ADF7024 datasheet(3/24 Pages) AD

3 / 24 page

Data Sheet

ADF7024

Rev. B | Page 3 of 24

GENERAL DESCRIPTION

The ADF7024 is an ultralow power, integrated transceiver for

use in the license-free ISM bands at 433 MHz, 868 MHz, and

915 MHz. Its ease of use and high performance make it suitable

for a wide variety of wireless applications. The ADF7024 is

suitable for operation under the European ETSI EN 300-220

regulation, the North American FCC Part 15 regulation, and

other similar regulatory standards.

The ADF7024 can operate under a number of predefined radio

profiles. For each radio profile, optimized register settings are

provided for the ADF7024 radio. This ensures that the RF

communication layer works seamlessly, allowing the user to

concentrate on the protocol and system level design and

prototyping. The radio profiles cover common data rate and

modulation options. There are six radio profiles in total, as

shown in Table 1.

The ADF7024 operates with a power supply range of 2.2 V to

3.6 V and has very low power consumption in both Tx and Rx

modes, enabling long lifetimes in battery-operated systems while

maintaining excellent RF performance.

The low IF receiver minimizes power consumption and provides

excellent sensitivity. The receiver is exceptionally linear and,

therefore, is very resilient to the presence of interferers in spectrally

noisy environments. The highly efficient transmitter has

programmable output power up to 13.5 dBm and automatic

power amplifier (PA) ramping to meet transient spurious

specifications. The RF synthesizer comprises a voltage controlled

oscillator (VCO), a low noise fractional-N phase-locked loop

(PLL) and a loop filter, all of which are fully integrated and

automatically calibrated. This agile frequency synthesizer

facilitates the implementation of frequency-hopping spread

spectrum (FHSS) systems.

The smart wake mode (SWM) allows the ADF7024 to wake up

autonomously from sleep using the internal wake-up timer without

intervention from the host processor. This functionality allows

carrier sense, packet sniffing, and packet reception while the host

processor is in sleep, thereby reducing overall system current

consumption.

The ADF7024 eases the processing burden of the host processor

by integrating the lower layers of a typical communication protocol

stack. The host processor can configure the ADF7024 using a

simple command-based protocol over a standard 4-wire SPI

interface. A single-byte command transitions the radio between

states or performs a radio function.

A complete wireless solution can be built using a small number

of external discrete components and a host processor (typically

a microcontroller).

For more information, see the ADF7024 Hardware Reference

Manual, UG-698, which is only available as part of the ADF7024

design resource package.

Table 1. Radio Profiles

Radio

Profile

Data Rate

(kbps)

Modulation

Frequency Deviation

(kHz)

IF Bandwidth

(kHz)

Typical Channel

Spacing (kHz)

RF Range (MHz)

9.6

FSK/GFSK

9.6

100

200

862 to 928

38.4

FSK/GFSK

100

200

431 to 435, 862 to 928

FSK/GFSK

100

200

862 to 928

100

FSK/GFSK

100

200

862 to 928

200

FSK/GFSK

200

400

862 to 928

300

FSK/GFSK

300

600

862 to 928

ADF7024 Datasheet(PDF) 3 Page - Analog Devices

ADF7024 Datasheet(HTML) 3 Page - Analog Devices

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

Datasheet Download

Link URL