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Low Cost SMT 17dB Bi-Directional Coupler 824 - 960 MHz
Features
q q q q q q q
CH20-0032-17G
V2.00
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 15 dB 2 Watt Power Handling
Orientation mark PIN 1 .1890-.1968 (4.80-5.00) -A.004 (0.10)
.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)
Description
M/A-COM's CH20-0032-17G is an IC based monolithic bidirectional 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 communication applications where size and PCB real estate is a premium. Available in tape and reel. The CH20-0032-17G is fabricated using a passiveintegrated circuit process. The process features full chip passivation for increased performance and reliability.
.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 CH20-0032-17G CH20-0032-17G-TR CH20-0032-17G-RTR Description SOIC-8 Lead Plastic Package Forward Tape & Reel* Reverse Tape & Reel*
* If specific reel size is required, consult factory for part number assignment.
Typical Electrical Specifications1 @ TA = +25C
Parameter Insertion Loss VSWR Coupling Coupling Flatness Directivity Unit dB dB dB dB Min. 10 Typ. 0.3 1.3:1 17 2 1.2 15 Max. 0.5 1.6:1 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 Absolute Maximum Ratings 1
Parameter Input Power Operating Temperature Storage Temperature Absolute Maximum 2W CW -40C to +85C -65C to +150C
CH20-0032-17G
V2.00
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 IN
COUPLED .018 DIA. PLATED THRU (12X)
RF OUT 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, 0.16 Thick
Typical Performance @ +25C
0 -2 -4 -6 -8 -10 -12 -14 -16 -18
INSERTION LOSS (dB)
DIRECTIVITY VS. FREQUENCY
DIRECTIVITY (dB)
INSERTION LOSS VS. FREQUENCY
-0.3 -0.31 -0.32 -0.33 -0.34 -0.35 -0.36 820 840 860 880 900 920 940 960
820
840
860
880
900
920
940
960
FREQUENCY (MHz)
FREQUENCY (MHz)
VSWR VS. FREQUENCY
1.4 1.36 1.32 1.28 1.24 1.2 810 840 870 900 930 960
-15.8 -16
COUPLING VS. FREQUENCY
COUPLING (dB)
VSWR (dB)
-16.2 -16.4 -16.6 -16.8 -17 -17.2 820 840 860 880 900 920 940 960
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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