Rainbow Electronics RA01 - Manual

RA01
Version: 1.0 Date: 10/8/2008
RA01 Universal ISM
Band OOK Receiver
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 1
LNA
DESCRIPTION
HopeRF’s RA01 is a single chip, low power,
multi-channel OOK receiver designed for use in
applications requiring FCC or ETSI conformance for
unlicensed use in the 433, 868 and 915 MHz bands.
Used in conjunction with HopeRF’s transmitters, the
RA01 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 few capacitors are needed for
operation.
The RA01 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 low-IF
approach; therefore, no external components (except
crystal and filtering capacitors) are needed in a typical
application. The RA01 is a complete analog RF and
baseband receiver, including a multi-band PLL
synthesizer with an LNA, down converter mixers,
baseband filters and amplifiers, and demodulator.
The chip dramatically reduces the load on the
microcontroller with integrated digital data processing:
data filtering, clock recovery, data pattern recognition
and integrated FIFO. To minimize the system cost, the
chip can provide a clock signal for the microcontroller,
avoiding the need for two crystals.
BLOCK DIAGRAM
CRYSTAL
OSC PLL
SYNTHESIZER LOW BAT
DETECT
CHANNEL
FILTER
RSSI
GAIN
CONTROL
DETECTOR
DATA SLICER
CONTROL/STATUS
REGISTER BANK RX DATA
FIFO WAKE UP
TIMER POWER ON
RESET DIGITAL
CONTROLER
CLOCK
RECOVERY
RFP
RFN
XTAL
nSEL SCK SDI SDO MODE nIRQ CLK nRES
RSSI
DATA
DCLK
PIN ASSIGNMENT
RA01
Stand alone mode
RA01
FEATURES
• Fully integrated (low BOM, easy design-in)
• No alignment required in production
• Fast settling, programmable, high-resolution PLL
• Fast frequency hopping capability
• Programmable bit rate (up to 40 kbps)
• Direct differential antenna input
• Programmable baseband bandwidth (85 to 340 kHz)
• Analog and digital RSSI outputs
• Data filtering and clock recovery
• RX pattern recognition
• SPI compatible serial control interface
• Readable registers
• Clock and reset signals for microcontroller
• 64 bit RX data FIFO
• Standard 10 MHz crystal reference
• Accurate Wake-up timer
• Low battery detector
• 2.2 to 3.8 V supply voltage
• Low power consumption
• Low standby current (typ. 0.2 μA)
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