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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 passiveintegrated 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 Specifications1, TA = +25C,
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 -40C to +85C -65C to +150C
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 @ +25C
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

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