- 您现在的位置：买卖IC网 > PDF目录18777 > RXM-900-HP3-SPS (Linx Technologies Inc)RECEIVER RF 902-928MHZ 8P/100S PDF资料下载
参数资料
| 型号： | RXM-900-HP3-SPS |
| 厂商： | Linx Technologies Inc |
| 文件页数： | 5/13页 |
| 文件大小： | 0K |
| 描述： | RECEIVER RF 902-928MHZ 8P/100S |
| 产品变化通告： | Internal Component Change 25/Aug/2011 |
| 标准包装： | 10 |
| 系列： | HP3 |
| 频率： | 902MHz ~ 928MHz |
| 灵敏度： | -100dBm |
| 数据传输率 - 最大： | 56 kbps |
| 调制或协议： | FM，FSK |
| 应用： | 家庭/工业自动化，远程访问，安全警报 |
| 电流 - 接收： | 18mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 特点： | 多通道，模拟和数字数据 |
| 电源电压： | 2.8 V ~ 13 V |
| 工作温度： | -30°C ~ 85°C |
| 封装/外壳： | 18-SMD 模块 |
| 供应商设备封装： | 18-SIP |
| 包装： | 管件 |
| 其它名称： | Q3400415 |
THE DATA OUTPUT
The DATA line outputs recovered digital data. It is an open collector output with
an internal 4.7k Ω pull-up. When an RF transmission is not present, or when the
TIMING CONSIDERATIONS
There are four major timing considerations to be aware of when designing with
the HP3 Series receiver. These are shown in the table below.
received signal strength is too low to ensure proper demodulation, the data
output is squelched continuous high. This feature supports direct operation with
UARTs, which require their input to be continuously high. An HP3 transmitter and
receiver can be directly connected between two UARTs without the need for
buffering or logical inversion. It should be noted that the squelch level is set just
Parameter
T1
T2
T3
T4
Description
Time between DATA output transitions
Channel change time (time to valid data)
Receiver turn-on time via PDN
Receiver turn-on time via V CC
Max.
20.0mS
1.5mS
3.0mS
7.0mS
over the receiver’s internal noise threshold. Any external RF activity above that
threshold will “break squelch” and produce hashing on the line. While the DATA
line will be reliably squelched in low-noise environments, the designer should
always plan for the potential of hashing.
AUDIO OUTPUT
The HP3 Series is optimized for the transmission of serial data; however, it can
also be used very effectively to send a variety of analog signals, including audio.
The ability of the HP3 to send combinations of audio and data opens new areas
of opportunity for creative design.
The analog output of the AUDIO line is valid from 50 Hz to 28 kHz, providing an
AC signal of about 1V peak-to-peak. This is a high impedance output and not
suitable for directly driving low-impedance loads, such as a speaker. In
applications where a low impedance load is to be driven, a buffer circuit should
always be used. For example, in the case of a speaker, a simple op-amp circuit
such as the one shown below can be used to act as an impedance converter.
VCC
T1 is the maximum amount of time that can elapse without a data transition. Data
must always be considered in both the analog and the digital domain. Because
the data stream is asynchronous and no particular format is imposed, it is
possible for the data to meet the receiver’s data rate requirement yet violate the
analog frequency requirements. For example, if a 255 (0FF hex) were sent
continuously, the receiver would view the data as a DC level. It would hold that
level until a transition was required to meet the minimum frequency specification.
If no transition occurred, data integrity could not be guaranteed. While no
particular structure or balancing requirement is imposed, the designer must
ensure that both analog and digital signals meet the transition specification.
T2 is the worst-case time needed for a powered-up module to switch between
channels after a valid channel selection. This time does not include external
overhead for loading a desired channel in the serial channel-selection mode.
T3 is the time to receiver readiness from the PDN line going high. Receiver
readiness is determined by valid data on the DATA line. This assumes an
incoming data stream and the presence of stable supply on V CC .
T4 is the time to receiver readiness from the application of V CC . Receiver
readiness is determined by valid data on the DATA line. This assumes an
HP Analog Out
1uF
10k
2
3
–
+
6
4
5
LM386
250uF
0.05uF
10 ohm
incoming data stream and the PDN line is high or open.
RECEIVING DATA
Once an RF link has been established, the challenge becomes how to effectively
transfer data across it. While a properly designed RF link provides reliable data
transfer under most conditions, there are still distinct differences from a wired link
that must be addressed. Since the modules do not incorporate internal encoding
or decoding, the user has tremendous flexibility in how data is handled.
Figure 12: Audio Buffer Amplifier
The transmitter’s modulation voltage is critical, since it determines the carrier
deviation and distortion. The transmitter input level should be adjusted to
achieve the optimum results for your application in your circuit. Please refer to
the transmitter data guide for full details.
When used for audio, the analog output of the receiver should be filtered and
buffered to obtain maximum sound quality. For voice, a 3-4kHz low-pass filter is
often employed. For broader-range sources, such as music, a 12-17kHz cutoff
may be more appropriate. In applications that require high-quality audio, a
compandor may be used to further improve SNR. The HP3 is capable of
providing audio quality comparable to a radio or intercom. For applications where
true high fidelity audio is required, the HP3 will probably not be the best choice,
and a device optimized for audio should be utilized.
Page 8
It is important to separate the types of transmissions that are technically possible
from those that are legally allowed in the country of operation. Application Notes
AN-00126, AN-00140 and Part 15, Section 249 of the FCC rules should be
reviewed for details on acceptable transmission content in the U.S.
If you want to transfer simple control or status signals (such as button presses)
and your product does not have a microprocessor or you wish to avoid protocol
development, consider using an encoder / decoder IC set. These chips are
available from several manufacturers, including Linx. They take care of all
encoding and decoding functions and provide a number of data lines to which
switches can be directly connected. Address bits are usually provided for
security and to allow the addressing of multiple receivers independently. These
ICs are an excellent way to bring basic remote control products to market quickly
and inexpensively. It is also a simple task to interface with inexpensive
microprocessors or one of many IR, remote control, DTMF, or modem ICs.
Page 9
相关PDF资料 |
PDF描述 |
|---|---|
| M50100SB1600 | MODULE POWER 100A 1600V BRIDGE |
| M50100TB400 | MODULE POWER 100A 400V 3PH BRDG |
| M5060TB1600 | MODULE POWER 60A 1600V 3PH BRDG |
| EKMB1301113K | SENSOR PIR STD TYPE 6UA |
| M50100SB1000 | MODULE POWER 100A 1000V BRIDGE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RXM-916-ES | 功能描述:射频模块 RF Receiver 916MHz RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm |
| RXM-916-ES_ | 功能描述:RECEIVER RF 916MHZ 16PIN SMD RoHS:是 类别:RF/IF 和 RFID >> RF 接收器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS 产品变化通告:Product Discontinuation 09/Jan/2012 标准包装:50 系列:* 频率:850MHz ~ 2.175GHz 灵敏度:- 数据传输率 - 最大:- 调制或协议:- 应用:* 电流 - 接收:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 特点:- 电源电压:4.75 V ~ 5.25 V 工作温度:0°C ~ 85°C 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| RX-MFR-RNLK-00 | 功能描述:KIT EVAL S4100 MULTI-FUNC READER RoHS:否 类别:RF/IF 和 RFID >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:用于 200/300 系列的欧盟开发套件 适用于相关产品:Zensys RF 模块 所含物品:开发板，模块，编程器，软件，线缆，电源 其它名称:703-1019Q3225667 |
| RXM-GNSS-GM-B | 制造商:Linx Technologies Inc 功能描述:GNSS RX MODULE GM SERIES 制造商:Linx Technologies Inc 功能描述:GM Series Global 3 - 4.3 V SMT -161 db 57.6 kbit/s GNSS Receiver Module 制造商:Linx Technologies Inc 功能描述:GPS Modules GM Series Receiver GNSS Module Bulk 制造商:LINX TECHNOLOGIES 功能描述:GM Series Global 3 - 4.3 V SMT -161 db 57.6 kbit/s GNSS Receiver Module |
| RXM-GNSS-GM-T | 制造商:Linx Technologies Inc 功能描述:GNSS RX MODULE GM SERIES |
发布紧急采购，3分钟左右您将得到回复。