ADF7241 datasheet(3/72 Pages) AD

Part #	ADF7241

Description	Low Power IEEE 802.15.4 Zero-IF 2.4 GHz Transceiver IC

Download	72 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

Logo

3 / 72 page

ADF7241

Rev. 0 | Page 3 of 72

GENERAL DESCRIPTION

The ADF7241 is a highly integrated, low power, and high perfor-

mance transceiver for operation in the global 2.4 GHz ISM band. It

is designed with emphasis on flexibility, robustness, ease of use,

and low current consumption. The IC supports the IEEE 802.15.4-

2006 2.4 GHz PHY requirements in both packet and data

streaming modes. With a minimum number of external compo-

nents, it achieves compliance with the FCC CFR47 Part 15,

ETSI EN 300 440 (Equipment Class 2), ETSI EN 300 328

(FHSS, DR > 250 kbps), and ARIB STD T-66 standards.

The ADF7241 complies with the IEEE 802.15.4-2006 2.4 GHz

PHY requirements with a fixed data rate of 250 kbps and DSSS-

OQPSK modulation. The transmitter path of the ADF7241 is

based on a direct closed-loop VCO modulation scheme using a

low noise fractional-N RF frequency synthesizer. The

automatically calibrated VCO operates at twice the fundamental

frequency to reduce spurious emissions and avoid PA pulling

effects. The bandwidth of the RF frequency synthesizer is

automatically optimized for transmit and receive operations to

achieve best phase noise, modulation quality, and synthesizer

settling time performance. The transmitter output power is

programmable from −20 dBm to +4 dBm with automatic PA

ramping to meet transient spurious specifications. An

integrated biasing and control circuit is available in the IC to

significantly simplify the interface to external PAs.

The receive path is based on a zero-IF architecture enabling very

high blocking resilience and selectivity performance, which are

critical performance metrics in interference dominated environ-

ments such as the 2.4 GHz band. In addition, the architecture

does not suffer from any degradation of blocker rejection in the

image channel, which is typically found in low IF receivers. The

IC can operate with a supply voltage between 1.8 V and 3.6 V with

very low power consumption in receive and transmit modes while

maintaining its excellent RF performance, making it especially

suitable for battery-powered systems.

The ADF7241 features a flexible dual-port RF interface that can

be used with an external LNA and/or PA in addition to support-

ing switched antenna diversity.

The ADF7241 incorporates a very low power custom 8-bit

processor that supports a number of transceiver management

functions. These functions are handled by the two main mod-

ules of the processor: the radio controller and the packet manager.

The radio controller manages the state of the IC in various

operating modes and configurations. The host MCU can use

single byte commands to interface to the radio controller. In

transmit mode, the packet manager can be configured to add

preamble and SFD to the payload data stored in the on-chip

packet RAM. In receive mode, the packet manager can detect

and generate an interrupt to the MCU upon receiving a valid SFD,

and store the received data payload in the packet RAM. A total

of 256 bytes of transmit and receive packet RAM space is

provided to decouple the over-the-air data rate from the host

MCU processing speed. Thus, the ADF7241 packet manager

eases the processing burden on the host MCU and saves the

overall system power consumption.

In addition, for applications that require data streaming, a

synchronous bidirectional serial port (SPORT) provides bit-

level input/output data, and has been designed to directly

interface to a wide range of DSPs, such as ADSP-21xx, SHARC®,

TigerSHARC®, and Blackfin®. The SPORT interface can option-

ally be used.

The processor also permits the download and execution of a set

of firmware modules, which include IEEE 802.15.4 automatic

modes, such as node address filtering, as well as unslotted

CSMA/CA. Execution code for these firmware modules is

available from Analog Devices, Inc.

To further optimize the system power consumption, the ADF7241

features an integrated low power 32 kHz RC wake-up oscillator,

which is calibrated from the 26 MHz crystal oscillator while the

transceiver is active. Alternatively, an integrated 32 kHz crystal

oscillator can be used as a wake-up timer for applications

requiring very accurate wake-up timing. A battery backed-up

RAM (BBRAM) is available on the IC where IEEE 802.15.4-

2006 network node addresses can be retained when the IC is in

the sleep state.

The ADF7241 also features a very flexible interrupt controller,

which provides MAC-level and PHY-level interrupts to the host

MCU. The IC is equipped with a SPI interface, which allows

burst mode data transfer for high data throughput efficiency.

The IC also integrates a temperature sensor with digital read-

back and a battery monitor.

Similar Part No. - ADF7241

Manufacturer	Part #	Datasheet	Description
Analog Devices	ADF7242	1Mb / 108P	Low Power IEEE 802.15.4/Proprietary GFSK/FSK Zero-IF 2.4 GHz Transceiver IC REV. 0
	ADF7242BCPZ	1Mb / 108P	Low Power IEEE 802.15.4/Proprietary GFSK/FSK Zero-IF 2.4 GHz Transceiver IC REV. 0
	ADF7242BCPZ-RL	1Mb / 108P	Low Power IEEE 802.15.4/Proprietary GFSK/FSK Zero-IF 2.4 GHz Transceiver IC REV. 0

More results

Similar Description - ADF7241

Manufacturer	Part #	Datasheet	Description
Analog Devices	ADF7242	1Mb / 108P	Low Power IEEE 802.15.4/Proprietary GFSK/FSK Zero-IF 2.4 GHz Transceiver IC REV. 0
Microchip Technology	MRF24J40	2Mb / 152P	IEEE 802.15.4??2.4 GHz RF Transceiver 2008
	MRF24J40MB-I	3Mb / 156P	IEEE 802.15.4??2.4 GHz RF Transceiver 07/15/10
	MRF24J40	3Mb / 156P	IEEE 802.15.4??2.4 GHz RF Transceiver 2010
	MRF24J40	1Mb / 66P	IEEE 802.15.4??2.4 GHz RF Transceiver 2006
Texas Instruments	CC2520	2Mb / 134P	[Old version datasheet] 2.4 GHZ IEEE 802.15.4/ZIGBEE짰 RF TRANSCEIVER
Freescale Semiconductor...	MC13193FC	559Kb / 24P	2.4 GHz Low Power Transceiver for the IEEE 802.15.4 Standard
	MC13201	340Kb / 26P	2.4 GHz Low Power Transceiver for the IEEE 802.15.4 Standard
	MC13202	367Kb / 30P	2.4 GHz Low Power Transceiver for the IEEE 802.15.4 Standard
	MC13201	344Kb / 28P	2.4 GHz Low Power Transceiver for the IEEE 802.15.4 Standard

More results

ADF7241 Datasheet(PDF) 3 Page - Analog Devices

ADF7241 Datasheet(HTML) 3 Page - Analog Devices

Similar Part No. - ADF7241

Similar Description - ADF7241

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

Datasheet Download

Link URL