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VC-715
LVPECL Voltage Controlled Crystal Oscillator
Features
* Small Industry Standard Package, 5.0 x 7.5 x 2.0 mm * 19.44 MHz to 77.76 MHz Output Frequency * 3.3 V Operation * Fundamental crystal for ultra low jitter * Complementary PECL Outputs * Low phase noise and custom options * 0/70 or -40/85 C operating temperature * Enable /Disable (PECL) * Lead Free
Applications
PLL circuits for Clock Smoothing and Frequency Translation * Fiber Channel * SONET * SDH, ITU-T G.709 * SONET, GR-253-CORE Issue3
Description
The VC-715 is a voltage controlled crystal oscillator that operates at the fundamental frequency of the internal crystal. The crystal is a high-Q quartz device that enables the circuit to achieve low phase jitter performance over a wide operating temperature range. The oscillator is housed in an industry standard hermetically sealed leadless surface mount package and is available on tape and reel.
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Page 1 of 5
Tel: 1-88-VECTRON-1
Website: www.vectron.com
VC-715 Voltage Controlled Crystal Oscillator
Electrical Performance Parameter Frequency Supply Voltage (+3.3 V) Supply Current Output Logic Levels Output Logic High 0 / 70 C Output Logic Low 0 / 70 C Output Logic High -40 / 85 C Output Logic Low -40 / 85 C Transition Times Rise Time Fall Time Symmetry or Duty Cycle Operating temperature Test Conditions for APR Absolute Pull Range Gain Transfer Control Voltage Bandwidth (-3dB) Input Leakage, Control Voltage Input Package Size
Symbol fO VDD IDD VOH VOL VOH VOL tR tF SYM VC APR BW
Min 19.440 3.135
Typical 3.30
Maximum 77.76 3.465 <65 VDD -0.880 VDD -1.620 VDD -0.880 VDD -1.555 1 1 55 3.0
Units MHz V mA V V V V ns ns % C V ppm ppm/V kHz uA mm
VDD -1.025 VDD -1.810 VDD -1.085 VDD -1.830
45 0.3 50
50 0/70 or -40/85
Positive 10 1 5.0 x 7.5 x 2.0
(-1.3V to +2V) Disable, Enable ( > 0.975V, Open)
1
6
(+2V)
80%
tR
tF
SYM = 100 x tA / tB
VOH
2
5
COutput
50%
(-1.3V)
3
4
Output 50
20% VOL
Figure 1. Test Circuit (50 v) 3.3
tA tB
Test Circuit Notes: 1) To Permit 50 Measurement of Outputs, all DC Inputs are Biased Down 1.3V. 2) All Voltage Sources Contain Bypass Capacitors to Minimize Supply Noise. 3) 50 Terminations are Within Test Equipment.
Figure 1 Production Test Circuit
Figure 2. PECL Waveform
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Page 2 of 6
Tel: 1-88-VECTRON-1
Website: www.vectron.com
VC-715 Voltage Controlled Crystal Oscillator
Outline Diagram
6 5 4
Pad Layout
V C -715
XX.XXX
5.080.15 [0.2000.006]
VI YWW
1 2 3 1.950.18 [0.0770.007] 1.40 [0.055]
1.96 [0.077]
7.490.15 [0.2950.006] 1.91 [0.075]
3.66 [0.144] 1.78 [0.070] 2.54 [0.100] 5.08 [0.200]
mm [inch]
1.27 [0.050] R0.70 [0.028] 2.54 [0.100] 5.08 [0.200]
mm [inch]
Pin Out
Pin
1 2 3 4 5 6
Symbol
VC OE GND Output COutput VCC
Function
VCXO Control Voltage Output Enable/Disable Enabled = PECL Logic 1 (or Open) Disabled = PECL Logic 0 Case and Electrical Ground Output Complementary Output Power Supply Voltage (3.3 V)
Tape and Reel (EIA-481-2-A)
Po
ODo W2
F W D C N A
P1
W1
B
Tape Dimensions (mm)
Dimension
Tolerance VC-715
Reel Dimensions (mm)
F Do
Typ 1.5
W
Typ 16
Po
Typ 4
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
Typ 7.5
# Per Reel
200
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Page 3 of 6
Tel: 1-88-VECTRON-1
Website: www.vectron.com
VC-715 Voltage Controlled Crystal Oscillator
Suggested Output Load Configurations
0.10 F 0.01 F +3.3V 0.10 F 0.01 F +3.3V +3.3V
150
150
Vc OD Gnd
1 2 3
6 5 4
Vcc COutput Output Z = 50 Z = 50 100
Vc OD Gnd
1 2 3
6 5 4
Vcc 40 COutput Output Z = 50 Z = 50 40
49
49
240
240
LV-PECL to LV-PECL: For short transmission lengths, the power consumption could be reduced by removing the 100 resistor and doubling the value of the pull down resistors.
LV-PECL to LVDS: Restricted for short transmission lengths. Configuration may require modification depending on LVDS receiver.
0.10 F 0.01 F
+3.3V
0.10 F 0.01 F
+2.0V
Vc OD Gnd
1 2 3
6 5 4
Vcc COutput Output 0.01 F 0.01 F
Vc OD -1.3V
1 2 3
6 5 4
Vcc COutput Output
240
240
Functional Test: Allows standard power supply configuration. Since AC coupled, the LV-PECL levels cannot be measured.
Production Test: Allows direct DC coupling into 50 measurement equipment. Must bias the power supplys as shown. Similar to Figure 1.
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Page 4 of 6
Tel: 1-88-VECTRON-1
Website: www.vectron.com
VC-715 Voltage Controlled Crystal Oscillator
Absolute Maximum Ratings
Parameter Power Supply Output Current Voltage Control Range Storage Temperature Soldering Temp/Time2 Symbol VCC Iout VC TS TLS Ratings 0 to 6 25 0 to VCC -55 to 125 240/10 Unit V mA V C C/sec
1) 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 data sheet. Exposure to absolute maximum ratings for extended periods may adversely affect device reliability. 2) Contact pads are gold over nickel, the maximum solder temp can be lower, e.g. 220C.
Reliability
The VC-715 family is capable of meeting the following qualification tests:
Environmental Compliance
Parameter Mechanical Shock Mechanical Vibration Solderability Gross and Fine Leak Resistance to Solvents Conditions MIL-STD-883, Method 2002 MIL-STD-883, Method 2007 MIL-STD-883, Method 2003 MIL-STD-883, Method 1014 MIL-STD-883, Method 2015
Handling Precautions
Although ESD protection circuitry has been designed into the VC-715 proper precautions should be taken when handling and mounting. VI employs a human body model and a charged-device model (CDM) for ESD susceptibility testing and design protection evaluation.
ESD Ratings
Model Human Body Model Charged Device Model Minimum 500 500 Conditions MIL-STD 883, Method 3015 JESD 22-C101
VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling, and IR reflow simulation. The VC-715's are hermetically sealed so an aqueous wash is not an issue. Contact pads are gold over nickel.
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Page 5 of 6
Tel: 1-88-VECTRON-1
Website: www.vectron.com
VC-715 Voltage Controlled Crystal Oscillator
Ordering Information
VC - 715 - D F F - G F L - 19.440
Product Family
VC: VCXO
Frequency
Part Specific
Package
715: 5.0 x 7.5 x 2.8 mm Low Frequency PECL
Linearity, Stability
L: + 10 linearity, A: N/A
Input
D: 3.3 Vdc +5%
Enable - Disable)
F: Pin 2
Output
F: Complementary PECL
Absolute Pull Range
G: + 50 ppm
Operating Temperature
F: -40 to 85 C C: 0 to 70 C
For Additional Information, Please Contact:
USA: Vectron International, 267 Lowell Rd, Hudson, NH 03051 . . . . . . . EUROPE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tel: 1-88-VECTRON-1 Tel: 49 (0) 3328 4784 30 Fax: 1-888-FAX-VECTRON Fax: 49 (0) 3328 4784 30 Fax: 86 21 28909240 / 28909999
ASIA: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tel: 86 21 28909740/ 41 / 42
VC-715_021605
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Page 6 of 6
Tel: 1-88-VECTRON-1
Website: www.vectron.com

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