DC4759J5020AHF
Rev H
Ultra Low Profile 0805
20dB Directional Coupler
Description:
The DC4759J5020AHF is a low cost, low profile sub-miniature high
performance 20 dB directional coupler in an easy to use RoHS compliant,
Halogen Free surface mount package. It is designed for 4700 – 5900MHz
applications including: WiFi and P2P / P2MP applications. The
DC4759J5020AHF is ideal for power detection, signal injection and other
applications where low insertion loss signal monitoring is required. The
DC4759J5020AHF is available on tape and reel for pick and place high
volume manufacturing. All of the Xinger components are constructed from
ceramic filled PTFE composites which possess excellent electrical and
mechanical stability. All parts have been subjected to rigorous
qualification testing and units are 100% RF tested.
Detailed Electrical Specifications:
Features:
ROOM (25˚C)
• 4700 – 5900 MHz
• Mean Coupling 20dB
• 0.58mm Height
Frequency
(MHz)
Profile
Loss
Surface Mountable
Tape & Reel
RoHS Compliant
Halogen Free
-55°C to 140°C
Insertion
loss (dB)
Return Loss
(dB)
Min
Directivity
(dB)
Frequency
Power
Sensitivity
Handling
(dB)
@85oC (watts)
Typ.
Min
Typ.
Max
Max
Min
Typ.
Max
Typ.
Max
Typ.
4900-5500
18.3
19.4
20.6
0.14
0.27
8.3
6.9
15.4
11.0
0.19
0.21
2
4700-5900
18.6
19.7
21.0
0.17
0.32
7.6
6.3
10.3
5.3
0.91
1.02
2
• Ultra Low Insertion
•
•
•
•
•
Mean Coupling
(dB)
* Specifications subject to change without notice.
**Specification based on performance of unit properly installed on microstrip printed circuit boards with 50 Ω nominal impedance.
Outline Drawing:
TOP VIEW
2.04±0.10
SIDE VIEW
BOTTOM VIEW
4x 0.37
0.55±0.06
1
2
3
2x 0.15
1.29±0.10
6x 0.98
Orientation Marker
Denotes Pin Location
Orientation Marker
Denotes Pin Location
Mechanical Outline
-Dimensions are in Millimeters
Pin
1
2
3
4
5
6
Configuration-1
Direct
Isolated
Gnd
Gnd
Coupled
Input
6x
0.22
6
4x 0.65
5
4
6x
0.30
Configuration-2
Input
Coupled
Gnd
Gnd
Isolated
Direct
1
DC4759J5020AHF
Rev H
Typical Performance: 4600 MHz to 6000 MHz (Configuration 1)
Coupling (dB)
0
Directivity (dB)
0
-5
-5
-10
-15
-10
-20
-15
-25
-30
-20
-35
-25
-40
-30
4.6
4.8
5
5.4
5.2
Freq [GHz]
5.6
5.8
6
Return Loss at Input Port (dB)
0
-45
4.6
-5
-10
-10
-15
-15
-20
-20
-25
-25
-30
-30
-35
-35
-40
-40
4.8
5
5.2
5.4
Freq [GHz]
5.6
5.8
6
Return Loss at Isolated Port (dB)
0
-45
4.6
-5
-10
-10
-15
-15
-20
-20
-25
-25
-30
-30
-35
-35
-40
-40
4.8
5
5.2
5.4
Freq [GHz]
5.6
4.8
5.8
6
5.2
5.4
Freq [GHz]
5.6
5.8
6
-45
4.6
5
5.2
5.4
Freq [GHz]
5.6
5.8
6
Return Loss at Coupled Port (dB)
0
-5
-45
4.6
5
Return Loss at Direct Port (dB)
0
-5
-45
4.6
4.8
4.8
5
5.2
5.4
Freq [GHz]
5.6
5.8
6
2
DC4759J5020AHF
Rev H
Insertion Loss (dB)
0
-0.5
-0.5
-1
-1
-1.5
-1.5
-2
-2
-2.5
-2.5
-3
4.6
4.8
5
5.4
5.2
Freq [GHz]
Transmission Loss (dB)
0
5.6
5.8
6
-3
4.6
4.8
5
5.2
5.4
Freq [GHz]
5.6
5.8
6
3
DC4759J5020AHF
Rev H
Wide Band Performance: 0 to 8500MHz (Configuration 1)
Coupling (dB)
0
Directivity (dB)
0
-5
-5
-10
-15
-10
-20
-15
-25
-30
-20
-35
-25
-40
-30
5
4
Freq [GHz]
3
2
1
-45
8
7
6
Return Loss at Input Port (dB)
0
1
-5
-10
-10
-15
-15
-20
-20
-25
-25
-30
-30
-35
-35
-40
-40
3
2
1
8
7
6
5
4
Freq [GHz]
Return Loss at Isolated Port (dB)
0
-45
-5
-5
-10
-15
-15
-20
-20
-25
-25
-30
-30
-35
-35
-40
-40
-45
1
2
3
4
5
Freq [GHz]
6
7
8
-45
6
7
8
Return Loss at Direct Port (dB)
1
2
3
4
5
Freq [GHz]
6
7
8
7
8
Return Loss at Coupled Port (dB)
0
-10
5
4
Freq [GHz]
3
0
-5
-45
2
1
2
3
4
5
Freq [GHz]
6
4
DC4759J5020AHF
Rev H
Insertion Loss (dB)
0
-0.5
-0.5
-1
-1
-1.5
-1.5
-2
-2
-2.5
-2.5
-3
1
2
3
4
5
Freq [GHz]
Transmission Loss (dB)
0
6
7
8
-3
1
2
3
4
5
Freq [GHz]
6
7
8
5
DC4759J5020AHF
Rev H
Definition of Measured Specifications
Parameter
Return Loss
Definition
The impedance match of the coupler to
a 50Ω system. Return Loss is an
alternate means to express VSWR.
Directivity
The power at the isolated port divided
by the power at the coupled port
Insertion Loss
The input power divided by the sum of
the power at the two output ports.
At a given frequency (𝜔𝜔𝑐𝑐 ),
coupling is the input power divided by
the power at the coupled port.
Mean Coupling
Mean coupling is the average value of
the coupling values in the band. N is the
number of frequencies
in the band.
Transmission
Loss
The input power divided by the power at
the direct port
Frequency
sensitivity
The decibel difference between the
maximum in band coupling value and
the minimum in band
coupling value.
Mathematical Representation
Return Loss(dB) = 20log
VSWR + 1
VSWR − 1
Piso
Pcpl
Pin
Insertion Loss(dB) = 10log
Pcpl + Pdirect
Directivity(dB) = 10log
Coupling(dB) = C(ωn ) = 10log
Mean Coupling(dB) =
Pin (ωn )
Pcpl (ωn )
∑𝑁𝑁
𝑛𝑛=1 𝐶𝐶(𝜔𝜔𝑛𝑛 )
𝑁𝑁
Transmission Loss(dB) = 10log
Pin
Pdirect
(Max Coupling (dB) – Min Coupling (dB))/2
*100% RF test is performed on configuration 1 where port 1 is connected to pin 1, port 2 is connected to pin 2, port 3 is connected to pin
5 and port 4 is connected to pin 6.
6
DC4759J5020AHF
Rev H
Mounting Configuration:
In order for Xinger surface mount components to work optimally, the proper impedance transmission lines must
be used to connect to the RF ports. If this condition is not satisfied, insertion loss, Isolation and VSWR may
not meet published specifications.
All of the Xinger components are constructed from organic PTFE based composites which possess excellent
electrical and mechanical stability. Xinger components are compliant to a variety of ROHS and Green
standards and ready for Pb-free soldering processes. Pads are Gold plated with a Nickel barrier.
An example of the PCB footprint used in the testing of these parts is shown below. In specific designs, the
transmission line widths need to be adjusted to the unique dielectric coefficients and thicknesses as well as
varying pick and place equipment tolerances.
.41
.25
Plated thru
holes to
ground
.33
.66
.04
4x Transmission
lines
Plated thru
holes to
ground
Circuit Pattern
Footprint Pad (s)
Solder Resist
Dimensions are in Millimeters
Mounting Footprint
7
DC4759J5020AHF
Rev H
Packaging and Ordering Information:
Parts are available in reel and are packaged per EIA 481-D. Parts are oriented in tape and reel as shown
below. Minimum order quantities are 4000 per reel.
2.00
.25
4.00
1.75
3.50
8.00
1.60
4.00
2.41
.81
Direction of
Part Feed
(Unloading)
Contact us:
rf&s_support@ttm.com
8
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