rf 433mhz weather station module long distance transmit

General Description

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VT-CC1120PL-433M is based on RF Transceiver CC1120 of TI Chipcon,CC1120 is fully integrated single-chip radio transceiver designed for high performance at very low power and low voltage operation in cost effective wireless systems. Added PA, LNA circuit, enhanced output power and sensitivity.The module integrated many RF functions thus you can use it conveniently and reducing your development time.

Features

433MHz wireless transceiver, Frequency bands at 169M/868M/915M/950MHz be customized

Programmable baseband modulator with 2-FSK, 2-GFSK, 4-FSK,4-GFSK,MSK,OOK/ASK

3.3V , max power +26 dBm

Transmit distance reached 5000 meters, and sensitivity reached -125dBm when setting is 1.2kbps, DEV=4KHz, RX BW=25KHz

Powerful signal processor, deal with strong signal very clear.

Programmable data rate to 200Kbps

Low power consumption and operating supply voltage:2.0~3.6V DC

Point to point and point to multi-point communication.

Support carrier wave and digital RSSI output.

Separate 128-byte RX and TX FIFOs

High stability and industrial reliability

Small dimension:23.05mm×15.06mm×1.8 mm

Applications

Wireless Metering and Wireless Smart Grid (AMR and AMI)

Logistics Tracking System, Warehouse patrol, Electronic label

Industrial monitoring and control

AMR – Automatic Meter Reading

Home and building automation

Consumer Electronics products of wireless control

Wireless alarm and security systems

Wireless sensor networks

General Characteristics

Test operating conditions:Ta=25°C,VCC=3.3V if nothing else stated.

Parameter Type Condition/Note

Operating supply voltage DC 2.0~3.6V

Frequency range 410-480MHz Programmable

Frequency accuracy ±10ppm

Modulation format 2-FSK/4-FSK/2-GFSK/4-FSK/MSK/OOK Programmable

Transmit power MAX:26dBm(3.3V) Programmable

TX current consumption ≤250mA

Receiver sensitivity -125dBm(1.2kbps DEV=4KHz RX BW=25KHz) Refer to data rate

RX current consumption ≤25mA

Sleep State current consumption <1uA

Transmit distance 5000M

Antenna impedance 50ohm

Operating voltage 3.0~3.6V

Operating temperature -20~+75 °C

Storage temperature range -40~+125°C

Dimension 23.05mm×15.06mm×1.8 mm See more in PCB description

Note:

1.The module transmission data rate will affect Transmission distance ,the higher the data rate , the closer the distance, and the lower the receiving sensitivity.

2.The supply voltage to the module will affect TX power, in the operating supply voltage range, the lower the voltage, the lower the TX power.

3.The module central frequency will change as the operating temperature change, use it under suggest temperature, the module can work well.

4.The antenna will strongly affect the communication distance, please select matched antenna and connect it correctly.

5.The module mount will affect the communication distance.

PCB Description

Pin Configuration

Pin name Pin type Description

RESET_N Digital in Reset; low level valid

GDIO3 Digital in/out Digital I/O, register configuration

GDIO2 Digital in/out Digital I/O, register configuration

SI Digital In Digital in (SPI)

SCLK Digital In Time input (SPI)

SO/GPIO1 Digital In/out Digital output (SPI) or general digital In/out port

GDIO0 Digital In/out Digital I/O, register configuration

CSN Digital I/O Module select (SPI), low level valid

RE Status control RX=0,TX=1,SLEEP=0

TE Status control RX=1,TX=0,SLEEP=0

GND ground

ANT Antenna port Impedance 50 ohm

3.3V Work power DC 3.0-3.6V

VDS Power amplifier Power amplifier, default short circuit

Circuit Interface

Note:

The pin sequence above are not the actual pin sequence refer pin description. SPI, I/O interface should connect with the MCU’s I/O pin in order to archive your functions. The circuit must be take ESD protect to prevent damage module. Good RF performance determines on the module position, ground and antenna fixing. Any question about the module please contact with the FAE engineer.

Configuration Registers

The configuration of CC1120 can be done with software SmartRF Studio7. Complete descriptions of the registers are given in the CC1120 datasheet. We can provide evaluation board and demo code to the customer to develop and evaluate the module’s capability.