DSC1103 DSC1123 Low-Jitter Precision LVDS Oscillator General Description Features The DSC1103 & DSC1123 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. DSC1103 has a standby feature allowing it to completely power-down when EN pin is pulled low; whereas for DSC1123, 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 LVDS 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 & HCSL Versions Available Applications Output Enable Modes EN Pin High NC Low DSC1103 Outputs Active Outputs Active Standby DSC1123 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 _____________________________________________________________________________________________________________________________ _________________ DSC1103 | DSC1123 Page 1 MK-Q-B-P-D-110410-03-6 DSC1103 DSC1123 Low-Jitter Precision LVDS 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 3 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 Condition Supply Voltage1 VDD Supply Current IDD EN pin low – outputs are disabled DSC1103 DSC1123 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 Min. Typ. 2.25 20 Max. Unit 3.6 V 0.095 22 mA ±10 ±25 ±50 ±5 5 0.75xVDD - DSC1103 DSC1123 Pull-up resistor exist ppm ppm ms 0.25xVDD V 5 ns 5 20 ms ns 40 kΩ LVDS Outputs Supply Current IDD Output Enabled, RL=100Ω Output offset Voltage VOS R=100Ω Differential Delta Offset Voltage ∆VOS Pk to Pk Output Swing Output Transition time Rise Time Fall Time VPP 3 Frequency tR tF 29 1.125 32 mA 1.4 V 50 mV Single-Ended 350 mV 20% to 80% RL=50Ω, CL= 2pF 200 ps f0 Single Frequency 2.3 460 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 0.28 0.4 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. _____________________________________________________________________________________________________________________________ _________________ DSC1103 | DSC1123 Page 2 MK-Q-B-P-D-110410-03-6 DSC1103 DSC1123 Low-Jitter Precision LVDS 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-LVDS 50-mV -30 -40 -50 -60 212MHz-LVDS 2.0 320MHz-LVDS 1.5 410MHz-LVDS 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% 350mv mV 830 50% Output 20% tEN 1/f o tDA VIH Enable VIL Typical Termination Scheme VDD 0.1uF 6 2 5 3 4 100 Ω 100 Ω _____________________________________________________________________________________________________________________________ _________________ DSC1103 | DSC1123 Page 3 MK-Q-B-P-D-110410-03-6 DSC1103 DSC1123 Low-Jitter Precision LVDS Oscillator Test Circuit Solder Reflow Profile 20-40 Sec 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 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 _____________________________________________________________________________________________________________________________ _________________ DSC1103 | DSC1123 Page 4 MK-Q-B-P-D-110410-03-6 DSC1103 DSC1123 Low-Jitter Precision LVDS 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] 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 2.54[0.100] 3.7 [0.146] REF 5 4 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] _____________________________________________________________________________________________________________________________ _________________ DSC1103 | DSC1123 Page 5 MK-Q-B-P-D-110410-03-6 DSC1103 DSC1123 Low-Jitter Precision LVDS 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] _____________________________________________________________________________________________________________________________ _________________ DSC1103 | DSC1123 Page 6 MK-Q-B-P-D-110410-03-6 DSC1103 DSC1123 Low-Jitter Precision LVDS 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] No. 1 2 3 4 5 6 0.85±0.05 Pin Terminal Enable N/C Ground OUT OUTVDD 1.4 [0.055] 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 Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. 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 _____________________________________________________________________________________________________________________________ _________________ DSC1103 | DSC1123 Page 7 MK-Q-B-P-D-110410-03-6