1
dc1861af
DEMO MANUAL DC1861A
DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
LTC5567
300MHz to 4GHz Active Downconverting
Mixer with Wideband IF
Demonstration circuit 1861A is optimized for evaluation
of the LTC
®
5567 active downconverting mixer. Its RF
and LO input ports are internally matched to 50Ω, from
1.4GHz to 3GHz, and from 1GHz to 4GHz, respectively.
The IF output uses a bandpass network followed by an 8:1
transformer to provide a 50Ω match at 153MHz. The LO
input is easily matched for higher or lower frequencies, as
low as 300MHz, with simple external matching. The low-
capacitance differential IF output is usable up to 2.5GHz.
Design files for this circuit board are available at
http://www.linear.com/demo
Supply Voltage (V
CC
, IF
+
, IF
–
) ..................................4.0V
Enable Input Voltage (EN) ................–0.3V to V
CC
+ 0.3V
LO Input Power (350MHz to 4.5GHz) ................. +10dBm
LO Input DC Voltage ............................................... ±0.1V
RF Input Power (300MHz to 4GHz) .................... +15dBm
RF Input DC Voltage ............................................... ±0.1V
TEMP Monitor Input Current ..................................10mA
Operating Temperature Range (T
C
) ........ –40°C to 105°C
Junction Temperature (T
J
) .................................... 150°C
Storage Temperature Range .................. –65°C to 150°C
CAUTION: This part is sensitive to electrostatic discharge
(ESD). Observe proper ESD precautions when handling
the LT5567.
L
, LT, LTC, LTM, μModule, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
BOARD PHOTO
Figure 1. Test Setup for Mixer Two-Tone Measurements
This datasheet has been downloaded from
at this
