(Preliminary)
38MHz to 320MHz Low Phase Noise VCXO
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 8/19/09 Page 4
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS SYMBOL MIN. MAX. UNITS
Supply Voltage V
DD
4.6 V
Input Voltage, dc V
I
-0.5 V
DD
+0.5 V
Output Voltage, dc V
O
-0.5 V
DD
+0.5 V
Storage Temperature T
S
-65 150
C
Ambient Operating Temperature* T
A
-40 85
C
Junction Temperature T
J
125
C
Lead Temperature (soldering, 10s) 260
C
ESD Protection, Human Body Model 2 kV
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the
device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other
conditions above the operational limits noted in this specification is not implied.* Note: Operating Temperature is guaranteed by design for all parts
(COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
2. Crystal Specifications
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Crystal Resonator
Frequency
F
XTAL
Parallel Fundamental Mode 19 40 MHz
at VCON = 0V 17.7
at VCON = 1.65V 9.5
Crystal Loading Rating C
L (XTAL)
at VCON = 3.3V 5.4
pF
Crystal Pullability C
0
/C
1 (XTAL)
AT cut 250 -
Recommended ESR R
E
AT cut 30 Ω
Note: Crystal Loading rating: The listed numbers are for the IC only. Specify the crystal for the value at VCON = 1.65V and add the PCB & package
parasitic. A round number (i.e. 12pF) can be achieved by adding external capacitors. Try to add the same value to XIN and XOUT, and please note,
that frequency pulling and oscillator gain may decrease.
3. General Electrical Specifications
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
38MHz<F
OUT
<100MHz 65/45/30
Supply Current, Dynamic
(with Loaded Outputs)
I
DD
LVPECL/
LVDS/
LVCMOS
100MHz<F
OUT
<320MHz 80/60/40
mA
Operating Voltage V
DD
2.97 3.63 V
Output Clock Duty Cycle
@ 50% V
DD
(LVCMOS)
@ 1.25V (LVDS)
@ V
DD
– 1.3V (LVPECL)
45 50 55 %
Short Circuit Current
50
mA
Note: LVCMOS output is not advised above 200MHz with 15pF load; and 320MHz with 10pF load.
