ADF7022 Datasheet, PDF (1/2 Pages) Analog Devices – io-homecontrol-Compliant RF Transceiver

io-homecontrol-Compliant RF Transceiver
ADF7022
FEATURES
Very low power consumption
Very low power, high performance, low IF transceiver
13 mA in receive mode
Fully integrated io-homecontrol®-compliant protocol covering
24.1 mA in transmit mode (10 dBm output)
Layer 1, Layer 2, and time critical elements of Layer 3
0.65 μA in RCO wake mode
Media access
1.25 μA in XTO wake mode (32 kHz oscillator active)
Master, slave, and beacon modes supported
65 μA average current in low power mode (with 2 ms scan
Automatic io-homecontrol channel scan
Automatic CRC, preamble, start byte insertion/check
time every 0.5 seconds)
Receiver sensitivity (10^−3 BER)
UART data encoding as per io-homecontrol
−107.5 dBm at 38.4 kbps FSK, 20 kHz deviation
Smart preamble detect/packet sniffing
Output power programmable up to 13.5 dBm
Automatic address filtering
Automatic PA ramping
Low power modes
Dual PAs offer Tx antenna diversity
Autonomous packet handling without intervention of host
Very few external components
microprocessor thus significantly increasing battery life
Integrated PLL loop filter
1-way and 2-way communication supported
Integrated Rx/Tx switch
Automatic wake-up timer
Integrated battery monitor
32-bit hardware timer, 16-bit firmware timer (48 bits total)
On-chip 8-bit ADC and temperature sensor
Uses either
Efficient and flexible SPI control interface
External 32 kHz crystal
4 lines available for low cost microcontroller interface
Internal 32 kHz RC oscillator
Flexible Tx and Rx data buffers
Patented fast settling automatic frequency control (AFC)
Efficient burst mode register access
Fully integrated image rejection calibration (patent pending)
1.8 V to 3.6 V power supply
Digital RSSI
5 mm × 5 mm, 32-lead LFCSP package
Operating frequencies
Channel 1: 868.25 MHz
Channel 2: 868.95 MHz
Channel 3: 869.85 MHz
APPLICATIONS
Home automation
Process and building control
FUNCTIONAL BLOCK DIAGRAM
ADCIN_ATB3
RFIO_1P
RFIO_1N
RFO2
LNA
PA
PA
DIVIDER
PA RAMP
PROFILE
ADF7022
RSSI/
LOGAMP
8-BIT
ADC
FSK
ASK
DEMOD
CDR
AFC
AGC
8-BIT RISC
PROCESSOR
LOOP
FILTER
CHARGE
PUMP
PFD
DIVIDER
f_DEV
4kB ROM
IO-H/C
MAC
2kB RAM
256-BYTE
PACKET
RAM
64-BYTE
BBRAM
256-BYTE
MCR RAM
Σ-Δ
MODULATOR
GAUSSIAN
FILTER
WAKE UP CONTROL
TIMER UNIT
IRQ
CTRL
SPI
GPIO
TEST
DAC
CLOCK
DIVIDER
BIAS
ANALOG
TEST
TEMP
BATTERY
SENSOR MONITOR
32kHz
OSC
32kHz
RCOSC
26MHz
OSC
IRQ_GP3
CSN
MISO
SCLK
MOSI
GPIO¹
CREGRFx CREGVCO CREGSYNTH CREGDIGx RBIAS
1_{GPIO REFERS TO PIN GP0 TO PIN GP5.}
XOSC32KN_ATB2 XOSC32KP_GP5_ATB1 XOSC26N XOSC26P
Figure 1.
For more information on the ADF7022, contact a local sales office at Analog Devices, Inc.
Rev. Sp0
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