参数资料
型号: TXM-315-LC_
厂商: Linx Technologies Inc
文件页数: 18/40页
文件大小: 0K
描述: TRANSMITTER RF 315MHZ SMT
产品变化通告: Internal Componet Change 19/Jul/2010
标准包装: 50
系列: LC
频率: 315MHz
应用: ISM,RKE,安全警报与火警
调制或协议: ASK,FSK
数据传输率 - 最大: 5 kbps
功率 - 输出: -4dBm ~ 4dBm
电流 - 传输: 3mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
电源电压: 2.7 V ~ 5.2 V
工作温度: -30°C ~ 70°C
封装/外壳: 表面安装
包装: 管件
Typical Applications
The LC Series transmitter is ideal for the transmission of remote control /
command data. One of the easiest way to transmit on / off data or switch
closures is to use an 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 figure
below shows an example using the Linx MS Series encoder.
750
1
2
3
4
GND GND
DATA VCC
GND GND
LADJ/GND ANT
8
7
6
5
0
0
TXM-xxx-LC
OPEN
220
100k
100k
1
2
3
4
5
6
7
8
9
10
D6
D7
SEL_BAUD0
SEL_BAUD1
GND
GND
GND
TX_CNTL
DATA_OUT
MODE_IND
D5
D4
D3
D2
VCC
VCC
D1
D0
SEND
CREATE_ADDR
20
19
18
17
16
1 5
14
13
12
11
100k
100k
100k
100k
100k
100k
220
100k
LICAL-ENC-MS001
Figure 16: Typical Remote Control Example
This circuit uses the LC Series transmitter and the MS Series encoder to
transmit button presses. The MS Series has eight data lines, which are
connected to buttons that will pull the line high when pressed. When not
used, the lines are pulled low by 100k-ohm resistors. The encoder will
begin a transmission only when the SEND line is taken high. Diodes are
used to pull this line high when any data line is pulled high while isolating
the data lines from each other.
The MS Series Encoder Data Guide explains this circuit and the many
features of the encoder in detail, so please refer to that document for more
information.
A 750-ohm resistor is used on the LADJ line of the transmitter to reduce
the output power of the transmitter. This is appropriate for some antennas,
but may need to be adjusted depending on the design. Typically, a
– 14 –
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