RFM01 Datasheet, PDF (1/31 Pages) List of Unclassifed Manufacturers – Universal ISM Band FSK Receiver

RFM01 Universal ISM
Band FSK Receiver
DESCRIPTION
Hoperf’ RFM01 is a single module, low power, multi-channel FSK
receiver designed for use in applications requiring FCC or ETSI
conformance for unlicensed use in the 315, 433, 868, and 915 MHz
bands. Used in conjunction with RFM02, Hoperf’ FSK transmitters,
the RFM01 is a flexible, low cost, and highly integrated solution that
does not require production alignments. All required RF functions are
integrated. Only an external crystal and bypass filtering are needed for
operation.
The RFM01 has a completely integrated PLL for easy RF design, and its
rapid settling time allows for fast frequency hopping, bypassing multipath
fading, and interference to achieve robust wireless links. The PLL’s high
resolution allows the usage of multiple channels in any of the bands. The
baseband bandwidth (BW) is programmable to accommodate various
deviation, data rate, and crystal tolerance requirements. The receiver
employs the Zero-IF approach with I/Q demodulation, therefore no external
components (except crystal and decoupling) are needed in a typical
application. The RFM01 is a complete analog RF and baseband receiver
including a multi-band PLL synthesizer with an LNA, I/Q down converter
mixers, baseband filters and amplifiers, and I/Q demodulator.
The Module dramatically reduces the load on the microcontroller
with integrated digital data processing: data filtering, clock recovery, data
pattern recognition and integrated FIFO. The automatic frequency control
(AFC) feature allows using a low accuracy (low cost) crystal. To minimize
the system cost, the chip can provide a clock signal for the microcontroller,
avoiding the need for two crystals.
For simple applications, the receiver supports a standalone operation
mode. This allows complete data receiver operation and control of four
digital outputs based on the incoming data pattern without a
microcontroller. In this mode, 12 or more predefined frequency channels
can be used in any of the four bands. For low power applications, the
device supports low duty-cycle operation based on the internal wake-up
timer.
FUNCTIONAL BLOCK DIAGRAM
RFM01
FEATURES
• Fully integrated (low BOM, easy design-in)
• No alignment required in production
• Fast settling, programmable, high-resolution PLL
• Fast frequency hopping capability
• High bit rate (up to 115.2 kbps in digital mode and 256 kbps
in analog mode)
• Direct differential antenna input
• Programmable baseband bandwidth (67 to 400 kHz)
• Analog and digital RSSI outputs
• Automatic frequency control (AFC)
• Data quality detection (DQD)
• Internal data filtering and clock recovery
• RX pattern recognition
• SPI compatible serial control interface
• Clock and reset signals for microcontroller
• 16 bit RX data FIFO
• Standalone operation mode without microcontroller
• Low power duty-cycle mode (less than 0.5 mA average
supply current)
• Standard 10 MHz crystal reference with in circuit calibration
• Alternative OOK support
• Wake-up timer
• Low battery detector
• 2.2 to 5.4 V supply voltage
• Low power consumption (~9 mA in low bands)
• Low standby current (0.3 µA)
• Compact 16-pin TSSOP package
TYPICAL APPLICATIONS
• Remote control
• Home security and alarm
• Wireless keyboard/mouse and other PC peripherals
• Toy control
• Remote keyless entry
• Tire pressure monitoring
• Telemetry
• Personal/patient data logging
• Remote automatic meter reading
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