器件资料摘要：
3A325
Surface Mount Balun
VER9/22/00
Page 1 of 3
Available on Tape and
Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
(315) 432-8909
(801) 544-2414
3A325
Features:
• 450 – 860 MHz
• 180° Transformer
• 50 Ohm to 25 Ohm
• Broad Band
• Low Insertion Loss
• High Power
• Even Order Harmonic
Suppression
• Input to Output DC
Isolation
• Surface Mountable
• Tape & Reel
• Convenient Package
Description:
The 3A325 is a low profile balanced to unbalanced transformer
designed for push-pull amplifiers in an easy to use surface
mount package for NMT450 and TV broadcast applications.
These compact Xinger surface mount baluns are ideal for high
volume manufacturing and are more reliable and repeatable
than traditional baluns. The 3A325 has an unbalanced port
impedance of 50Ω and balanced port impedances of 25Ω to
ground with a 50Ω 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 3A325 is available on tape and reel for
pick and place high volume manufacturing.
MECHANICAL OUTLINE:
ELECTRICAL SPECIFICATIONS:
3A325 - Surface Mount Balun
Parameter Specification
Operating Frequency 450-860 MHz
Unbalanced Port Impedance 50Ω
Balanced Port Impedance (2ó3) 50Ω (25Ω to Ground)
Unbalanced Port Return Loss -15 dB
Insertion Loss (max) 0.35 dB
Output Amplitude Balance (p-p) 0.5 dB
Phase Balance 180 + 5 degrees
Power Rating (max) 275 Watts CW
ΘJC 4.4 oC/Watt
Specifications based on performance of units installed in an RF microstrip test fixture. 50 ohms nominal input impedance, and 25 ohm nominal
output impedance. Temperature of operation, -55oC to +85oC. Unit will operate to +125oC with minor degradation in Insertion Loss
performance. Specifications subject to change without notice.
Surface Mount Balun
VER9/22/00
Page 1 of 3
Available on Tape and
Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
(315) 432-8909
(801) 544-2414
3A325
Features:
• 450 – 860 MHz
• 180° Transformer
• 50 Ohm to 25 Ohm
• Broad Band
• Low Insertion Loss
• High Power
• Even Order Harmonic
Suppression
• Input to Output DC
Isolation
• Surface Mountable
• Tape & Reel
• Convenient Package
Description:
The 3A325 is a low profile balanced to unbalanced transformer
designed for push-pull amplifiers in an easy to use surface
mount package for NMT450 and TV broadcast applications.
These compact Xinger surface mount baluns are ideal for high
volume manufacturing and are more reliable and repeatable
than traditional baluns. The 3A325 has an unbalanced port
impedance of 50Ω and balanced port impedances of 25Ω to
ground with a 50Ω 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 3A325 is available on tape and reel for
pick and place high volume manufacturing.
MECHANICAL OUTLINE:
ELECTRICAL SPECIFICATIONS:
3A325 - Surface Mount Balun
Parameter Specification
Operating Frequency 450-860 MHz
Unbalanced Port Impedance 50Ω
Balanced Port Impedance (2ó3) 50Ω (25Ω to Ground)
Unbalanced Port Return Loss -15 dB
Insertion Loss (max) 0.35 dB
Output Amplitude Balance (p-p) 0.5 dB
Phase Balance 180 + 5 degrees
Power Rating (max) 275 Watts CW
ΘJC 4.4 oC/Watt
Specifications based on performance of units installed in an RF microstrip test fixture. 50 ohms nominal input impedance, and 25 ohm nominal
output impedance. Temperature of operation, -55oC to +85oC. Unit will operate to +125oC with minor degradation in Insertion Loss
performance. Specifications subject to change without notice.