ADF7241 Datasheet, PDF (1/72 Pages) Analog Devices – Low Power IEEE 802.15.4 Zero-IF 2.4 GHz Transceiver IC

Low Power IEEE 802.15.4 Zero-IF 2.4 GHz
Transceiver IC
ADF7241
FEATURES
Frequency range (global ISM band)
2400 MHz to 2483.5 MHz
IEEE 802.15.4-2006-compatible (250 kbps)
Low power consumption
19 mA (typical) in receive mode
21.5 mA (typical) in transmit mode (PO = 3 dBm)
1.7 μA, 32 kHz crystal oscillator wake-up mode
High sensitivity
−95 dBm at 250 kbps
Programmable output power
−20 dBm to +4.8 dBm in 2 dB steps
Integrated voltage regulators
1.8 V to 3.6 V input voltage range
Excellent receiver selectivity and blocking resilience
Zero-IF architecture
Complies with EN300 440 Class 2, EN300 328, FCC CFR47
Part 15, ARIB STD-T66
Digital RSSI measurement
Fast automatic VCO calibration
Automatic RF synthesizer bandwidth optimization
On-chip low power processor performs
Radio control
Packet management
Packet management support
Insertion/detection of preamble address/SFD/FCS
IEEEE 802.15.4-2006 frame filtering
IEEEE 802.15.4-2006 CSMA/CA unslotted modes
Flexible 256-byte transmit/receive data buffer
SPORT mode
Flexible multiple RF port interface
External PA/LNA support hardware
Switched antenna diversity support
Wake-up timer
Very few external components
Integrated PLL loop filter, receive/transmit switch, battery
monitor, temperature sensor, 32 kHz RC and crystal
oscillators
Flexible SPI control interface with block read/write access
Small form factor 5 mm × 5 mm 32-lead LFCSP package
APPLICATIONS
Wireless sensor networks
Automatic meter reading/smart metering
Industrial wireless control
Healthcare
Wireless audio/video
Consumer electronics
ZigBee
ADF7241
LNA1
LNA2
FUNCTIONAL BLOCK DIAGRAM
DAC
ADC
ADC
DAC
DSSS
DEMOD
AGC
OCL
CDR
8-BIT
PROCESSOR
RADIO
CONTROLLER
PACKET
MANAGER
PA
FRACTIONAL-N
RF SYNTHESIZER
PRE-EMPHASIS FILTER
WAKE-UP CTRL
4kB
PROGRAM
ROM
2kB
PROGRAM
RAM
256-BYTE
PACKET
RAM
64-BYTE
BBRAM
256-BYTE
MCR
SPI
LDO × 4
BIAS
BATTERY TEMPERATURE
MONITOR
SENSOR
26MHz
OSC
32kHz
RC
OSC
32kHz
XTAL
OSC
GPIO
SPORT
IRQ
Figure 1.
Rev. 0
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