R43305 [ETC]
433.920 MHz ASK RADIO DATA RECEIVER; 433.920兆赫ASK无线数据接收器
| 型号： | R43305 |
| 厂家： | 
ETC |
| 描述： | 433.920 MHz ASK RADIO DATA RECEIVER |
| 文件： | 总3页 (文件大小：77K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ELSEMA
433.920MHz ASK Radio Data Receiver , R43305
R43305
433.920 MHz ASK RADIO DATA RECEIVER
Features
• Receives digital data
• Baud rates 300 - 4800bps
• Low cost, small size, low current consumption
Application
• Telecommand Systems
• Security Systems
• Alarms
• Radio Data Communications
• Commercial / Industrial Telemetry
Description
The R43305 is a radio data receiver to receive digital data. Baud rates of 300 to 4800 bps can be received. The low cost, small size, low
current consumption makes it ideal for various applications.
Technical Data
Supply Voltage
4.5 - 5.5 VDC Absolute maximum 6.5VDC.
2.5mA
Current Consumption
Receiver Type
Single Conversion Superheterodyne
Receiving Freq
Oscillation System
Operating Temperature Range
IF Freq
433.920MHz (Other frequencies available on request. Refer to the table below )
VCO with 10ppm Crystal Controlled reference Oscillator
-5 to 50°C
320KHz
Selectivity
-3dB at ±20kHz
Sensitivity
Better than -107dBm or 1µV
Amplitude Shift Keying. (ASK)
300 to 4800 bps with 50% duty cycle
0-5V
Type of Demodulation
Baud Rate
Data Output Level
Frequency Response
150 to 2400 Hz with 50% duty cycle (Other duty cycles
will degrade sensitivity)
Dimension
Weight
39 x 25 x 12mm
15 grams
Usable Transmitter
Antenna
T433 Data Transmitter
50 ohms, 433MHz Antenna
ELSEMA
433.920MHz ASK Radio Data Receiver , R43305
Available Frequencies
SF2
SF3
SF4
SF5
SF6
SF7
SF8
SF9
433.664 MHz
433.408 MHz
433.152 MHz
434.688MHz
434.432 MHz
434.176MHz
433.792 MHz
434.304 MHz
Please quote Correct SF number when ordering transmitters on special frequencies.
Connections
R43305 Data Format
It is important to input the correct data format otherwise the receiver will have a lower sensitivity which will result in a reduced
transmission range.
The R43305 receiver data slicer is set for 50/50-duty cycle, therefore the “data in” should have a 50/50-duty cycle. The 50/50-duty cycle
data can be pulse-width modulated to transmit resets, 0's or 1's. See diagram below :
A 50/50-duty cycle will have an average DC signal resulting in a constant reference for the data slicer. Users should use pulse-width
modulation to transmit data with logic 1's or 0's.
If a different duty cycle is used, for example 66/33 ( Manchester format) the data slicer in the receiver will try to adjust itself to the
average DC signal. Since this average DC signal is changing with different data bits this will result in a constantly changing reference
for the data slicer, resulting in lower sensitivity. See diagram below :
ELSEMA
433.920MHz ASK Radio Data Receiver , R43305
*Only 50/50 duty cycle data is suitable for the T433 transmitter and R43305 receiver.
Manufactured by
Elsema Pty Ltd
3/10 Hume Rd, Smithfield
NSW 2164
Ph: 02 9609 4668
Fax: 02 9725 2663
Website: http://www.elsema.com
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