Rainbow Electronics RF22 User Manual
Rf22 universal ism band fsk transceiver, Rf22
RF22
Version: 0.1 Date: 12/23/2008
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
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RF22 Universal ISM Band FSK Transceiver
Features
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Frequency range = 240–930 MHz
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Sensitivity = –118dBm
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+20 dBm Max Output Power
Configurable +11 to +20 dBm
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Low Power Consumption
18.5 mA receive
27mA @ +11dBm
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Data Rate = 1 to 128kbps
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Power Supply = 1.8 to 3.6V
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Ultra low power shutdown mode
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Digital
RSSI
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Wake-on-radio
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Auto-frequency calibration (AFC)
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Antenna diversity & TR switch control
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Configurable packet structure
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Preamble
detector
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TX & RX 64 byte FIFOs
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Low battery detector
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Temperature sensor and 8-bit ADC
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–40 to +85
o
C temperature range
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Integrated voltage regulators
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Frequency
hopping
capability
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On-chip crystal tuning
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20-Pin QFN package
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FSK, GFSK, and OOK modulation
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Low
BOM
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Power-on-reset
(POR)
Applications
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Remote
control
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Home security & alarm
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Telemetry
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Personal data logging
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Toy
control
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Tire Pressure monitoring
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Wireless PC peripherals
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Remote
meter
reading
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Remote keyless entry
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Home
automation
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Industrial
control
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Sensor
networks
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Health
monitors
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Tag readers
The RF22 offers advanced radio features including continuous frequency coverage from 240–930 MHz and adjustable output power
of up to +20 dBm. The RF22’s high level of integration offers reduced BOM cost while simplifying the overall system design. The
extremely low receive sensitivity (–118 dBm) coupled with industry leading +20 dBm output power ensures extended range and
improved link performance. Built-in antenna diversity and support for frequency hopping can be used to further extend range and
enhance performance.
Additional system features such as an automatic wake-up timer, low battery detector, 64 byte TX/RX FIFOs, automatic packet
handling, and preamble detection reduce overall current consumption and allow the use of lower-cost system MCUs. An integrated
temperature sensor, general purpose ADC, poweron- reset (POR), and GPIOs further reduce overall system cost and size.
The RF22’s digital receive architecture features a high-performance ADC and DSP based modem which performs demodulation,
filtering, and packet handling for increased performance. This digital architecture simplifies system design while allowing for the use
of lower-end MCUs. 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.