TRF3703 Datasheet, PDF (14/26 Pages) Texas Instruments – 0.4-GHz TO 4-GHz QUADRATURE MODULATOR

TRF3703
SLWS184D – MARCH 2006 – REVISED JUNE 2007
APPLICATION INFORMATION AND EVALUATION BOARD
www.ti.com
Basic Connections
• See Figure 23 for proper connection of the TRF3703 modulator.
• Connect a single power supply (4.5 V–5.5 V) to pins 18 and 24. These pins should be decoupled as shown
on pins 4, 5, 6, and 7.
• Connect pins 2, 5, 8, 11, 12, 14, 17, 19, 20, and 23 to GND.
• Connect a single-ended LO source of desired frequency to LOP (amplitude between –5 dBm and 12 dBm).
This should be ac-coupled through a 100-pF capacitor.
• Terminate the ac-coupled LON with 50 Ω to GND.
• Connect a baseband signal to pins 21 = I, 22 = I, 10 = Q, and 9 = Q.
• The differential baseband inputs should be set to the proper level, 3.3 V for the TRF370333 or 1.5 V for the
TRF370315.
• RF_OUT, pin 16, can be fed to a spectrum analyzer set to the desired frequency, LO ± baseband signal.
This pin should also be ac-coupled through a 100-pF capacitor.
• All NC pins can be left floating.
14
Submit Documentation Feedback