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| 型号： | RXM-418-LR_ |
| 厂商： | Linx Technologies Inc |
| 文件页数： | 14/40页 |
| 文件大小： | 0K |
| 描述： | RECEIVER 418MHZ LR SERIES |
| 标准包装： | 25 |
| 系列： | LR |
| 频率： | 418MHz |
| 灵敏度： | -112dBm |
| 数据传输率 - 最大： | 10 kbps |
| 调制或协议： | ASK，OOK |
| 应用： | ISM，车库门开启器，RKE |
| 电流 - 接收： | 5mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 特点： | 远程 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 70°C |
| 封装/外壳： | 16-SMD 模块 |
| 包装： | 管件 |
| 其它名称： | RXM-418-LR RXM-418-LR-S |
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Theory of Operation
The LR receiver is designed to
recover data sent by an AM or
Carrier-Present Carrier-Absent
Data
(CPCA) transmitter, also referred to
as CW or On-Off Keying (OOK). This
type of modulation represents a logic Carrier
low ‘0’ by the absence of a carrier
and a logic high ‘1’ by the presence
Figure 13: CPCA (AM) Modulation
of a carrier. This modulation method affords numerous benefits. The two
most important are: 1) cost-effectiveness due to design simplicity and 2)
higher allowable output power and thus greater range in countries (such as
the U.S.) that average output power measurements over time. Please refer
to Linx Application Note AN-00130 for a further discussion of modulation
techniques.
The LR receiver utilizes an advanced single-conversion superheterodyne
architecture. Transmitted signals enter the module through a 50 Ω RF port
intended for single-ended connection to an external antenna. RF signals
entering the antenna are filtered and then amplified by an NMOS cascode
Low Noise Amplifier (LNA). The filtered, amplified signal is then down-
converted to a 10.7MHz Intermediate Frequency (IF) by mixing it with a
low-side Local Oscillator (LO). The LO frequency is generated by a Voltage
Controlled Oscillator (VCO) locked by a Phase-Locked Loop (PLL) frequen-
cy synthesizer that utilizes a precision crystal reference. The mixer stage
incorporates a pair of double-balanced mixers and a unique image rejection
circuit. This circuit, along with the high IF frequency and ceramic IF filters,
reduces susceptibility to interference. The IF frequency is further amplified,
filtered, and demodulated to recover the baseband signal originally trans-
mitted. The baseband signal is squared by a data slicer and output to the
DATA pin. The architecture and quality of the components utilized in the LR
module enable it to outperform many far more expensive receiver products.
– 10 –
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| RXM-418-LR_ | 功能描述:RECEIVER 418MHZ LR SERIES RoHS:是 类别:RF/IF 和 RFID >> RF 接收器 系列:LR 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 |
| RXM-418-RM | 功能描述:RECEIVER RF 418MHZ RoHS:否 类别:RF/IF 和 RFID >> RF 接收器 系列:RM 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 |
| RXM430-408 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RXM-433-LC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LC SERIES TRANSMITTER MODULE |
| RXM-433-LC-P | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LC SERIES RECEIVER MODULE DATA |
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