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VX-700
Voltage Controlled Crystal Oscillator Previous Vectron Model VC-710
VX-700
Description
The VX-700 is a Voltage Controlled Crystal Oscillator that operates at the fundamental frequency of the internal HFF crystal. The HFF crystal is a high-Q quartz device that enables the circuit to achieve low phase jitter performance over a wide operating temperature range. The VX-700 is housed in an industry standard hermetically sealed LCC package and available in tape and reel.
Features
* * * * * * * * * * Fundamental VCXO with no subharmonics or spurs Low Jitter, sub 1pS performance Output Frequencies from 77.76 MHz to 200 MHz 3.3 V Operation LVPECL Output Output Disable Feature Excellent 20ppm temperature stability, 0/70C or -40/85C operating temperature Small Industry Standard Package, 5.0x7.5x1.8mm Product is free of lead and compliant to EC RoHS Directive * * * * *
Applications
Ideal for PLL circuits for clock smoothing and frequency translation
SONET, SDH Synchronous Ethernet Fiber Channel LAN / WAN Test and Measurement
Block Diagram
Complementary Output Output VDD
Crystal
Oscillator
VC
E/D
Gnd
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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Performance Specifications
Table 1. Electrical Performance Parameter
Voltage1 Current (No Load) Nominal Frequency Linearity3 Gain Transfer Positive (See pg 5) Temperature Stability3 Output Logic Levels Output Logic High Output Logic Low Current Rise Time4 Fall Time Symmetry3 Jitter (12 kHz - 20 MHz BW)155.52MHz Period Jitter, RMS (155.520 MHz) Spurious Suppression2 Control Voltage Control Voltage Range for APR Control Voltage Input Impedance Control Voltage Modulation BW Output Enabled, Option A 8 Output Disabled, Option A Output Enabled, Option C 8 Output Disabled, Option C Operating Temperature Package Size
1] 2] 3] 4] 5] 6] 7] 8]
7 7 5 3 3 2
Symbol
VDD IDD
Min
Supply 3.135 Frequency
Typical
3.3 50
Maximum
3.465 90 200
Units
V mA MHz ppm % ppm/V ppm V
fN APR Lin KV fSTAB
77.7600 50 5 +65 20 Outputs
Absolute Pull Range 3,6
10
VOH VOL IOUT tR tF SYM J J J J
VDD-1.025 VDD-1.810
VDD-0.950 VDD-1.700
VDD-0.880 VDD-1.620 20 1 1 mA ns ns % ps ps ps ps dBc 3.0 V K kHz V V
45
50 0.3 0.5 3.0 20 -80
55 0.5 0.7
Jitter (50 kHz - 80 MHz BW)155.52MHz5 Period Jitter, Peak - Peak (155.520MHz)
VC ZIN
BW
0.3 75 10 Enable/Disable 0.7*VDD 20
VIH VIL VIL VIH TOP
0.3*VDD 0.2*VDD 0.7*VDD 0/70 or -40/85 5.0 x 7.5 x 1.8
C mm
The VX-700 power supply should be filtered, eg, 0.1 and 0.01uF to ground See Standard Frequencies and Ordering Information tables for more specific information Parameters are tested with production test circuit below (Fig 1). Measured from 20% to 80% of a full output swing (Fig 2). Integrated across stated bandwidth. Tested with Vc = 0.3V to 3.0V unless otherwise stated in part description Broadband Period Jitter measured using Lecroy Wavemaster 8600A 6 GHz Oscilloscope, 25K samples taken. See application note. Output is Enabled if E/D is left floating
Fig 1: Test Circuit
tR
Fig 2: LVPECL Waveform
tF SYM = 100 x tA / tR
tA tR
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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Outline Drawing & Pad Layout
6 5 4
XXX.XXXX VX700 YWW VDUGLA CCC-CCCC XXX.XX 35.328 VI YWW XXXMXXX
1 2 3
Dimensions in inches (mm)
Table 2. Pin Out Pin
1 2 3 4 5 6
Symbol VC
OE GND Output COutput
Function
VCXO Control Voltage Enable/Disable **See Ordering Options** Case and Electrical Ground Output Complementary Output Power Supply Voltage (3.3V 10%)
VCC
Typical Phase Noise
Typical Gain
VX-700 @ 128.00 MHz
200 140
150
120
100 100 50 Pull (ppm) 80 Vc (volts) 0 0 -50 40 -100 0.5 1 1.5 2 2.5 3 60 Gain (ppm/V)
Pull Gain
-150
20
-200
0
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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Suggested Output Load Configurations
The VX-700 incorporates a standard PECL output scheme, which are un-terminated emitters as shown in Figure 3. There are numerous application notes on terminating and interfacing PECL logic and the two most common methods are a single resistor to ground, Figure 4, and a pull-up/pull-down scheme as shown in Figure 5. An AC coupling capacitor is 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.
Figure 3 Standard PECL Output Configuration
Figure 4 Single Resistor Termination Scheme Resistor values are typically 120 to 240 ohms
Figure 5 Pull-Up Pull-Down Termination
Reliability
VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling, and IR reflow simulation. The VX-700 family is capable of meeting the following qualification tests: Table 3. Environmental Compliance Parameter
Mechanical Shock Solderability Gross and Fine Leak Resistance to Solvents Moisture Sensitivity Level Contact Pads Mechanical Vibration
Conditions
MIL-STD-883, Method 2007
MIL-STD-883, Typical Characteristics - Phase Noise Method 2002
MIL-STD-883, Method 2003 MIL-STD-883, Method 1014 MIL-STD-883, Method 2015 MSL 1 Gold over Nickel
Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied at these or any other conditions in excess of conditions represented in the operational sections of this datasheet. Exposure to absolute maximum ratings for extended periods may adversely affect device reliability. Permanent damage is also possible if OD or Vc is applied before Vcc. Table 4. Absolute Maximum Ratings Parameter
Power Supply Output Current Voltage Control Range Storage Temperature Soldering Temp/Time
Symbol
VDD IOUT VC TS TLS
Ratings
0 to 6 25 0 to VCC -55 to 125 260 / 40
Unit
V mA V C C / sec
Although ESD protection circuitry has been designed into the VX-700 proper precautions should be taken when handling and mounting. VI employs a human body model (HBM) and a charged device model (CDM) for ESD susceptibility testing and design protection evaluation. Table 5. ESD Ratings Model
Human Body Model Charged Device Model
Minimum
500V 500V
Conditions
MIL-STD-883, Method 3015 JESD22-C101
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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IR
IR Reflow
Table 6. Reflow Profile (IPC/JEDEC J-STD-020C) Parameter
PreHeat Time Ts-min Ts-max Ramp Up Time Above 217 C Time To Peak Temperature Time at 260 C Ramp Down
Symbol
tS
Value
60 sec Min, 180 sec Max 150C 200C 3 C/sec Max 60 sec Min, 150 sec Max 480 sec Max 20 sec Min, 40 sec Max 6 C/sec Max
RUP tL T25C to peak tP RDN
The device is qualified to meet the JEDEC standard for Pb-Free assembly. The temperatures and time intervals listed are based on the Pb-Free small body requirements. The VX-700 device is hermetically sealed so an aqueous wash is not an issue. Termination Plating: Electroless Gold Plate over Nickel Plate
Tape & Reel (EIA-481-2-A)
Table 7. Tape and Reel Information Tape Dimensions (mm) Dimension Tolerance
VX-700
Reel Dimensions (mm) Po Typ
4
W Typ
16
F Typ
7.5
Do Typ
1.5
P1 Typ
8
A Typ
178
B Min
1.5
C Typ
13
D Min
20.2
N Min
50
W1 Typ
16.4
W2 Max
22.4
# Per Reel
200
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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Table 8. Standard Output Frequencies (MHz)
77.76000 100.00000 120.00000 134.40000 148.35160 160.00000 175.59375 200.0000 80.00000 101.99200 122.80000 135.00000 148.50000 161.13280 180.00000 81.00000 102.40000 122.88000 138.04860 150.00000 162.00000 184.00000 88.47360 106.25000 124.41600 139.23000 153.60000 166.62700 184.32000 91.08000 108.00000 125.00000 139.26400 154.00000 166.62860 186.66600 92.16000 110.00000 128.00000 139.50000 155.52000 167.33160 187.50000 93.31200 112.00000 133.33000 143.36000 156.25000 168.04067 192.00000 96.00000 112.64000 134.21770 144.00000 157.50000 175.00000 192.45600
Ordering Information
VX-700- E C E - K X A N - xxxMxxxxxx
Product VCXO, 5x7 Package Voltage Options E: +3.3 Vdc 5%, Output C: LVPECL Temp Range T: 0/70C E: -40/85C Absolute Pull Range K: 50ppm
*Note: not all combination of options are available. Other specifications may be available upon request.
Frequency in MHz Other (Future Use) N: Standard Enable/Disable A: Enable High C: Enable Low Stability X: Standard E: 20ppm Temperature Stability
Example: VX-700-ECE-KXAN-155M520000
For Additional Information, Please Contact
USA:
Vectron International 267 Lowell Road Hudson, NH 03051 Tel: 1.888.328.7661 Fax: 1.888.329.8328
Europe:
Vectron International Landstrasse, D-74924 Neckarbischofsheim, Germany Tel: +49 (0) 3328.4784.17 Fax: +49 (0) 3328.4784.30
Asia:
Vectron International 1F-2F, No 8 Workshop, No 308 Fenju Road WaiGaoQiao Free Trade Zone Pudong, Shanghai, China 200131 Tel: 86.21.5048.0777 Fax: 86.21.5048.1881
Disclaimer
Vectron 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.
Rev: 1/10/2009 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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