Low Cost SMT 17dB Bi-Directional
Coupler 824 - 960 MHz
CH20-0032-17G
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
V2.00
Parameter
Unit
Min.
Typ.
Max.
Insertion Loss
dB
-
0.3
0.5
VSWR
-
-
1.3:1
1.6:1
Coupling
dB
-
17 2
-
Coupling Flatness
dB
-
1.2
1.5
Directivity
dB
10
15
-
Typical Electrical Specifications
1
@
T
A
= +25C
Features
Device is Bi-Directional
Small Size and Low Profile
Industry Standard SOIC-8 SMT Plastic Package
Superior Repeatability
Typical Insertion Loss 0.3 dB
Typical Directivity 15 dB
2 Watt Power Handling
Description
M/A-COM's CH20-0032-17G is an IC based monolithic bi-
directional coupler in a low cost SOIC-8 plastic package.
This 17 dB coupler is ideally suited for applications
where power monitoring, small size, low insertion loss,
superior repeatability and low cost are required. Typical
applications include base station switching networks,
power monitoring in handhelds and other communica-
tion applications where size and PCB real estate is a
premium. Available in tape and reel.
The CH20-0032-17G is fabricated using a passive-
integrated circuit process. The process features full chip
passivation for increased performance and reliability.
1. All specifications apply with a 50-ohm source and load impedance.
SO-8
0-8
.0075-0.0098
(0.19-0.25)
.1890-.1968
(4.80-5.00)
.0099-0.0196
x 45 Chamfer
(0.25-0.50)
.2284-.2440
(5.80-6.20)
PIN 8
Orientation
mark
PIN 1
8- Lead SOP outline dimensions
Narrow body .150
(All dimensions per JEDEC No. MS-012-AA, Issue C)
Dimensions in ( ) are in mm.
.1497-.1574
(3.80-4.00)
- B -
- A -
.050(1.27) BSC.
.013-.020 TYP.
(0.33-0.51)
.0040-.0098
(0.10-0.25)
- C -
.0532-.0688
(1.35-1.75)
.016-.050
(0.40-1.27)
.010(0.25) M B M
.010(0.25) M C A M B S
Unless Otherwise Noted: .xxx = 0.010 (.xx = 0.25)
.xx = 0.02 (.x = 0.5)
.004 (0.10)
q
q
q
q
q
q
q
Part Number
Description
CH20-0032-17G
SOIC-8 Lead Plastic Package
CH20-0032-17G-TR
Forward Tape & Reel*
CH20-0032-17G-RTR
Reverse Tape & Reel*
Ordering Information
* If specific reel size is required, consult factory for part number
assignment.
Coming Attractions
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction.
Low Cost SMT 17 dB Bi-Directional Coupler
CH20-0032-17G
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
V2.00
Typical Performance
@ +25C
Functional Diagram
GND
COUPLED
GND
-17dB
1
4
5
8
GND
GND
RF IN
RF OUT
ISOLATED
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
FREQUENCY (MHz)
810
840
870
900
930
960
FREQUENCY (MHz)
FREQUENCY (MHz)
820 840
860
880
900
920
940
960
820
840
860
880
900
920
940
960
820
840
860
880
900
920
940
960
FREQUENCY (MHz)
DIRECTIVITY (
dB)
1.4
1.36
1.32
1.28
1.24
1.2
VSWR (dB)
-0.3
-0.31
-0.32
-0.33
-0.34
-0.35
-0.36
INSERTION
LOSS (dB)
DIRECTIVITY VS. FREQUENCY
VSWR VS. FREQUENCY
INSERTION LOSS VS. FREQUENCY
-15.8
-16
-16.2
-16.4
-16.6
-16.8
-17
-17.2
COUPLING (dB)
COUPLING VS. FREQUENCY
Recommended PCB Configuration
Note: Pins 2, 3, 6, and 7 must be RF and DC grounded.
RF OUT
RF IN
COUPLED
ISOLATED
.018 DIA. PLATED
THRU (12X)
.050 DIA. PLATED
THRU (2X)
.081
TYP.
.030
TYP.
.035 TYP.
.244
.072
TYP.
.244
(Dimensions in Inches)
Circuit Material: FR-4, 0.16 Thick
Parameter
Absolute Maximum
Input Power
2W CW
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
Absolute Maximum Ratings
1
1. Exceeding these limits may cause permanent damage.
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction.
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