Preliminary Specifications Low Cost SMT 8dB Bi-Directional Coupler CH20-0035-8G 824 - 960 MHz V1.00 Features ● ● ● ● ● ● ● SO-8 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 PIN 8 .1497-.1574 (3.80-4.00) -B- Orientation mark PIN 1 .1890-.1968 (4.80-5.00) -A- Description .004 (0.10) M/A-COM’s CH20-0035-8G is an IC based monolithic bidirectional coupler in a low cost SOIC-8 plastic package. This 8 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 CH20-0035-8G 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) .050(1.27) BSC. .2284-.2440 (5.80-6.20) .010(0.25) M B M .0099-0.0196 x 45° Chamfer (0.25-0.50) .016-.050 (0.40-1.27) .0075-0.0098 (0.19-0.25) .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 CH20-0035-8G CH20-0035-8G-TR CH20-0035-8G-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 = +25°C Parameter Insertion Loss VSWR Coupling Coupling Flatness Directivity Unit Min. Typ. Max. dB dB dB dB 10 0.3 1.3:1 8 ±2 1.2 15 0.7 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. Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 3 3263 8761 Fax +81 3 3263 8769 ■ 1 Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 Low Cost SMT 8dB Bi-Directional Coupler CH20-0035-8G V1.00 Functional Diagram 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 8 1 RF OUT RF IN 1. Exceeding these limits may cause permanent damage. GND GND Recommended PCB Configuration -8dB .035 TYP. GND .081 TYP. RF IN GND RF OUT .018 DIA. PLATED THRU (12X) ISOLATED COUPLED .244 .050 DIA. PLATED THRU (2X) .030 TYP. COUPLED ISOLATED 4 5 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 @ +25°C INSERTION LOSS vs. FREQUENCY DIRECTIVITY vs. FREQUENCY Pin (4 to 8) – Pin (1 to 4) or( Pin )(1( to 5)) – Pin (5 to 8) 0 INSERTION LOSS (dB) DIRECTIVITY (dB) 0 -5 -10 -15 -20 -25 -30 700 750 800 850 900 950 Pin 1 to 8 or Pin 4 to 5 (Includes loss due to coupling) -0.5 -1 -1.5 -2 700 1000 1050 1100 750 FREQUENCY (MHz) 1.7 COUPLING (dB) VSWR (dB) 1.5 1.4 1.3 1.2 1.1 800 850 900 950 1000 1050 1100 -5 -5.5 -6 -6.5 950 1000 1050 1100 Pin 5 to 8 or Pin 1 to 4 -7 -7.5 -8 -8.5 -9 -9.5 -10 700 750 FREQUENCY (MHz) 2 900 COUPLING vs. FREQUENCY 1.6 750 850 FREQUENCY (MHz) VSWR vs. FREQUENCY 1 700 800 800 850 900 950 1000 1050 1100 FREQUENCY (MHz) The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction. North America: Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 3 3263 8761 Fax +81 3 3263 8769 ■ M/A-COM, Inc. Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020