ADF7241 Datasheet PDF - Analog Devices

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ADF7241
Analog Devices

Part Number ADF7241
Description Low Power IEEE 802.15.4 Zero-IF 2.4 GHz Transceiver IC
Page 30 Pages


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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
www.DataSheet4U.com
PA
LDO × 4
FRACTIONAL-N
RF SYNTHESIZER
PRE-EMPHASIS FILTER
WAKE-UP CTRL
BIAS
BATTERY TEMPERATURE
MONITOR
SENSOR
26MHz
OSC
32kHz
RC
OSC
32kHz
XTAL
OSC
4kB
PROGRAM
ROM
2kB
PROGRAM
RAM
256-BYTE
PACKET
RAM
64-BYTE
BBRAM
256-BYTE
MCR
SPI
GPIO
SPORT
IRQ
Figure 1.
Rev. 0
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
©2011 Analog Devices, Inc. All rights reserved.

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