DSC8102 DSC8122 Programmable Low-Jitter Precision LVPECL Oscillator General Description Features Low RMS Phase Jitter: <1 ps (typ) The DSC8102 & DSC8122 series of high performance field-programmable oscillators High Stability: 10, 25, 50 ppm utilizes a proven silicon MEMS technology to Wide Temperature Range provide excellent jitter and stability over a wide range of supply voltages and o Industrial: -40 to 85 C temperatures. Using the TIMEFLASH o Ext. commercial: -20 to 70 C programmer, the end user can easily High Supply Noise Rejection: -50 dBc program the oscillators frequency in the field for immediate testing or use in advance Short Lead Time: 2 Weeks prototype development or production. Wide Freq. Range: 10 to 460 MHz DSC8102 has a standby feature allowing it to Small Industry Standard Footprints completely power-down when EN pin is o 2.5x2.0, 3.2x2.5, 5.0x3.2, & 7.0x5.0 mm pulled low whereas for DSC8122, only the Excellent Shock & Vibration Immunity outputs are disabled when EN is low. Both o Qualified to MIL-STD-883 oscillators are available in industry standard 2 packages, including the small 3.2x2.5 mm , High Reliability and are drop-in replacement for standard o 20x better MTF than quartz oscillators 6-pin LVPECL 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 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 Output Enable Modes HD/SD/SDI Video & Surveillance EN Pin DSC8102 DSC8122 PCI Express: Gen 1 & Gen 2 High Outputs Active Outputs Active DisplayPort NC Outputs Active Outputs Active Low Standby Outputs Disabled 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-110410-02-2 Programmable Low-Jitter Precision LVPECL Oscillator DSC8102 DSC8122 Absolute Maximum Ratings Ordering Code Item Min Max Unit Condition Supply Voltage -0.3 +4.0 V Enable Modes Temp Range Packing 0: Enable/Standby E: -20 to 70 T: Tape & Reel Input Voltage -0.3 V +0.3 V DD 2: Enable/Disable I: -40 to 85 : Tube Junction Temp - +150 C Storage Temp -55 +150 C DSC81 0 2 C I 5 T - Soldering Temp - +260 C 40sec max. Package ESD - V A: 7.0x5.0mm Stability HBM 4000 B: 5.0x3.2mm 1: 50ppm C: 3.2x2.5mm 2: 25ppm MM 400 D: 2.5x2.0 mm 5: 10ppm CDM 1500 Note: 1000+ years of data retention on internal memory Specifications Parameter Condition Min. Typ. Max. Unit 1 Supply Voltage V 2.25 3.6 V DD EN pin low outputs are disabled Supply Current I DSC8102 0.095 mA DD DSC8122 20 22 Includes frequency variations due 10 Frequency Stability f to initial tolerance, temp. and 25 ppm power supply voltage 50 Aging f 1 year 25C 5 ppm 2 Startup Time t T=25C 5 ms SU Input Logic Levels Input logic high V 0.75xV - V IH DD Input logic low V - 0.25xV IL DD 3 Output Disable Time t 5 ns DA DSC8102 5 ms Output Enable Time t EN DSC8122 20 ns 4 Enable Pull-Up Resistor Pull-up resistor exist 40 k LVPECL Outputs Supply Current I Output Enabled, R =50 56.5 58 mA DD L Output Logic Levels Output logic high V R =50 V -1.08 - V OH L DD Output logic low V - V -1.55 OL DD Pk to Pk Output Swing Single-Ended 800 mV 3 Output Transition time 20% to 80% Rise Time t 250 ps R R =50, C = 0pF L L Fall Time t F Frequency f Single Frequency 10 460 MHz 0 Output Duty Cycle SYM Differential 48 52 % Period Jitter J 2.5 ps PER RMS 200kHz to 20MHz 156.25MHz 0.25 Integrated Phase Noise J 100kHz to 20MHz 156.25MHz 0.38 ps PH RMS 12kHz to 20MHz 156.25MHz 1.7 2 Notes: 1. Pin 6 V should be filtered with 0.1uf capacitor. DD 2. t is time to 100ppm of output frequency after V is applied and outputs are enabled. su DD 3. Output Waveform and Test Circuit figures below define the parameters. 4. Output is enabled if pad is floated or not connected. 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-110410-02-2