Agilent VTO-3981-K, VTO-4301-K
Voltage Controlled Oscillator
Data Sheet
Features
鈥?Operating frequency:
39.813 GHz or 43.018 GHz
鈥?Output power (50鈩?load):
3 dBm minimum
Description
The VTO-3981-K and VTO-4301-K
provide a fundamental, low jitter
source as a key component for
the data re-timing in the trans-
mitter subsystem and clock and
data recovery in the receiver of
the 40 Gb fiber optic systems.
The oscillator uses an extremely
high performance low noise
Agilent Silicon Bipolar transistor
in conjunction with a hyper-
abrupt varactor diode to provide
the tuning capability. The oscilla-
tor output is then coupled to an
Agilent GaAs FET MMIC ampli-
fier and MMIC multiplier chain
to quadruple the frequency.
Finally the output is filtered
through a band pass filter prior
to outputting the signal at 39.813
or 43.018 GHz.
Functional Block Diagram
鈥?Modulation sensitivity:
20 to 40 MHz/V
鈥?Tuning voltage:
0 to 10 Volts
Amp
X4
Output
鈥?Low jitter (Less than 50 femto
seconds from 50 KHz to 80 MHz)
鈥?Frequency drift over 0擄C to +75擄C:
80 MHz
鈥?1.181" x 0.95" x 0.4"
鈥?5 Volt bias optional
Applications
鈥?Transmitter and receiver sub-
systems for OC-768/STM-256
applications
鈥?40 GHz source
VTO-3981-K, VTO-4301-K Absolute Maximum Ratings
[1]
Parameter
Positive Supply Voltage
Negative Supply Voltage
Tuning Voltage
Operating Temperature
Storage Temperature
Units
V
V
V
擄C
擄C
Ratings
0 to +10
0 to -6
0 to +12
0 to +85
-40 to +130
Note:
1. Operation of this device in excess of any of these limits may cause permanent damage.
1
2
3
4
