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PDF RCT-433-ASB Data sheet ( Hoja de datos )
| Número de pieza | RCT-433-ASB | |
| Descripción | Low-Cost SAW-stabilized surface mount OOK RF transmitter | |
| Fabricantes | Radiotronix | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RCT-433-ASB (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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Embedding the wireless future..
Typical Applications
• Remote Keyless Entry (RKE)
• Remote Lighting Controls
• On-Site Paging
• Asset Tracking
• Wireless Alarm and Security Systems
• Long Range RFID
• Automated Resource Management
RCT-433-AS / ASB
Low-Cost SAW-stabilized surface mount
OOK RF transmitter
Features
• 315/418/433.92 MHz versions
• Low Cost
• 1.5-12V operation
• 5mA current consumption at 3V
• Small size.
• 0dBm output power at 3V
• 4800 baud operation
Description
RCT-433-AS
RCT-433-ASB
The RCT-433-AS is ideal for remote control
applications where low cost and longer range are
required. The transmitter operates from a 1.5-12V
supply, making it ideal for battery-powered
applications. The transmitter employs a SAW-
stabilized oscillator, ensuring accurate frequency
control for best range performance. Output power
and harmonic emissions are easy to control,
making FCC and ETSI compliance easy. The
manufacturing-friendly SMT style package and low-
cost make the RCT-433-AS suitable for high
volume applications. The RCT-433-ASB is suitable
for IR reflow ovens and hot air soldering.
Ordering Information
Frequency
433.92 MHz
433.92 MHz
Part Number
RCT-433-AS
RCT-433-ASB
Domestic and international orders:
Mouser Electronics 1-800-346-6873 (http://www.mouser.com)
Future Electronics (http://www.futureelectronics.com)
For a Radiotronix Representative in your area please visit www.radiotronix.com and visit our corporate
information page.
-i-
Free Datasheet http://www.Datasheet4U.com
1 page  
RCT-433-AS Low-Cost SAW-stabilized surface mount OOK RF transmitter
© 2001,2002,2003 All Rights Reserved
Detailed Electrical Specifications
Parameter (General)
Operating Voltage
Operating Current
DATA=VCC
Operating Current
DATA=GND
Frequency Accuracy
Center Frequency
Output Power
Baud Rate – NRZ
Symbol Min Typ. Max Units
Vcc 1.5 3.0 12 Volts DC
Icc --- 4.5 --- mA
Icc --- 100 --- uA
TOLfc
Fc
-75 0 +75 Khz
--- 315.0 --- MHz
418.0
433.92
--- 0
dBm
DC --- 4800 BPS
Notes
@3V
@3V
@3V
RCT-315-AS
RCT-418-AS
RCT-433-AS
@3V
Theory of Operation
OOK Modulation
OOK modulation is a binary form of amplitude modulation. When a logical 0 (data line low) is
being sent, the transmitter is off, fully suppressing the carrier. In this state, the transmitter current
is very low, less than 1mA.
When a logical 1 is being sent, the carrier is fully on. In this state, the module current
consumption is at its highest, about 4.5mA with a 3V power supply.
OOK is the modulation method of choice for remote control applications where power
consumption and cost are the primary factors. Because OOK transmitters draw no power when
they transmit a 0, they exhibit significantly better power consumption than FSK transmitters.
OOK data rate is limited by the start-up time of the oscillator. High-Q oscillators which have very
stable center frequencies take longer to start-up than low-Q oscillators. The start-up time of the
oscillator determines the maximum data rate that the transmitter can send.
DESIGN HINT “Using the RCT-433-AS with a microcontroller UART”: Data should be
inverted when using the transmitter with a UART. The normal marking state of a UART is a logic
1, which will cause constant transmission. By inverting the data, the transmitter will be off in a
marking state and on in a spacing state (logical 0), ensuring that the transmitter is on only when
data is being sent. The output of the receiver would also need to be inverted to properly recover
data.
-4-
6/7/2005
Free Datasheet http://www.Datasheet4U.com
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet RCT-433-ASB.PDF ] | |
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