io-homecontrol-Compliant RF Transceiver
ADF7022
Very low power consumption
FEATURES
12.8 mA in receive mode with AGC active
11.9 mA in receive mode with manual AGC, ADC off
24.1 mA in transmit mode (10 dBm output)
0.75 μA in RCO wake mode
Very low power, high performance, low IF transceiver
Fully integrated io-homecontrol compliant protocol covering
Layer 1, Layer 2, and time critical elements of Layer 3
Media access
1.25 μA in XTO wake mode (32 kHz oscillator active)
38.4 μA average current in low power mode
Receiver sensitivity (10−3 BER)
−108.5 dBm at 38.4 kbps FSK, 20 kHz deviation
Output power programmable up to 13.5 dBm
Automatic PA ramping
Master, slave, and beacon modes supported
Automatic io-homecontrol channel scan
Automatic CRC, preamble, start byte insertion/check
UART data encoding as per io-homecontrol
Smart preamble detect/packet sniffing
Automatic address filtering
Dual PAs offer Tx antenna diversity
Very few external components
Integrated PLL loop filter
Integrated Rx/Tx switch
Integrated battery monitor
Low power modes
Autonomous packet handling without intervention of host
microprocessor thus significantly increasing battery life
1-way and 2-way communication supported
Automatic wake-up timer
On-chip 8-bit ADC and temperature sensor
Efficient and flexible SPI control interface
4 lines available for low cost microcontroller interface
Flexible Tx and Rx data buffers
32-bit hardware timer, 16-bit firmware timer (48 bits total)
Uses either
External 32 kHz crystal
Internal 32 kHz RC oscillator
Efficient burst mode register access
1.8 V to 3.6 V power supply
5 mm × 5 mm, 32-lead LFCSP package
Patented fast settling automatic frequency control (AFC)
Fully integrated image rejection calibration (patent pending)
Digital RSSI
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
IRQ
CTRL
4kB ROM
IO-H/C
MAC
IRQ_GP3
FSK
DEMOD
LNA
RFIO_1P
RFIO_1N
RSSI/
CSN
8-BIT RISC
PROCESSOR
8-BIT
ADC
2kB RAM
LOGAMP
MISO
SCLK
MOSI
CDR
AFC
AGC
SPI
256-BYTE
PACKET
RAM
PA
PA
64-BYTE
BBRAM
LOOP
FILTER
CHARGE
PUMP
GPIO
DIVIDER
RFO2
PFD
256-BYTE
MCR RAM
TEST
DAC
1
DIVIDER
GPIO
PA RAMP
PROFILE
fDEV
WAKE UP CONTROL
TIMER UNIT
GAUSSIAN
FILTER
CLOCK
DIVIDER
Σ-∆
MODULATOR
ADF7022
ANALOG
TEST
TEMP
SENSOR
BATTERY
MONITOR
32kHz
OSC
32kHz
RCOSC
26MHz
OSC
BIAS
CREGRFx CREGVCO CREGSYNTH CREGDIGx RBIAS
GPIO REFERS TO PIN GP0 TO PIN GP5.
XOSC32KN_ATB2 XOSC32KP_GP5_ATB1 XOSC26N XOSC26P
1
Figure 1.
For more information on the ADF7022, contact a local sales office at Analog Devices, Inc.
Rev. SpA
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2009–2011 Analog Devices, Inc. All rights reserved.
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