器件名称: 3A412
功能描述: Balun Transformers 50 to 12.5 Balanced
文件大小: 319.08KB 共2页
简 介:Model 3A412
Rev. B
Balun Transformers 50 to 12.5 Balanced
The 3A412 is a low profile balanced to unbalanced transformer designed for pushpull amplifiers in an easy to use surface mount package for AMPS and GSM. These compact Xinger surface mount baluns are ideal for high volume manufacturing and are more reliable and repeatable than traditional baluns. The 3A412 has an unbalanced port impedance of 50 and balanced port impedances of 12.5 to ground with a 25 balance between outputs. This eases the matching of the push-pull amplifier’s power transistors, which have low impedance levels. The output ports have equal amplitude (-3dB) with 180 degree phase differential. The Xinger balun is a result of years of research and development culminating with a solution so unique, a patent is pending on the design approach. The 3A412 is available on tape and reel for pick and place high volume manufacturing.
Description
Features:
ELECTRICAL SPECIFICATIONS***
Frequency
MHz
800 – 1000 MHz 180° Transformer 50 Ohm to 2 x 12.5+j Ohm Low Insertion Loss High Power Even Order Suppression Input to Output DC Isolation Surface Mountable Tape & Reel Convenient Package
Unbalanced Port Impedance
Ohms
Balanced Port Impedance*
Ohms
Return Loss
dB min
Insertion Loss
dB max
800-1000 869-894 925-960 Amplitude Balance
dB max
50 50 50 Phase Balance
Degrees max
12.5+j 12.5+j 12.5+j Power Handling
Watts
15 15 15 ΘJC
C / Watt
0.48 0.35 0.40 Operating Temp.
C
0.40 0.40 0.40
180± 5.0 180± ……
