Preliminary Specifications
Low Cost SMT 17 dB Bi-Directional Coupler
1700 - 2000 MHz
CH20-0033-17G
V2.00
Features
q
q
q
q
q
q
q
SO-8
PIN 8
.1497-.1574
(3.80-4.00)
-B-
.2284-.2440
(5.80-6.20)
.010(0.25) M B M
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
Orientation
mark
PIN 1
.1890-.1968
(4.80-5.00)
-A-
.004 (0.10)
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.
.0532-.0688
(1.35-1.75)
0°-8°
-C-
.0040-.0098
(0.10-0.25)
.013-.020 TYP.
(0.33-0.51)
.0099-0.0196
x 45° Chamfer
(0.25-0.50)
.016-.050
(0.40-1.27)
.0075-0.0098
(0.19-0.25)
.050(1.27) BSC.
.010(0.25) M C A M B S
8- Lead SOP outline dimensions
Narrow body .150
(All dimensions per JEDEC No. MS-012-AA, Issue C)
Dimensions in ( ) are in mm.
Unless Otherwise Noted: .xxx = ± 0.010 (.xx = ± 0.25)
.xx = ± 0.02 (.x = ±0.5)
Ordering Information
Part Number
CH20-0033-17G
CH20-0033-17G-TR
CH20-0033-17G-RTR
Description
SOIC-8 Lead Plastic Package
Forward Tape and Reel
*
Reverse Tape and Reel
*
* If specific reel size is required, consult factory for part number
assignment.
Typical Electrical Specifications
1
,
T
A
= +25°C,
Parameters
Insertion Loss
VSWR
Coupling
Coupling Flatness
Directivity
Units
dB
-
dB
dB
dB
Min.
-
-
-
-
12
Typ.
0.3
1.3:1
17 ±2
1.2
17
Max.
0.5
1.7:1
-
1.5
-
1. All specifications apply with a 50 ohm source and load impedance.
M/A-COM, Inc.
North America:
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction.
1
Tel. (800) 366-2266
Fax (800) 618-8883
s
Asia/Pacific: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
Low Cost SMT 17 dB Bi-directional Coupler
CH20-0033-17G
V2.00
Absolute Maximum Ratings
1
Parameter
Input Power
Operating Temperature
Storage Temperature
Absolute Maximum
2W CW
-40°C to +85°C
-65°C to +150°C
Functional Diagram
1
RF IN
-17dB
8
COUPLED
1. Exceeding these limits may cause permanent damage.
GND
GND
Recommended PCB Configuration
.035 TYP.
GND
GND
.081
TYP.
RF OUT
RF IN
COUPLED
.018 DIA. PLATED
THRU (12X)
4
5
ISOLATED
.244
.030
TYP.
RF OUT
.050 DIA. PLATED
THRU (2X)
ISOLATED
Note: Pins 2, 3, 6 and 7 must be RF and DC grounded.
.072
TYP.
.244
(Dimensions in Inches)
Circuit Material: FR-4, .016 Thick
Typical Performance
@ +25°C
5
DIRECTIVITY VS. FREQUENCY
COUPLING (dB)
-10
-12
-14
-16
-18
-20
COUPLING VS. FREQUENCY
DIRECTIVITY (dB)
0
-5
-10
-15
-20
-25
1700
1750
1800
1850
1900
1950
2000
1700
1750
1800
1850
1900
1950
2000
FREQUENCY (MHz)
FREQUENCY (MHz)
INSERTION LOSS VS. FREQUENCY
INSERTION LOSS (dB)
0
-0.2
-0.4
-0.6
-0.8
-1
1700
1750
1800
1850
1900
1950
2000
2
1.8
VSWR VS. FREQUENCY
VSWR (dB)
1.6
1.4
1.2
1
1700
1750
1800
1850
1900
1950
2000
FREQUENCY (MHz)
FREQUENCY (MHz)
2
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
Asia/Pacific: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
