VTO-3981-SMD & VTO-4301-SMD October 2001 Preliminary
Specificat ion is subject t o change wit hout prior not ificat ion
Voltage Controlled Oscillator
VTO-3981-SMD
VTO-4301-SMD
_____________________
Feat ures
Applications
.General Description
· Operat ing frequency:
39.813 or 43.018 GHz
· Transmitter and Receiver
Subsystems for OC-768 /
STM-256 Applications
The VTO-3981-SMD and VTO-
4301-SMD provide a low jitter
source as a key component for
the data re-timing in the
· Output Power ( 50 Ohm
Load) : 0 dBm Minimum
· 40 GHz Source
· Modulation Sensitivity: 40
t o 80 MHz/V
transmitter subsystem and
clock and data recovery in the
receiver of the 40 Gb fiber optic
systems.
· Tuning Volt age: 0 t o 5
Volt s
· Low J itter ( Less than 50
femto seconds from 50
KHz t o 80 MHz)
The oscillator uses an
extremely high performance
low noise Agilent Silicon
Bipolar transistor in
conjunction with a hyperabrupt
varactor diode to provide the
tuning capability. The
oscillator output is then
coupled to an Agilent GaAs
FET MMIC amplifier and MMIC
multiplier to quadruple the
frequency. Finally the output is
filtered through a band pass
filter prior to outputting a
differential signal at 39.813 or
43.018 GHz.
· Differential Output
· Frequency Drift over 0°C
to +75°C: 100 MHz
· Surface Mount Package
· 1.181 x 0.95 x 0.4 inches
Functional Block diagram
X4
Splitter
Output
VTO-3981-K Absolut e Maximum Rat ings 1
Paramet er
Unit s
Rat ings
Positive Supply Voltage
Negative Supply Voltage
Tuning Voltage
V
V
V
0 to +6
0 to –6
0 to +6
Operating Temperature
Storage Temperature
0 to +85
-40 to +130
C°
C°
(1)
Notes:
Operation of this device in excess of any of these limits may cause permanent damage
