VC-711 Differential (LVPECL, LVDS) Crystal Oscillator
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- Ilene Beasley
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1 C-7 Differential (LPECL, LDS) Crystal Oscillator C-7 Description ectron s C-7 Crystal Oscillator is a quartz stabilized, differential output oscillator, operating off either a 2.5 or 3.3 volt power supply in a hermetically sealed 7.0 x 5.0mm ceramic package. Features Ultra Low Jitter Performance, 3rd OT or Fundamental Crystal Design 0MHz -70MHz Output Frequencies Excellent Power Supply Rejection Ratio Enable/Disable 3.3 or 2.5 operation Extended Operating Temperature Range (-40 to 05 C) Option Hermetically Sealed 7.0 x 5.0mm Ceramic Package Product is compliant to RoHS directive and fully compatible with lead free assembly Applications Ethernet, GbE, Synchronous Ethernet Fiber Channel Enterprise Servers Clock source for ADC s, DAC s Test and Measurement GPON Block Diagram DD Complementary Output Output oltage Regulator Crystal Oscillator E/D or E/D or GND ectron International 267 Lowell Road, Suite 02, Hudson, NH 0305 Tel: -88-ECTRON- Page
2 Table. Electrical Performance, LPECL Option Performance Specifications Parameter Symbol Min Typical Maximum Units Supply oltage (Ordering Option) DD Current Consumption, I DD 69 6 Frequency Nominal Frequency (Ordering Option) f N 0 70 MHz Stability 2 (Ordering Option) ±20, ±25, ±50 or ±00 ppm Output Logic Levels 3 Output Logic High Output Logic Low Outputs OH DD OL DD -.80 DD DD Output Rise and Fall Time 3,4 t R /t F 450 ps Load 50 ohms into DD -2.0 Duty Cycle 5 DC % Phase Noise, 3.3, 56.25MHz 6 0Hz 00Hz khz 0kHz 00kHz MHz 20MHz ф N Jitter 6, 56.25MHz 2kHz -20MHz ф J fs Outputs Enabled 7 Outputs Disabled Enable/Disable ma dbc/hz IH 0.7* DD IL 0.3* DD Disable Time t D 200 ns Enable/Disable Leakage Current ±200 ua Start-Up Time t SU 0 ms Operating Temp. (Ordering Option) T OP -0/70 or -40/85 or -40/05 C. The C-7 power supply pin should be filtered, eg, a 0uf, 0.uf and 0.0uf capacitor. 2. Includes calibration tolerance, operating temperature, supply voltage variations, aging and IR reflow. 3. Figure defines the test circuit and Figure 2 defines these parameters. 4. Output rise and fall time will be 600ps (max) for -40/05 C operating temperature range. 5. Duty Cycle is defined as the On/Time Period. 6. Measured using an Agilent E5052 Signal Source Analyzer at 25 C. 7. Outputs will be Enabled if Enable/Disable is left open. DD -.3 t R t F AMP *0.8 Cross Point AMP *0.2 AMP On Time Period Figure. Figure 2. ectron International 267 Lowell Road, Suite 02, Hudson, NH 0305 Tel: -88-ECTRON- Page2
3 Performance Specifications Table 2. Electrical Performance, LDS Option Parameter Symbol Min Typical Maximum Units Supply Supply oltage (Ordering Option) DD Current Consumption, The C-7 power supply pin should be filtered, eg, a 0uf, 0.uf and 0.0uf capacitor. 2. Includes calibration tolerance, operating temperature, supply voltage variations, aging and IR reflow. 3. Figure 2 defines these parameters and Figure 3 defines the test circuit. 4. Output rise and fall time will be 600ps (max) for -40/05 C operating temperature range. 5. Duty Cycle is defined as the On/Time Period. 6. Measured using an Agilent E5052 Signal Source Analyzer at 25 C 7. Outputs will be Enabled if Enable/Disable is left open I DD Frequency Nominal Frequency (Ordering Option) f N 0 70 MHz Stability 2 (Ordering Option) ±20, ±25, ±50 or ±00 ppm Output Logic Levels 3 Output Logic High Output Logic Low Outputs OH OL ma.6 Output Amplitude m Differential Output Error 50 m Offset oltage Offset oltage Error 50 m Output Leakage Current, Outputs Disabled 0 ua Output Rise and Fall Time 3,4 t R /t F 450 ps Load 00 ohms differential Duty Cycle 5 DC % Phase Noise, 3.3, 56.25MHz 6 0Hz 00Hz khz 0kHz 00kHz MHz 20MHz ф N Jitter 6, 56.25MHz 2kHz - 20MHz ф J fs Outputs Enabled 7 Outputs Disabled Enable/Disable dbc/hz IH 0.7* DD IL 0.3* DD Disable Time t D 200 ns Enable/Disable Leakage Current I E/D ±200 ua Start-Up Time t SU 0 ms Operating Temp. (Ordering Option) T OP -0/70 or -40/85 or -40/05 C 0.0 uf Out Out DC 2 3 Figure 3. ectron International 267 Lowell Road, Suite 02, Hudson, NH 0305 Tel: -88-ECTRON- Page3
4 Package and Pinout Table 3. Pinout Pin # Symbol Function E/D or Enable/Disable or No Connection 2 E/D or Enable Disable or No Connection 3 GND Electrical and Lid Ground 4 f O Output Frequency 5 Cf O Complementary Output Frequency 6 DD Supply oltage 7.0± C-7 xxxmxx YYWW Z 5.0± ± Bottom iew dimensions are in mm Figure 4. Pad Layout Figure 5. Package Outline Drawing Marking Information C-7 - Product Type xxxmxx - Frequency (56M25) YY - Year of Manufacture WW - Week of the Year Z - Manufacturing Location LPECL Application Diagrams DD uF 0.0uF 0.0uF Figure 6. Single Resistor Termination Scheme Resistor values are typically 40 ohms for 3.3 operation and 84 ohms for 2.5 operation. Figure 7. Pull-Up Pull Down Termination Resistor values shown are typical for 3.3 opertaion. For 2.5 operation, the resistor to ground is 62 ohms and the resistor to supply is 250 ohms ectron International 267 Lowell Road, Suite 02, Hudson, NH 0305 Tel: -88-ECTRON- Page4
5 The C-7 incorporates a standard PECL output scheme, which are un-terminated FET drains. There are numerous application notes on terminating and interfacing PECL logic and the two most common methods are a single resistor to ground, Figure 6, or for best 50 ohm matching a pull-up/pull-down scheme as shown in Figure 7 should be used. AC coupling capacitors are optional, depending on the application and the input logic requirements of the next stage. One of the most important considerations is terminating the Output and Complementary Outputs equally. An unused output should not be left un-terminated, and if it one of the two outputs is left open it will result in excessive jitter on both. PC board layout must take this and 50 ohm impedance matching into account. Load matching and power supply noise are the main contributors to jitter related problems. LDS Application Diagrams LDS Driver 00 LDS Receiver LDS Driver 00 Receiver Figure 6. LDS to LDS Connection, Internal 00ohm Resistor Some LDS structures have an internal 00 ohm resistor on the input and do not need additional components. AC blocking capacitors can be used if the DC levels are incompatible. Figure 7. LDS to LDS Connection Some input structures may not have an internal 00 ohm resistor on the input and will need an external 00ohm resistor for impedance matching. Also, the input may have an internal DC bias which may not be compatible with LDS levels, AC blocking capacitors can be used. One of the most important considerations is terminating the Output and Complementary Outputs equally. An unused output should not be left un-terminated, and if it one of the two outputs is left open it will result in excessive jitter on both. PC board layout must take this and 50 ohm impedance matching into account. Load matching and power supply noise are the main contributors to jitter related problems. IR Compliance S Suggested IR Profile Devices are built using lead free epoxy and can be subjected to standard lead free IR reflow conditions shown in Table 4. Contact pads are gold over nickel and lower maximum temperatures can also be used, such as 220C. Table 4. Reflow Profile Parameter Symbol alue PreHeat Time ts 200 sec Max Ramp Up R UP 3 C/sec Max Time above 27 C tl 50 sec Max Time to Peak Temperature tamb-p 480 sec Max Time at 260 C tp 30 sec Max Time at 240 C tp2 60 sec Max Ramp down R DN 6 C/sec Max ectron International 267 Lowell Road, Suite 02, Hudson, NH 0305 Tel: -88-ECTRON- Page5
6 Environmental Compliance Table 5. Environmental Compliance Parameter Condition Mechanical Shock MIL-STD-883 Method 2002 Mechanical ibration MIL-STD-883 Method 2007 Temperature Cycle MIL-STD-883 Method 00 Solderability MIL-STD-883 Method 2003 Fine and Gross Leak MIL-STD-883 Method 04 Resistance to Solvents MIL-STD-202 Method 25 Moisture Sensitivity Level MSL Contact Pads Gold (0.3-.0um) over Nickel S Absolute Maximum Ratings and Handling Precautions Maximum Ratings, Tape & Reel Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied or any other excess of conditions represented in the operational sections of this data sheet. Exposure to absolute maximum ratings for extended periods may adversely affect device reliability. Although ESD protection circuitry has been designed into the C-7, proper precautions should be taken when handling and mounting, I employs a Human Body Model and Charged Device Model for ESD susceptibility testing and design evaluation. ESD thresholds are dependent on the circuit parameters used to define the model. Although no industry standard has been adopted for the CDM a standard resistance of.5kohms and capacitance of 00pF is widely used and therefor can be used for comparison purposes. Table 6. Maximum Ratings Parameter alue Unit Storage Temperature -55 to 25 C Junction Temperature (maximum) 50 C Supply oltage -0.5 to 5.0 Enable Disable oltage -0.5 to DD +0.5 ESD, Human Body Model 500 ESD, Charged Device Model 500 Table 7. Tape and Reel Information Tape Dimensions (mm) Reel Dimensions (mm) W F Do Po P A B C D N W W2 #/Reel ectron International 267 Lowell Road, Suite 02, Hudson, NH 0305 Tel: -88-ECTRON- Page6
7 Ordering Information C-7- E C E - K A A N - xxxmxxxxxx Frequency in MHz Product XO Package 7.0 x 5.0mm oltage Options E: +3.3 dc ±5% H: +2.5 dc ±5% Output C: LPECL D: LDS Temp Range W: -0/70 C E: -40/85 C F: -40/05 C Other (Future Use) N: Standard Enable/Disable Pin A: Pin (Pin 2 = No Connection) B: Pin 2 (Pin = No Connection) Enable/Disable Logic A: Output is Enabled with a Logic High or open, Output is Disabled with a Logic Low Stability E: ±20ppm F: ±25ppm K: ±50ppm S: ±00ppm Example: C-7-ECE-KAAN-56M Notes: a) Only ±00ppm stability option is available for temperature range of -40/05 C. ±50ppm is available in some cases. b) Not all combinations of options are available. Other specifications may be available upon request. Consult with factory. Revision History Revision Date Approved Description Feb 07, 207 RC Rev 0.: C-7 Preliminary datasheet for factory approval (Internal Revision) July 6, 207 N Rev 0.2: Internal Revision based on factory information and Website release. USA: ectron International 267 Lowell Road Unit 02 Hudson, NH 0305 Tel: Fax: For Additional Information, Please Contact Europe: ectron International Landstrasse, D Neckarbischofsheim, Germany Tel: +49 (0) Fax: +49 (0) Asia: I Shanghai 68 Yin Cheng Road(C), 22nd Floor One LuJiaZui Pudong, Shanghai 20020, China Tel: Fax: Disclaimer ectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. ectron International 267 Lowell Road, Suite 02, Hudson, NH 0305 Tel: -88-ECTRON- Page7 Rev 0.2: 07/6/207 N
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XCO FAST TURNAROUND DESCRIPTION FEATURES + The XCO clock series is a cutting edge family of low to high frequency, low jitter output, single or multi - frequency clock oscillators. The XCO clocks are available
HT-MM900A Military Temperature Oscillator
HT-MM900A Military Temperature Oscillator Features Performance Specifica ons Applications Frequency Range 1 MHz and 137 MHz accurate to 6 decimal places Military Applica ons Low power consump on of 4.5
PX-702 PX-570 PX-420
High Temperature Low Power Real Time Clock Crystal Oscillators PX-702 PX-570 PX-420 Vectron offers a High Temperature Low Power Real Time Clock Crystal Oscillator (HT RTC XO) product platform for extreme
TRU050 Complete VCXO based Phase-Locked Loop
TRU050 Complete CXO based Phase-Locked Loop Description The TRU050, CXO based PLL The I TRU050 is a user-configurable crystal-based PLL integrated circuit. It includes a digital phase detector, op-amp,
DSC x 1.2 mm Low-Power Ultra-Miniature Oscillator. General Description. Features
1.6 x 1.2 mm General Description The is an ultraminiature, lowprofile complete timing solution in a 1.6 x 1.2 mm footprint. The device is available in frequencies from 1 to 150 MHz with frequency stability
ELECTRICAL SPECIFICATIONS PARAMETER SYMBOL CONDITION VALUE UNIT. Vs ±5% Vs ±5% Vs ±5%
Page 1 of 5 0.6 RMS Phase Jitter over 12 khz to 20 MHz bandwidth 31 Standard frequencies from 25 MHz to 212.5 MHz LPECL and LDS Output types SMD package 7.0 x 5.0 mm ELECTRICAL SPECIFICATIONS PARAMETER
Programmable Low-Jitter Precision LVDS Oscillator
General Description The & series of high performance fieldprogrammable oscillators utilizes a proven silicon MEMS technology to provide excellent jitter and stability over a wide range of supply voltages
Low-Jitter Precision LVPECL Oscillator
DSC0 General Description The DSC0 & 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.
TX-700 Temperature Compensated Crystal Oscillator
TX-700 Temperature Compensated Crystal Oscillator Features EFC Standard Small Size 0% RoHS Compliant Low Profile range of 6.4-52 MHz Standard Frequencies:, 12.8, 16.384, 19.44, 20, 20.48 MHz Applications
Model 356P/L Advanced PLL LVPECL or LVDS VCXO
Features Ceramic Surface Mount Package Low Phase Jitter Performance, 500fs Typical Advanced PLL Design w/ Low Fundamental Crystal Frequency Range 10MHz 800MHz * +2.5V or +3.3V Operation Output Enable Standard
Low-Jitter Precision LVDS Oscillator
General Description The DSC0 & 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.
ELECTRICAL SPECIFICATIONS PARAMETER SYMBOL CONDITION VALUE UNIT. Any Frequency between Frequency range, accurate to 6 decimal places
Page 1 of 5 Ultra low phase jitter: 0.5ps ( 12kHz to 20MHz ) LCMOS/ LTTL compatible output SMD package 7.0 x 5.0 mm ELECTRICAL SPECIFICATIONS PARAMETER SYMBOL CONDITION ALUE UNIT Min. Typ. Max. Frequency
EX-421 Evacuated Miniature Crystal Oscillator
EX-421 Evacuated Miniature Crystal Oscillator EX-421 Description The EX-421 provides exceptionally low aging rates and tight temperature stabilities in an extremely small package over a wide range of environmental
MD-403 I2C InterfaceOven Controlled Crystal Oscillator
MD-43 I2C InterfaceOven Controlled Crystal Oscillator MD-43 The MD-43 is a Vectron module that contains a medium size ovenized crystal oscillator and an I 2 C interface that communicates with an onboard
HCMOS 7 x 5mm 1.8V Oscillator
HCMOS 7 x 5mm 1.8V Oscillator Features This part is no longer available from Fox, please contact IDT for this product. Model: FXU-HC71 SERIES Freq: 0.016 MHz to 125 MHz Rev. 08/31/2015 ULTRA Low Jitter
LVPECL 5 x 3.2mm 1.8V Oscillator
LVPECL 5 x 3.2mm 1.8V Oscillator Features This part is no longer available from Fox, please contact IDT for this product. Model: FXU-PC51 SERIES Freq: 0.016 MHz to 670 MHz Rev. 05/27/2015 ULTRA Low Jitter
OX-221 Oven Controlled Crystal Oscillator
OX-221 Oven Controlled Crystal Oscillator OX-221 Features Surface Mount package SC_CUT Crystal Low Profile Compact Package standard frequency: 1, 2, 3.72 MHz Applications Base stations Test equipment Synthesizers
CMOS, Ultra-low Jitter Voltage Controlled Crystal Oscillators (VCXOs)
GTJF538 series (5.0x3.2x1.4 mm, 8 pads), a member of Mercury QuikXO quick-turn Voltage Controlled Crystal Oscillators 9VCXOs), features CMOS output and femtosecond (f. sec.) RMS phase jitter (163 f. sec.
LVDS 5 x 3.2mm 2.5V Oscillator
LVDS 5 x 3.2mm 2.5V Oscillator Features This part is no longer available from Fox, please contact IDT for this product. Model: FXU-LC52 SERIES Freq: 0.016 MHz to 1.35 GHz Rev. 07/08/2015 ULTRA Low Jitter
ELECTRICAL SPECIFICATIONS PARAMETER SYMBOL CONDITION VALUE UNIT. 52 standard frequencies between 3.57MHz and MHz
Frequency Oscillator Page 1 of 6 Low Power Consumption of 3.5 typical at 1.8 52 Standard frequencies between 3.57MHz and 77.760 MHz HCMOS/ LCMOS compatible output SMD package 2.0 x 1.6 mm ELECTRICAL SPECIFICATIONS
DS4-XO Series Crystal Oscillators DS4125 DS4776
Rev 2; 6/08 DS4-XO Series Crystal Oscillators General Description The DS4125, DS4150, DS4155, DS4156, DS4160, DS4250, DS4300, DS4311, DS4312, DS4622, and DS4776 ceramic surface-mount crystal oscillators
Dynamic Engineers Inc.
Features and Benefits Standard and custom frequencies up to 2100 MHz Femto-second (f sec.) RMS phase jitter Short lead time Typical Applications Low noise synthesizer VCO reference Optical Communication
MHz. Performance Specifications
VX-501-0276-245M76 Preliminary version: Subject to technical modification. VCXO VX-501-0276-245M76 Nominal frequency (f0) 245.76 MHz Performance Specifications Frequency stabilities vs. operating temp.
PCI-EXPRESS CLOCK SOURCE. Features
DATASHEET ICS557-01 Description The ICS557-01 is a clock chip designed for use in PCI-Express Cards as a clock source. It provides a pair of differential outputs at 100 MHz in a small 8-pin SOIC package.
Ultra-miniature, Low Power, kHz MEMS Oscillator
Moisture Sensitivity Level (MSL) 1 ESD Sensitive FEATURES: Smallest 32.768kHz TCXO in the market: 1.54 x 0.84 x 0.6mm Supply oltage: 1.5 to 3.63 Ultra-Low Current Consumption: 1.52µA max.(core current,
Low Power (na Current Consumption) KHz ME831, ME832, ME833, ME834 Series
Features: ME83x is a 32.768 KHz CMOS output TCXO with a maximum frequency stability of ± 5 ppm (± 2.62 minutes / year) over -0 to +85 C, much better time-keeping accuracy than the competition. A proprietary
Low-Jitter I 2 C/SPI Programmable CMOS Oscillator
Datasheet General Description The DSC2110 and series of programmable, highperformance CMOS oscillators utilize a proven silicon MEMS technology to provide excellent jitter and stability while incorporating