MACOM ETC4-1-2 Datasheet
E-Series RF 1:4 Flux Coupled Step-up Transformer
2.0 - 800 MHz
ETC4-1-2
Features
• Surface Mount
• 1:4 Impedance Ratio
• CT on Secondary
• Available on Tape & Reel
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.
SM-22 Package
0.050
(1.27)
0.150
(3.81)
0.100
(2.54)
Schematic
Primary Dot 4
3 turns
Primary 5
0.030
(0.762)
0.150
(3.81)
0.030
(0.762)
0.030
(0.762)
0.150 MAX
(3.81 MAX)
0.130
(3.30)
3 turns
0.065
(1.65)
0.055
0.190
(1.397)
(4.83)
0.030
(0.762)
3 Secondary Dot
3 turns
2 Secondary CT
3 turns
1 Secondary
Electrical Specifications @25°C
Parameter Units Nominal Maximum Mean (x)
Frequency Range 2.0 - 800 MHz — — — —
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
Note: Mean and Sigma calculated from average loss at @ 105 MHz.
Please Note that the photograph above indicates typical package only, not actual unit.
dB
dB
dB
dB
dB
Degrees
Degrees
—
—
—
—
—
—
—
1.0
2.0
3.0
0.25
1.0
2.0
10
—
1.21
—
—
—
—
—
Sigma (σ)
V2.00 S 0258 M
—
0.032
—
—
—
—
—
ETC4-1-2
Absolute Maximum Ratings
Parameter Absolute Maximum
RF Power 250 mW
DC Current 30 mA
Operating Temperature -40°C to +85°C
Storage Temperature -40°C to +85°C
Functional Configuration
Function Pin No.
Secondary 1
Secondary CT 2
Secondary Dot 3
Primary Dot 4
Primary 5
Typical Performance Over Extended Bandwidth (30kHz - 1.0GHz)
Insertion Loss
Phase Unbalance
Input Impedance Amplitude Unbalance
Note: All measurements performed on Hewlett Packard 8753D Network Analyzer (201 sample points, linear s cale) in a 50 ohm coplanar
waveguide environment. Tables created using MDS software.
V2.00 S 0258 M
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