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| 型号： | TRM-433-LT |
| 厂商： | Linx Technologies Inc |
| 文件页数： | 24/44页 |
| 文件大小： | 0K |
| 描述： | TRANSCEIVER RF 433MHZ LT SERIES |
| 产品目录绘图： | TRM-433-LT Top TRM-433-LT Side |
| 特色产品： | LT Series Long-Range RF Transceiver Modules |
| 标准包装： | 34 |
| 系列： | LT |
| 频率： | 433MHz |
| 数据传输率 - 最大： | 10kbps |
| 调制或协议： | AM，OOK |
| 应用： | 双向传呼，ISM，机器人，遥测 |
| 功率 - 输出： | 10dBm |
| 灵敏度： | -112dBm |
| 电源电压： | 2.1 V ~ 3.6 V |
| 电流 - 接收： | 6.1mA |
| 电流 - 传输： | 12mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 表面安装 |
| 包装： | 管件 |
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Typical Applications
The LT Series transceiver is ideal for the wireless transfer of serial data,
control, or command data. The transceiver does not perform any encod-
ing or decoding of the data, so the designer has a great deal of flexibility in
the design of a protocol for the system. The data source and destination
can be any device that uses asynchronous serial data such as a PC or a
microcontroller. If the application is for remote control or command, then
the easiest solution is to use a remote control encoder and decoder. These
ICs provide a number of data lines that can be connected to switches or
buttons or even a microcontroller. When a line is taken high on the encoder,
a corresponding line will go high on the decoder as long as the address
matches. The Linx MT Series transcoder is an encoder and decoder in
a single chip which allows bidirectional control and confirmation using a
transceiver. Figure 24 shows a circuit using the Linx LICAL-TRC-MT
transcoder.
1
RF
LADJ
12
750 ohm
VCC
VCC
BUZZER
GND
GND
2
3
4
5
6
GND
NC
RSSI
A REF
ANALOG
TRM-XXX-LT
VCC
GND
PDN
T/R SEL
DATA
11
10
9
8
7
VCC
GND
GND
VCC
GND
GND
100k
100K
200 ohm
VCC
GND
GND
VCC
D6
D7
CRT/LRN
ENC SEL
SER IO
CONFIRM
T/R PDN
T/R SEL
T/R DATA
LICAL-TRC-MT
GND
D5
D4
D3
LATCH
BAUD SEL
MODE IND
D2
D1
D0
GND
GND 200 ohm
GND
GND 200 ohm
GND
100k
GND
GND
VCC
GND
VCC
Figure 24: LT Transceiver and MT Transcoder
100k
GND
This circuit uses the LT Series transceiver and the MT Series transcoder to
transmit and receive button presses. The MT Series has eight data lines,
which can be set as inputs and connected to buttons that will pull the line
high when pressed, or set as outputs to activate external circuitry. When
not used, the lines are pulled low by 100k-ohm resistors. The transcoder
will begin a transmission when any of the input data lines are taken high.
When a valid transmission is received, the transcoder will activate the
appropriate output data lines and then send a confirmation back to the
originating transcoder. When the confirmation is received, the originating
transcoder will activate its CONFIRM line. In this example, this will turn on
an LED for visual indication. The transcoder will automatically control the
power to the transceiver via the PDN line and the transmit / receive state
via the T/R_SEL line.
The MT Series transcoder data guide explains this circuit and the many
features of the transcoder in detail, so please refer to that document for
more information.
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