DSC8102 DSC8122 Programmable Low-Jitter Precision LVPECL Oscillator General Description Features The DSC8102 & DSC8122 series of high performance field-programmable oscillators utilizes a proven silicon MEMS technology to provide excellent jitter and stability over a wide range of supply voltages and temperatures. Using the TIMEFLASH programmer, the end user can easily program the oscillators' frequency in the field for immediate testing or use in advance prototype development or production. Low RMS Phase Jitter: <1 ps (typ) DSC8102 has a standby feature allowing it to completely power-down when EN pin is pulled low; whereas for DSC8122, 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" replacement for standard 6-pin LVPECL quartz oscillators. Small Industry Standard Footprints High Stability: 10, 25, 50 ppm Wide Temperature Range 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: 10 to 460 MHz 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 Supply Range of 2.25 to 3.6 V Standby & Output Enable Function Block Diagram Lead Free & RoHS Compliant LVDS & HCSL Versions Available Applications Output Enable Modes EN Pin High NC Low DSC8102 Outputs Active Outputs Active Standby DSC8122 Outputs Active Outputs Active Outputs 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: Gen 1 & Gen 2 DisplayPort _____________________________________________________________________________________________________________________________ ________________ DSC8102 | DSC8122 Page 1 MK-Q-B-P-D-030411-02-2 DSC8102 DSC8122 Programmable Low-Jitter Precision LVPECL Oscillator Absolute Maximum Ratings 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 - Ordering Code Condition Enable Modes 0: Enable/Standby 2: Enable/Disable Temp Range E: -20 to 70 I: -40 to 85 L: -40 to 105 M: -55 to 125 DSC81 0 2 C I 5 40sec max. V 4000 400 1500 - Package A: 7.0x5.0mm B: 5.0x3.2mm C: 3.2x2.5mm D: 2.5x2.0mm N: 7.0x5.0mm (no center pad) 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 Supply Voltage 1 Supply Current Condition VDD IDD Frequency Stability f Aging Startup Time2 f tSU 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 EN pin low - outputs are disabled DSC8102 DSC8122 Includes frequency variations due to initial tolerance, temp. and power supply voltage 1 year @25C T=25C 20 0.75xVDD - Unit 3.6 V 0.095 22 10 25 50 5 5 mA 0.25xVDD DSC8102 DSC8122 Pull-up resistor exist Max. ppm ppm ms V 5 ns 5 20 ms ns 40 k LVPECL Outputs Supply Current IDD Output Enabled, RL=50 Output Logic Levels Output logic high Output logic low VOH VOL RL=50 Pk to Pk Output Swing 56.5 VDD-1.08 - 58 mA VDD-1.55 V Single-Ended 800 mV 20% to 80% RL=50, CL= 0pF 250 ps Output Transition time3 Rise Time Fall Time tR tF Frequency f0 Single Frequency 10 460 MHz Output Duty Cycle SYM Differential 48 52 % Period Jitter JPER Integrated Phase Noise JPH Notes: 1. 2. 3. 4. 2.5 200kHz to 20MHz @156.25MHz 100kHz to 20MHz @156.25MHz 12kHz to 20MHz @156.25MHz 0.25 0.38 1.7 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. _____________________________________________________________________________________________________________________________ ________________ DSC8102 | DSC8122 Page 2 MK-Q-B-P-D-030411-02-2 DSC8102 DSC8122 Programmable Low-Jitter Precision LVPECL Oscillator Nominal Performance Parameters (Unless specified otherwise: T=25 C, VDD=3.3 V) 2.5 0 -10 100-mV -20 Phase Jitter (ps RMS) Rejection (dBc) 156MHz-LVPECL 50-mV -30 -40 -50 -60 212MHz-LVPECL 2.0 320MHz-LVPECL 1.5 410MHz-LVPECL 1.0 0.5 -70 0.0 -80 0.1 1 10 100 1000 0 10000 200 400 600 800 1000 Low-end of integration BW: x kHz to 20 MHz Supply Noise Frequency (kHz) Power supply rejection ratio Phase jitter (integrated phase noise) Output Waveform tR Output tF 80% 830 mv 50% Output 20% tEN 1/f o tDA VIH Enable VIL Typical Termination Scheme VDD VDD 0.1uF 130 130 6 2 5 3 4 100 82 82 _____________________________________________________________________________________________________________________________ ________________ DSC8102 | DSC8122 Page 3 MK-Q-B-P-D-030411-02-2 DSC8102 DSC8122 Programmable Low-Jitter Precision LVPECL Oscillator Test Circuit LVPECL IDD VDD LVPECL 0.1uF 6 5 4 1 2 3 VDA 50 50 0.01uF VTT VTT= VDD- 2.0V 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 _____________________________________________________________________________________________________________________________ ________________ DSC8102 | DSC8122 Page 4 MK-Q-B-P-D-030411-02-2 DSC8102 DSC8122 Programmable Low-Jitter Precision LVPECL Oscillator PackageExternal Dimensions Dimensions units: mm[inch] 7.00 5 2.54 4 4 7.0 x 5.0 1.40 mm Plastic Package 5 6 1.10 5.00 2 3 3.70 1.80 3 2 1 2.80 0.85 No. 1 2 3 4 5 6 Pin terminal Enable nc GND Output Output VDD 5.0 x 3.2 mm Plastic Package _____________________________________________________________________________________________________________________________ ________________ DSC8102 | DSC8122 Page 5 MK-Q-B-P-D-030411-02-2 DSC8102 DSC8122 Programmable Low-Jitter Precision LVPECL Oscillator 3.2 x 2.5 mm Plastic Package 2.5 x 2.0 mm Plastic Package 2.50.05 [0.0980.002] 0.825 [ .032 ] 0.9 [.035] REF 0.70.10 [0.0280.004] 2.00.05 [0.0790.002] 0.1 [.004] REF 0.375 [0.015] 0.650.05 [0.0260.002] 0.250.05 [0.0990.002] 0.85 [0.033] 0.70 [0.028] 0.65 [0.026] 0.25 [0.0098] _____________________________________________________________________________________________________________________________ ________________ DSC8102 | DSC8122 Page 6 MK-Q-B-P-D-030411-02-2 DSC8102 DSC8122 Programmable Low-Jitter Precision LVPECL Oscillator 7.0 x 5.0 mm Plastic Package 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 _____________________________________________________________________________________________________________________________ ________________ DSC8102 | DSC8122 Page 7 MK-Q-B-P-D-030411-02-2 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Micrel: DSC8102AI2 DSC8102CI2 DSC8102DI5 DSC8122AI5T DSC8122DI2 DSC8122CI5T DSC8102AI5 DSC8102CI5 DSC8102BI5 DSC8122CI2 DSC8102BI2 DSC8122AI2 DSC8102AI2T DSC8122BI2