp range SYM Period Jitter 1. 2. 3. 4. output is enabled CL=15pF, F0=125 MHz 1.1 1.3 2.3 45 35 mA 0.1xVDD V 2 2 170 100 ns 55 Fout=125MHz 3 200kHz to 20MHz @ 125MHz 100kHz to 20MHz @ 125MHz 12kHz to 20MHz @ 125MHz 0.3 0.38 1.7 MHz % psRMS 2 psRMS Pin 6 VDD should be filtered with 0.1uf capacitor. tsu is time to 100PPM of output frequency after VDD is applied and outputs are enabled. Output Waveform and Test Circuit figures below define the parameters. Output is enabled if pad is floated or not connected. _____________________________________________________________________________________________________________________________ _________________ DSC1101 | DSC1121 Page 2 MK-Q-B-P-D-110410-01-6 DSC1101 DSC1121 Low-Jitter Precision CMOS Oscillator Nominal Performance Parameters (Unless specified otherwise: T=25 C, VDD=3.3 V) 0 2.5 Rejection (dBc) 25MHz-CMOS Phase Jitter (ps RMS) 50-mV -10 50MHz-CMOS 2.0 106MHz-CMOS 1.5 125MHz-CMOS 1.0 100-mV -20 -30 -40 -50 -60 -70 0.5 -80 0.1 0.0 0 200 400 600 800 1 10 100 1000 10000 Supply Noise Frequency (kHz) 1000 Power supply rejection ratio Low-end of integration BW: x kHz to 20 MHz Phase jitter (integrated phase noise) Output Waveform tR tF VOH Output VOL tEN 1/fo tDA VIH Enable VIL Typical Termination Scheme VDD 0.1uF 6 2 5 3 4 CL CMOS load capacitance _____________________________________________________________________________________________________________________________ _________________ DSC1101 | DSC1121 Page 3 MK-Q-B-P-D-110410-01-6 DSC1101 DSC1121 Low-Jitter Precision CMOS Oscillator Test Circuit IDD VDD 0.1uF 4 6 5 3 4 1 1 2 32 15pF VDA Board Layout (recommended) Solder Reflow Profile . 3C /Se cM ax 20-40 Sec 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) 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 _____________________________________________________________________________________________________________________________ _________________ DSC1101 | DSC1121 Page 4 MK-Q-B-P-D-110410-01-6 DSC1101 DSC1121 Low-Jitter Precision CMOS Oscillator Package Dimensions 7.0 x 5.0 mm Plastic Package EXTERNAL DIMENSIONS RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] Units: mm [ inches] Via to Ground Plane 1.40.10 [0.0550.004] 2.54 [0.100] 6 1 2 3 1.8 [0.071] 3 2 2.8 [0.110] 50.10 [0.1970.004] 0.850.05 Pin Terminal Enable N/C Ground OUT N/C VDD TIE TO GND PAD 3 1 1 No. 1 2 3 4 5 6 4 6 2.6 [0.102] 5 1.4 [0.055] 4 5.08 [0.100] 3.7 [0.146] REF 5 4 1.10.01[0.430.004] 70.10 [0.2760.004] 6 Via to Power Trace 1.4 [0.055] 5.0 x 3.2 mm Plastic Package EXTERNAL DIMENSIONS Units: mm [ inches] 4 4 5 6 1.2 [0.047] REF 5 1 2 3 Via to Power Trace 0.640.05 1.27 [0.050] 50.05 [0.1970.002] 6 RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] Via to Ground Plane 6 4 1 3 1.2 [0.047] REF 3 2 1 0.70.1 [0.0790.002] 3.20.05 [0.1260.002] 0.850.05 2.54 [0.100] No. 1 2 3 4 5 Pin Terminal Enable N/C Ground OUT N/C 6 VDD 1.1 [ 0.043] 0.64 [0.025] _____________________________________________________________________________________________________________________________ _________________ DSC1101 | DSC1121 Page 5 MK-Q-B-P-D-110410-01-6 DSC1101 DSC1121 Low-Jitter Precision CMOS Oscillator 3.2 x 2.5 mm Plastic Package EXTERNAL DIMENSIONS Units: mm [ inches] RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] Via to Power Trace 3.20.05 [0.1260.002] 1.05 [0.041] 6 5 4 4 5 2.1[0.083] Via to Ground Plane 0.70.1 [0.0790.002] 6 0.9 [0.035] REF 0.9 [0.035] REF 6 4 1 3 1 [ 0.039] 1 2 3 3 2.50.05 [0.0980.002] 2 1 0.1[0.004] REF 0.90.05 [0.0350.002] 0.9 [0.035] 0.50.05 [0.1980.002] No. 1 2 3 4 5 6 0.850.05 Pin Terminal Enable N/C Ground OUT N/C VDD 2.5 x 2.0 mm Plastic Package EXTERNAL DIMENSIONS Units: mm [ inches] 2.50.05 [0.0980.002] RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] 0.70.1 [0.0790.002] 0.825 [0.032] 6 5 4 4 5 Via to Power Trace 6 1.65[0.064] Via to Ground Plane 0.6 REF 0.535 REF 0.7 REF 1 2 3 0.70.1 [0.0790.002] 3 2 1 0.7650.1 6 5 4 1 2 3 2.00.05 [0.0790.002] 0.650.05 [0.0260.002] 0.850.05 0.250.05 [0.0990.002] No. 1 2 3 4 5 Pin Terminal Enable N/C Ground OUT N/C 6 VDD 0.85 0.650.05 [0.0260.002] _____________________________________________________________________________________________________________________________ _________________ DSC1101 | DSC1121 Page 6 MK-Q-B-P-D-110410-01-6 DSC1101 DSC1121 Low-Jitter Precision CMOS Oscillator 7.0 x 5.0 mm Plastic Package (no center pad) EXTERNAL DIMENSIONS Units: mm [ inches] RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] Via to Ground Plane 1.40.10 [0.0550.004] 2.54 [0.100] 6 1.10.01[0.430.004] 5 1 2 3 3 2 1 4 6 2.6 [0.102] 4 4 3.7 [0.146] REF 5 5.08 [0.100] 3 1 1.4 [0.055] 70.10 [0.2760.004] 6 Via to Power Trace 50.10 [0.1970.004] 0.850.05 No. 1 2 3 4 5 6 Pin Terminal Enable N/C Ground OUT N/C VDD 1.4 [0.055] 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 San Jose, California 95131 Fax: +1 (408) 432-8609 Email: sales@discera.com USA www.discera.com _____________________________________________________________________________________________________________________________ _________________ DSC1101 | DSC1121 Page 7 MK-Q-B-P-D-110410-01-6 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Micrel: DSC1121CM1-010.7000T DSC1121CI2-020.0000T DSC1121CI2-125.0000T DSC1101CI5-048.0000 DSC1121CI2060.0000T DSC1121CI2-074.2500T DSC1121CI5-040.0000 DSC1121CI5-050.0000T DSC1121DL2-032.0000 DSC1121CI2-024.0000T DSC1121CI2-040.0000 DSC1101BE2-025.0000 DSC1121CI2-062.5000 DSC1121CI2150.0000 DSC1121CI2-150.0000T DSC1121CM1-025.0000T DSC1101DI5-026.0000T DSC1121AI2-029.4912T DSC1121BI1-026.0000 DSC1121CE1-016.0000 DSC1121CE2-066.6600T DSC1121AE1-040.0000T DSC1121AI5125.0032 DSC1121AI5-125.0032T DSC1121AM1-025.0000T DSC1121CI2-025.0000 DSC1121CI2-025.0012T DSC1121CM2-027.0000 DSC1121AE2-156.2500 DSC1121AM1-033.0000 DSC1121AM1-050.0000T DSC1121BI2156.2539T DSC1121AE1-024.5760T DSC1121DI2-010.0000T DSC1121DI2-065.5360T DSC1121CI2-024.5760T DSC1121BL1-125.0000 DSC1121CE2-066.6600 DSC1121CI1-125.0000T DSC1121BI2-120.0000T DSC1121CE2025.0000T DSC1121CI2-012.2880 DSC1121CI2-013.0000T DSC1121CI2-066.0000 DSC1121CL2-027.0000 DSC1121AE2-125.0000T DSC1121AI1-155.5200T DSC1121AI2-050.0000T DSC1121AI5-050.0000 DSC1121BI2010.0000T DSC1121BI2-025.0000T DSC1121AE1-125.0000T DSC1121AE1-016.0000T DSC1121BI2-100.0000 DSC1121BI5-150.0000 DSC1121BM2-120.0000 DSC1121AE2-025.0000T DSC1101AE1-050.0000 DSC1101CL2010.0000 DSC1101CM2-062.2080 DSC1101DM2-125.0000 DSC1121AE1-025.0000T DSC1121AE1-075.0000 DSC1121AE1-075.0000T DSC1121AE2-075.0000T DSC1121AI1-025.0000 DSC1121CL2-027.0000T DSC1121DL1016.0000T DSC1121DL2-127.0000T DSC1121AI2-003.6864T DSC1121AI2-025.0000T DSC1121AI2-125.0000T DSC1121AI2-131.0750T DSC1101CI5-020.0000T DSC1101DI5-066.0000T DSC1121CI5-014.7456T DSC1121CL2040.0000 DSC1121DI2-125.0000T DSC1101CI2-066.0000 DSC1101CI5-024.7500 DSC1101DI5-060.0000T DSC1121CE1-075.0000T DSC1121CE2-026.0000T DSC1121CI2-012.2880T DSC1121CI2-050.0000 DSC1121CI2050.0000T DSC1121CI2-133.0000 DSC1121CI2-025.0000T DSC1121CL2-040.0000T DSC1121CM1-048.0000T DSC1121CM1-125.0000T DSC1121DL2-024.7500 DSC1121BI2-150.0000T DSC1121BI2-125.0037T DSC1121BI2200.0000T DSC1121BI5-012.6500 DSC1121BM1-060.0000T DSC1121CE1-025.0012T DSC1121CE2-025.0000 DSC1121CM1-016.0000T