E-Series RF 4:1 Transformer
8.0 - 750 MHz
ETK4-1T
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacific: Tel. +81 (03) 3226-1671
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 (03) 3226-1451
Fax +44 (1344) 300 020
1
Specifications Subject to Change Without Notice.
V3.00
Features
Surface Mount
4:1 Impedance Ratio
CT on Secondary
Description
M/A-COM's ETK4-1T is a 4:1 RF 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.
Schematic
Specifications
@ 25C
Frequency Range: 8.0 - 750 MHz
Ordering Information
Part No.
Packaging
ETK4-1T
Tubes
ETK4-1TTR
Tape & Reel
SM-22
Pin Configuration
Pin No.
Function
1
Secondary dot
2
Secondary CT
3
Secondary
4
Primary
5
Primary dot
q
q
q
S 0934 D
Dimensions in ( ) are in mm.
Unless Otherwise Noted: .x = 0.04 (1.00)
.xx = 0.02 (0.50)
.xxx = 0.010 (0.250)
PRI
SEC
Parameter
Maximum
Mean (x) Sigma (
)
Insertion Loss (f
L
- f
U
)
70 - 250 MHz
2.0 dB
1.56 dB
0.007
15 - 600 MHz
3.0 dB
8.0 - 750 MHz
4.0 dB
Amplitude Unbalance
8.0 - 750 MHz
1.0 dB
Phase Unbalance
8.0 - 750 MHz
20
Note: Mean and sigma calculated from average loss @ (f
U
- f
L
)/2 + f
L
.
E-Series RF 4:1 Transformer
ETK4-1T
V3.00
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacific: Tel. +81 (03) 3226-1671
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 (03) 3226-1451
Fax +44 (1344) 300 020
2
Specifications Subject to Change Without Notice.
Absolute Maximum Ratings
INSERTION LOSS vs FREQUENCY
PHASE UNBALANCE vs FREQUENCY
Parameter
Absolute Maximum
RF Power
250 mW
DC Current
30 mA
Operating/Storage Temp.
-30C to +85C
Typical Performance
Over Extended Bandwidth (30 kHz - 3.0 GHz)
AMPLITUDE UNBALANCE vs FREQUENCY
INPUT IMPEDANCE vs FREQUENCY
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.
S-Parameter data available by E-Mail. Send your request to: eurotec@corp.macom.com.
B1
A1
13.0
avgs31
3.0B
13.0
avgs21
3.0A
B1
A1
0.0
pb02
360.0B
0.0
pb01
360.0A
30.0 kHz
freq
3.0 GHz A
A1
5.0
avgab
5.0A
30.0 kHz
freq
3.0 GHz B
YFS= 1.0
avgiprl
B
30.0 kHz
freq
3.0 GHz A
30.0 kHz
freq
3.0 GHz B
30.0 kHz
freq
3.0 GHz A
30.0 kHz
freq
3.0 GHz B
INSERTION LOSS (-3 to -13 dB) vs FREQ (30 kHz to 3 GHz)
PHASE UNBALANCE (0 to 360 deg) vs FREQ (30 kHz to 3 GHz)
AMP UNBALANCE (5 to -5 dB) vs FREQ (30 kHz to 3 GHz)
INPUT IMPEDANCE on SMITH CHART; FREQ (30 kHz to 3 GHz)
B1
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