Low Cost SMT 17dB Bi-Directional
Coming Attractions
Coupler 824 - 960 MHz
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 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.
SO-8
.004 (0.10)
CH20-0032-17G
PIN 8
.1497-.1574
(3.80-4.00)
Orientation
mark
PIN 1
.050(1.27) BSC.
.1890-.1968
(4.80-5.00)
- A -
8- Lead SOP outline dimensions
(All dimensions per JEDEC No. MS-012-AA, Issue C)
Unless Otherwise Noted: .xxx = ± 0.010 (.xx = ± 0.25)
Dimensions in ( ) are in mm.
- B -
.0532-.0688
(1.35-1.75)
- C -
.0040-.0098
(0.10-0.25)
.013-.020 TYP.
(0.33-0.51)
.010(0.25) M C A M B S
Narrow body .150
.2284-.2440
(5.80-6.20)
.010(0.25) M B M
.0099-0.0196
x 45° Chamfer
(0.25-0.50)
0°-8°
.016-.050
(0.40-1.27)
.xx = ± 0.02 (.x = ±0.5)
V2.00
.0075-0.0098
(0.19-0.25)
The CH20-0032-17G is fabricated using a passive-
Ordering Information
integrated circuit process. The process features full chip
passivation for increased performance and reliability.
Typical Electrical Specifications1@ T
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 -
1. All specifications apply with a 50-ohm source and load impedance.
= +25°C
A
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*
* If specific reel size is required, consult factory for part number
assignment.
M/A-COM, Inc.
North America: Tel. (800) 366-2266 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 ■ Europe: Tel. +44 (1344) 869 595
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction.
Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020
1
Low Cost SMT 17 dB Bi-Directional Coupler CH20-0032-17G
V2.00
Absolute Maximum Ratings
1
Parameter Absolute Maximum
Input Power 2W CW
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
1. Exceeding these limits may cause permanent damage.
Recommended PCB Configuration
.035TYP.
.081
.244
TYP.
.030
TYP.
RF IN
RF OUT
.072
TYP.
.244
(Dimensions in Inches)
Circuit Material: FR-4, 0.16 Thick
COUPLED
ISOLATED
.018 DIA. PLATED
THRU (12X)
.050 DIA. PLATED
THRU (2X)
Functional Diagram
1
RF IN
GND
GND
RF OUT
4
Note: Pins 2, 3, 6, and 7 must be RF and DC grounded.
-17dB
8
COUPLED
GND
GND
ISOLATED
5
Typical Performance @ +25°C
DIRECTIVITY VS. FREQUENCY
0
-2
-4
-6
-8
-10
-12
DIRECTIVITY (dB)
-14
-16
-18
820 840 860 880 900 920 940 960
FREQUENCY (MHz)
VSWR VS. FREQUENCY
1.4
1.36
1.32
1.28
VSWR (dB)
1.24
1.2
810 840 870 900 930 960
FREQUENCY (MHz)
INSERTION LOSS VS. FREQUENCY
-0.3
-0.31
-0.32
-0.33
-0.34
-0.35
INSERTION LOSS (dB)
-0.36
820 840 860 880 900 920 940 960
FREQUENCY (MHz)
COUPLING VS. FREQUENCY
-15.8
-16
-16.2
-16.4
-16.6
-16.8
COUPLING (dB)
-17
-17.2
820 840 860 880 900 920 940 960
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 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 ■ Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020