Linear Technology LTC5549 Demo Manual

Description

Demonstration circuit 2310A is optimized for evaluation
of the LTC 5549
®
integrated LO frequency doubler. Its RF port is matched
to 50Ω from 2GHz to 13.6GHz with 9dB return loss, and
the LO port is matched to 50Ω from 1GHz to 12GHz with
10dB return loss. The IF output is matched to 50Ω from
700MHz to 6GHz with 10dB return loss. The LTC5549 can
be used for upconverting and downconverting applications.
The internal LO doubler can be enabled to allow operation
with a lower frequency LO input signal such as that from
the LTC6945/LTC6946
frequency synthesizers.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2310A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
BoarD Layout
Arrow.com.
Downloaded from
passive double-balanced mixer with
or LTC6947/LTC6948
DEMO MANUAL DC2310A
2GHz to 14GHz Passive
aBsoLute MaxiMuM input
ratings
Supply Voltage (V
Enable Input Voltage (EN) ................–0.3V to V
LO Input Power (1GHz to 12GHz) ....................... +10dBm
LO Input DC Voltage ............................................... ±0.1V
RF Input Power (2GHz to 14GHz) .......................+20dBm
RF Input DC Voltage ............................................... ±0.1V
IF Input Power (0.5GHz to 6GHz) .......................+20dBm
IF Input DC Voltage ................................................ ±0.1V
Operating Temperature Range (T
Junction Temperature (T
family of
Storage Temperature Range .................. –65°C to 150°C
CAUTION: This part is sensitive to electrostatic discharge
(ESD). Observe proper ESD precautions when handling
the LTC5549.
Figure 1. DC2310A
LTC5549
Bidirectional Mixer
) ..................................................4V
CC
) ........ –40°C to 105°C
C
) .................................... 150°C
J
+ 0.3V
CC
dc2310af
1