DSC1104 DSC1124 Low-Jitter Precision HCSL Oscillator General Description Features The DSC1104 & DSC1124 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. DSC1104 has a standby feature allowing it to completely power-down when EN pin is pulled low; whereas for DSC1124, 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 6-pin HCSL quartz crystal oscillators. Low RMS Phase Jitter: <1 ps (typ) 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: 2.3 to 460 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 Supply Range of 2.25 to 3.6 V Standby & Output Enable Function Block Diagram Lead Free & RoHS Compliant LVPECL & LVDS Versions Available Applications Output Enable Modes EN Pin High NC Low DSC1104 Outputs Active Outputs Active Standby DSC1124 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 _____________________________________________________________________________________________________________________________ _________________ DSC1104 | DSC1124 Page 1 MK-Q-B-P-D-110410-04-6 DSC1104 DSC1124 Low-Jitter Precision HCSL 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 4 C I 5 40sec max. V Temp Range E: -20 to 70 I: -40 to 85 L: -40 to 105 - 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 Supply Voltage Condition 1 VDD IDD Frequency Stability Δf Includes frequency variations due to initial tolerance, temp. and power supply voltage Aging Startup Time2 Δf tSU 1 year @25°C T=25°C Input Logic Levels Input logic high Input logic low VIH VIL Output Disable Time3 tDA Output Enable Time tEN Enable Pull-Up Resistor4 Typ. 2.25 EN pin low – outputs are disabled DSC1104 DSC1124 Supply Current Min. 20 Max. Unit 3.6 V 0.095 22 mA ±10 ±25 ±50 ±5 5 0.75xVDD - 0.25xVDD DSC1104 DSC1124 Pull-up resistor exist ppm ppm ms V 5 ns 5 20 ms ns 40 kΩ HCSL Outputs Supply Current IDD Output Enabled, RL=50Ω Output Logic Levels Output logic high Output logic low VOH VOL RL=50Ω Pk to Pk Output Swing Output Transition time Rise Time Fall Time 40 0.725 - Single-Ended 3 42 mA 0.1 V 750 mV 20% to 80% RL=50Ω, CL= 2pF 200 400 ps f0 Single Frequency 2.3 460 MHz Output Duty Cycle SYM Differential 48 52 % Period Jitter JPER Integrated Phase Noise JPH Frequency Notes: 1. 2. 3. 4. tR tF 2.5 200kHz to 20MHz @156.25MHz 100kHz to 20MHz @156.25MHz 12kHz to 20MHz @156.25MHz 0.25 0.37 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. _____________________________________________________________________________________________________________________________ _________________ DSC1104 | DSC1124 Page 2 MK-Q-B-P-D-110410-04-6 DSC1104 DSC1124 Low-Jitter Precision HCSL 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) 50MHz-HCSL 50-mV -30 -40 -50 -60 106MHz-HCSL 2.0 156MHz-HCSL 1.5 212MHz-HCSL 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) Phase jitter (integrated phase noise) Power supply rejection ratio Output Waveform tR Output tF 80% 675mv mV 830 50% Output 20% tEN 1/f o tDA VIH Enable VIL Typical Termination Scheme VDD 0.1uF Rs = 0 Ω f or test 6 2 5 3 4 Rs 100 Ω Rs Rs serves to match the trace impedances. Depending on board layout, the value may range from 0 to 30 ohms. 50 Ω 50 Ω _____________________________________________________________________________________________________________________________ _________________ DSC1104 | DSC1124 Page 3 MK-Q-B-P-D-110410-04-6 DSC1104 DSC1124 Low-Jitter Precision HCSL Oscillator Test Circuit Solder Reflow Profile Se 3C / 217°C 200°C 60-150 Sec S 6C/ ax cM Se 3C / 25°C 60-180 Sec Pre heat 8 min max Reflow x. 150°C Ma . ec Temperature (°C) cM ax . 260°C 20-40 Sec Cool 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. Time _____________________________________________________________________________________________________________________________ _________________ DSC1104 | DSC1124 Page 4 MK-Q-B-P-D-110410-04-6 DSC1104 DSC1124 Low-Jitter Precision HCSL Oscillator Package Dimensions 7.0 x 5.0 mm Plastic Package EXTERNAL DIMENSIONS Units: mm [ inches] RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] Via to Ground Plane 1.4±0.10 [0.055±0.004] 2.54 [0.100] 2.54[0.100] 6 1 2 3 1.8 [0.071] 3 2 2.8 [0.110] 5±0.10 [0.197±0.004] 1 No. 1 2 3 4 5 6 0.85±0.05 Pin Terminal Enable N/C Ground OUT OUTVDD TIE TO GND PAD 6 5 4 1 2 3 2.6 [0.102] 5 1.4 [0.055] 4 4 3.7 [0.146] REF 5 1.1±0.01[0.43±0.004] 7±0.10 [0.276±0.004] 6 Via to Power Trace 1.4 [0.055] 5.0 x 3.2 mm Plastic Package EXTERNAL DIMENSIONS Units: mm [ inches] 1.27 [0.050] 5±0.05 [0.197±0.002] 5 4 4 5 1 2 3 Via to Power Trace 1.27[0.05] 0.64±0.05 6 1.2 [0.047] REF 6 RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] Via to Ground Plane 3 5 4 1 2 3 2 1 0.7±0.1 [0.079±0.002] 3.2±0.05 [0.126±0.002] 0.85±0.05 6 1.2 [0.047] REF No. 1 2 3 4 5 Pin Terminal Enable N/C Ground OUT OUT- 6 VDD 1.1 [ 0.043] 0.64 [0.025] _____________________________________________________________________________________________________________________________ _________________ DSC1104 | DSC1124 Page 5 MK-Q-B-P-D-110410-04-6 DSC1104 DSC1124 Low-Jitter Precision HCSL 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 3.2±0.05 [0.126±0.002] 1.05 [0.041] 0.7±0.1 [0.079±0.002] 6 5 4 4 5 0.375 Via to Ground Plane 6 0.9 [0.035] REF 0.9 [0.035] REF 6 5 4 1 2 3 1 [ 0.039] 1 2 3 3 2.5±0.05 [0.098±0.002] 2 1 0.1[0.004] REF 0.9±0.05 [0.035±0.002] 0.5 [0.197] 0.9 [0.035] 0.5±0.05 [0.198±0.002] No. 1 2 3 4 5 6 0.85±0.05 Pin Terminal Enable N/C Ground OUT OUTVDD 2.5 x 2.0 mm Plastic Package EXTERNAL DIMENSIONS Units: mm [ inches] 2.5±0.05 [0.098±0.002] RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] 0.7±0.1 [0.079±0.002] 0.825 [0.032] 6 5 4 4 5 Via to Power Trace 6 0.375 Via to Ground Plane 0.6 REF 0.535 REF 0.7 REF 1 2 3 0.7±0.1 [0.079±0.002] 3 2 1 0.765±0.1 6 5 4 1 2 3 2.0±0.05 [0.079±0.002] 0.65±0.05 [0.026±0.002] 0.85±0.05 0.25±0.05 [0.099±0.002] No. 1 2 3 4 5 Pin Terminal Enable N/C Ground OUT OUT- 6 VDD 0.85 0.65±0.05 [0.026±0.002] 0.25±0.05 [0.099±0.002] _____________________________________________________________________________________________________________________________ _________________ DSC1104 | DSC1124 Page 6 MK-Q-B-P-D-110410-04-6 DSC1104 DSC1124 Low-Jitter Precision HCSL Oscillator 7.0 x 5.0 mm Plastic Package EXTERNAL DIMENSIONS RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] Units: mm [ inches] Via to Ground Plane 1.4±0.10 [0.055±0.004] 2.54 [0.100] 2.54[0.100] 6 1.1±0.01[0.43±0.004] 5 1 2 3 3 2 1 6 5 4 1 2 3 2.6 [0.102] 4 4 3.7 [0.146] REF 5 1.4 [0.055] 7±0.10 [0.276±0.004] 6 Via to Power Trace 5±0.10 [0.197±0.004] 0.85±0.05 No. 1 2 3 4 5 6 Pin Terminal Enable N/C Ground OUT OUTVDD 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: [email protected] ● ● USA www.discera.com _____________________________________________________________________________________________________________________________ _________________ DSC1104 | DSC1124 Page 7 MK-Q-B-P-D-110410-04-6