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ETC4-1-2
E-Series RF 1:4 Flux Coupled Step-up Transformer
2.0 - 800 MHz
Features
Surface Mount
1:4 Impedance Ratio
CT on Secondary
Available on Tape & Reel
SM-22 Package
0.050
(1.27)
0.030
(0.762)
0.150
(3.81)
0.030
(0.762)
0.150 MAX
(3.81 MAX)
0.150
(3.81)
0.030
(0.762)
0.065
(1.65)
Description
M/A-COM’s ETC4-1-2 is a 1:4 RF flux coupled step-up transformer
in a low cost, surface mount package. Ideally suited for high
volume cellular and wireless applications. Typical applications
include single to balanced mode conversion and impedance
matching.
0.100
(2.54)
Schematic
Primary Dot 4
3 turns
Primary 5
Electrical Specifications @25°C
Parameter
Units
Nominal
Frequency Range 2.0 - 800
Insertion Loss (fL - fU)
10 - 100 MHz
5.0 - 600 MHz
2.0 - 800 MHz
Amplitude Unbalance
10 - 100 MHz
2.0 - 800 MHz
Phase Unbalance
10 - 500 MHz
2.0 - 800 MHz
MHz
dB
dB
dB
dB
dB
Degrees
Degrees
Note: Mean and Sigma calculated from average loss at @ 105 MHz.
Please Note that the photograph above indicates typical package only, not actual unit.
Maximum
1.0
2.0
3.0
0.25
1.0
2.0
10
0.055 0.190
(1.397) (4.83)
0.130
(3.30)
0.030
(0.762)
3 Secondary Dot
3 turns
3 turns
2 Secondary CT
3 turns
1 Secondary
Mean (x)
1.21
Sigma (σ)
0.032
V2.00
S 0258 M

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Absolute Maximum Ratings
Parameter
Absolute Maximum
RF Power
DC Current
Operating Temperature
Storage Temperature
250 mW
30 mA
-40°C to +85°C
-40°C to +85°C
Functional Configuration
Function
Secondary
Secondary CT
Secondary Dot
Primary Dot
Primary
ETC4-1-2
Pin No.
1
2
3
4
5
Typical Performance Over Extended Bandwidth (30kHz - 1.0GHz)
Insertion Loss
Phase Unbalance
Amplitude Unbalance
Input Impedance
Note: All measurements performed on Hewlett Packard 8753D Network Analyzer (201 sample points, linear scale) in a 50 ohm coplanar
waveguide environment. Tables created using MDS software.
V2.00
S 0258 M