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DESCRIPTION
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
BOARD PHOTO
This datasheet has been downloaded from
300MHz to 4GHz Active Downconverting
Figure 1. Test Setup for Mixer Two-Tone Measurements
DEMO MANUAL DC1861A
Mixer with Wideband IF
ABSOLUTE MAXIMUM RATINGS
+
Supply Voltage (V
, IF
, IF
CC
Enable Input Voltage (EN) ................–0.3V to V
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
Junction Temperature (T
) .................................... 150°C
J
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.
http://www.digchip.com
at this
LTC5567
–
) ..................................4.0V
+ 0.3V
CC
) ........ –40°C to 105°C
C
dc1861af
1
page
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Summary of Contents for Linear Technology DC1861A
- Page 1 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.
- Page 2 DEMO MANUAL DC1861A NOTES ON TEST EQUIPMENT AND SETUP • High performance signal generators with low harmonic • Spectrum analyzers can produce significant internal outputs should be used for 2-tone measurements. Oth- distortion products if they are overdriven. Generally, erwise, lowpass filters at the signal generator outputs spectrum analyzers are designed to operate at their should be used to suppress harmonics.
- Page 3 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
- Page 4 Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods.
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