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dc2461af

DEMO MANUAL DC2461A

Description

Absolute MAxiMuM input

rAtings

LTC5548

2GHz to 14GHz Microwave

Mixer with Low IF Frequency

Demonstration circuit 2461A is optimized for evaluation

of the LTC®5548 passive double-balanced mixer with

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 differential IF port is usable from

DC to 6GHz. The LTC5548 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 or LTC6947/LTC6948 family of

frequency synthesizers.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2461A

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.

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Figure 1. DC2461A

Supply Voltage (EN)....................................................4V

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 (LF to 6GHz).................................20dBm

IF Input DC Voltage ................................................ ±0.1V

Storage Temperature Range .................. –65°C to 150°C

Caution: This part is sensitive to electrostatic discharge

(ESD). Observe proper ESD precautions when handling

the LTC5548.