电子工程世界电子工程世界电子工程世界

型号

产品描述

搜索
 

AFS2-458

器件型号:AFS2-458
文件大小:188.6KB,共0页
厂商名称:RADIOMETRIX [Radiometrix Ltd]
厂商官网:http://www.radiometrix.com
下载文档

器件描述

文档预览

AFS2-458器件文档内容

NEW                    Radiometrix                                                    AFS2-458

16 October 2007        Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England
                                Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233

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
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

sales@radiometrix.com  AFS2 - Short Technical Overview                                www.radiometrix.com
User interface

                           Figure 3: AFS2 pin-out and dimension

Pin description

Pin             Name       Function
RF
1               RF GND     RF Ground
2               Aerial     RF connection to aerial (50 )
                RF GND     RF Ground
3
User            Vcc        Regulated +5v supply, at <250mA
1               0V         Supply Ground
2               TXE        Transmit mode enable (active low, 100K pullup to +5v)
3
RF Module       RF GND     RF Ground
1               RF in/out  RF connection to radio module
2               RF GND     RF Ground
3

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 needed, the receive path is bidirectional, and capable of carrying up to
          100mW of power. In this case the radio must be set to transmit, but the AFS2 pin TXE must be left in the
          inactive (high) state.
     4. Following the return of TXE to inactive (high), the AFS2 remains in transmit mode for another 15mS, to allow
          the output of the radio to ramp down, before changing over to receive mode.
     5. This unit requires a regulated +5v rail, during transmit, and during receive.
     6. This version cannot be used with in i1200 modem mode, unless a separate means of driving the TXE pin is
          provided. (see relevant application notes)
     7. This is a 500mW output product. Good grounding (mount onto a groundplane and tack solder all can walls to
          this), good quality aerials, properly mounted, and a low impedence power supply are required if full
          performance is to be reliably obtained. If feasible, we recommend mounting the module, and the board it is on,
          inside a metal enclosure, with the RF cable taken to a bulkhead connector. All signal and power feeds should
          be filtered and/or decoupled.
          Failure to observe these measures can cause modulation distortion ('recirculation' effects) or instability. Also
          be aware of the effect that the strong RF fields generated by this device (and it's aerial) can have upon other
          adjacent circuitry if this is not properly screened, filtered or otherwise protected. Regulators, sensitive
          analogue circuitry, and microprocessors seem especially interference prone.

sales@radiometrix.com      AFS2 - Short Technical Overview                        www.radiometrix.com
Condensed specifications

Frequency                   458MHz (standard)
                            Any 10MHz wide segment within 420-470MHz band
Transmitter
                            500mW +/- 1dB (250mW by special order)
             Output power   15mS after TXE goes high
             TX hold time   <-40dBm
             TX spurii

Receive path loss           <1dB (bi directional)

Supply             voltage  +5V regulated
                   Current  250mA transmit
                            <2mA receive (TXE high or floating)
Operating temperature       -20 to +70 C (Storage -30 to +70 C)
                            33 x 23 x 9 mm
Size                        Compliant with ETSI EN 300 220-3 and EN 301 489-3
                            3 pin 0.1" pitch molex
Spurious radiations         3 pin 0.1" pitch molex
                            3 pin 0.1" pitch molex
Interface    User

             RF Module

             RF

                                     Radiometrix Ltd

                                              Hartcran House
                                             231 Kenton Lane
                            Harrow, Middlesex, HA3 8RP, ENGLAND
                       Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233
                          sales@radiometrix.com, www.radiometrix.com

sales@radiometrix.com       AFS2 - Short Technical Overview                  www.radiometrix.com
This datasheet has been downloaded from:
             www.EEworld.com.cn

                 Free Download
           Daily Updated Database
      100% Free Datasheet Search Site
  100% Free IC Replacement Search Site
     Convenient Electronic Dictionary

               Fast Search System
             www.EEworld.com.cn

                                                 All Datasheets Cannot Be Modified Without Permission
                                                                Copyright Each Manufacturing Company

AFS2-458器件购买:

该厂商的其它器件

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 大学堂 TI培训 Datasheet

北京市海淀区知春路23号集成电路设计园量子银座1305 电话:(010)82350740 邮编:100191

电子工程世界版权所有 京ICP证060456号 京ICP备10001474号 电信业务审批[2006]字第258号函 京公海网安备110108001534 Copyright © 2005-2017 EEWORLD.com.cn, Inc. All rights reserved