RFM42 Datasheet, PDF (1/110 Pages) –

RFM42/43
R F M 4 2 / 4 3 ISM TRANSMITTER Mo d u l e
Features
 Frequency Range = 240–930 MHz
 Output Power Range
◆ +8 to +17 dBm (RFM42)
◆ –8 to +13 dBm (RFM43)

Low Power Consumption
◆ (RFM42)
60 mA @ +17 dBm
27 mA @ +11 dBm
◆ (RFM43)
28 mA @ +13 dBm
16 mA @ +1 dBm
 Data Rate = 1 to 128 kbps
 Integrated 32 kHz RC or 32 kHz
XTAL
 Integrated voltage regulators
 Configurable packet structure
 TX 64 byte FIFO
 Low battery detector
 Temperature sensor and 8-bit ADC
 –40 to +85 °C temperature range
 Integrated voltage regulators
 Frequency hopping capability
 FSK, GFSK, and OOK modulation
 Power-on-reset (POR)
 Power Supply = 1.8 to 3.6 V
 Ultra low power shutdown mode
 Wake Up Timer
Applications
■ Remote control
Remote keyless entry
■Home security & alarm
 Remote meter reading
■Telemetry
 Home automation
■Personal data logging
 Industrial control
■Toy control
 Sensor networks
■ Wireless PC peripherals
 Health monitors
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RFM42/43
Description
The RFM42/43 is low cost ISM transmitter module and offers advanced radio features including continuous
frequency coverage from 240–930 MHz with adjustable power output levels of –8 to +13 dBm on the RFM43 and
+8 to +17 dBm on the RFM42. Power adjustments are made in 3 dB steps. The RFM42‘s Industry leading +17
dBm output power ensures extended range and improved link performance.
Additional system features such as an automatic wake-up timer, low battery detector, 64 byte TX FIFO, and
automatic packet handling reduce overall current consumption and allow the use of lower-cost system MCUs. An
integrated temperature sensor, general purpose ADC, power-on-reset (POR), and GPIOs further reduce overall
system cost and size.
The direct digital transmit modulation and automatic PA power ramping ensure precise transmit modulation and
reduced spectral spreading ensuring compliance with FCC and ETSI regulations.
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