Low Cost SMT 17 dB Bi-Directional Coupler
1700 - 2000 MHz
CH20-0033-17G
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
Parameters
Units
Min.
Typ.
Max.
Insertion Loss
dB
-
0.3
0.5
VSWR
-
-
1.3:1
1.7:1
Coupling
dB
-
17 2
-
Coupling Flatness
dB
-
1.2
1.5
Directivity
dB
12
17
-
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 17 dB
2 Watt Power Handling
Description
M/A-COM's CH20-0033-17G 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 personal
communication systems and other communication
applications where size and PCB real estate is a
premium. Available in tape and reel.
The CH20-0033-17G 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
CH20-0033-17G
SOIC-8 Lead Plastic Package
CH20-0033-17G-TR
Forward Tape and Reel
*
CH20-0033-17G-RTR
Reverse Tape and Reel
*
Ordering Information
* If specific reel size is required, consult factory for part number
assignment.
Preliminary Specifications
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction.
Low Cost SMT 17 dB Bi-directional Coupler
CH20-0033-17G
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
5
0
-5
-10
-15
-20
-25
1700
1750
1800
1850
1900
1950
2000
DIRECTIVITY (
d
B)
FREQUENCY (MHz)
DIRECTIVITY VS. FREQUENCY
-10
-12
-14
-16
-18
-20
1700
1750
1800
1850
1900
1950
2000
COUPLING (
dB)
FREQUENCY (MHz)
COUPLING VS. FREQUENCY
Functional Diagram
GND
COUPLED
GND
-17dB
1
4
5
8
GND
GND
RF IN
RF OUT
ISOLATED
0
-0.2
-0.4
-0.6
-0.8
-1
1700
1750
1800
1850
1900
1950
2000
INSERTION LOSS (
d
B)
FREQUENCY (MHz)
INSERTION LOSS VS. FREQUENCY
2
1.8
1.6
1.4
1.2
1
1700
1750
1800
1850
1900
1950
2000
VSWR (dB)
FREQUENCY (MHz)
VSWR VS. FREQUENCY
Recommended PCB Configuration
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, .016 Thick
Note: Pins 2, 3, 6 and 7 must be RF and DC grounded.
Typical Performance
@ +25C
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.
PDF 
ZIP