AFS2-458

W E N 16 October 2007 Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233 AFS2-458 500mW RF power amplifier module AFS2 amplifier module is intended to increase the transmitted power of a Radiometrix multi channel TR2M transceiver module. It provides transmit and receive paths, and can be simply 'dropped into' the aerial www.DataSheet4U.com connection. The AFS2 may be usable with other 100mW output devices, but no guarantees can be offered. Figure 1: AFS2-458 Figure 2: AFS2 block diagram [email protected] AFS2 - Short Technical Overview www.radiometrix.com User interface www.DataSheet4U.com Figure 3: AFS2 pin-out and dimension Pin description Pin RF 1 2 3 User 1 2 3 RF Module 1 2 3 Name RF GND Aerial RF GND Vcc 0V TXE RF GND RF in/out RF GND Function RF Ground RF connection to aerial (50 Ω) RF Ground Regulated +5v supply, at <250mA Supply Ground Transmit mode enable (active low, 100K pullup to +5v) RF Ground RF connection to radio module RF Ground NOTES: 1. This amplifier expects a 100mW power level to be output from the radio on transmit. 2. The TXE line should be tied to the TR2M TXE input. When this line is asserted (low) the amplifier is turned on (drawing 280-300mA) and the RF switching connects it between the module and the aerial. When it is inactive (high or floating) a low loss path is provided for the rx signals, from aerial to the module. 3. If a low power transmit mode is neede...