11 dB, Bi-Directional Coupler, 10 - 500 MHz CH-138 V4 Features TO-8-2 • Constant Coupling - Within ± 0.5 dB Max • MIL-STD-202 Screening Available Description Bi-Directional couplers offer the ability to couple the power in two directions while maintaining directivity. Pin Configuration Pin No. Function Pin No. Function 1 GND 7 GND 2 B 8 A 3 GND 9 GND 4 GND 10 GND 5 C 11 D 6 GND 12 GND Electrical Specifications1: TA = -55°C to +85°C Parameter Test Conditions Frequency Units Min Typ Max Coupling Input to Output — dB 9.8 10.8 11.8 Coupling Flatness — — dB — — ± 0.5 VSWR All Ports 10 - 500 MHz 25 - 200 MHz Ratio Ratio — — — — 1.8:1 1.5:1 Directivity Both Directions — dB 17 — — Main Line Loss 2 — — dB — — 1.6 Input Power — — Watt — — 1.0 1. All specifications apply with 50 ohm source and load impedance. 2. Includes theoretical power split. This product contains elements protected by United States Patent umber 3,426,298. 1 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. 11 dB, Bi-Directional Coupler, 10 - 500 MHz Functional Diagram CH-138 V4 Ordering Information Part Number Package CH-138 PIN TO-8-2 Typical Performance Curves 2 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.