Overview

Features and Benefits

  • Frequency range (global ISM band)
    2400 MHz to 2483.5 MHz
  • Programmable data rates and modulation
    IEEE 802.15.4-2006-compatible (250 kbps) GFSK/FSK/GMSK/MSK modulation
    50 kbps to 2000 kbps data rates
  • 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 (IEEE 802.15.4-2006)
    −95 dBm at 250 kbps
  • High sensitivity (0.1% BER)
    −96 dBm at 62.5 kbps (GFSK)
    −93 dBm at 500 kbps (GFSK)
    −90 dBm at 1 Mbps (GFSK)
    −87.5 dBm at 2 Mbps (GFSK)
  • Programmable output power
    −20 dBm to +4.8 dBm in 2 dB steps
  • See data sheet for additional Features

Product Details

The ADF7242 is a highly integrated, low power, and high performance 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 as well as proprietary GFSK/ FSK/GMSK/MSK modulation schemes in both packet and data streaming modes. With a minimum number of external components, 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 ADF7242 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. With its support of GFSK/FSK/GMSK/MSK modulation schemes, the IC can operate over a wide range of data rates from 50 kbps to 2 Mbps and is, therefore, equally suitable for proprietary applications in the areas of smart metering, industrial control, home and building automation, and consumer electronics. In addition, the agile frequency synthesizer of the ADF7242, together with short turnaround times, facilitates the implementation of FHSS systems.

The transmitter path of the ADF7242 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 optimum 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 environments 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. In GFSK/FSK modes, the receiver features a high speed automatic frequency control (AFC) loop, which allows the frequency synthesizer to find and correct any frequency errors in the received packet.

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 ADF7242 features a flexible dual-port RF interface that can be used with an external LNA and/or PA in addition to supporting switched antenna diversity.

The ADF7242 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 modules of the processor; the radio controller and the packet manager.

See data sheet for additional information.

Applications

  • Wireless sensor networks
  • Automatic meter reading/Smart metering
  • Industrial wireless control
  • Healthcare
  • Wireless audio / video
  • Consumer electronics
  • Zigbee

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Software & Systems Requirements

Tools & Simulations

Design Tools

ADIsimSRD Design Studio

Analog Devices ADIsimSRD Design Studio is a very powerful tool allowing real-time simulation and optimization of many of the parameters in a typical wireless system using the ADF7xxx family of transceivers and transmitters.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Discussions

ADF7242 Discussions

RE: ADF7242 Max. Input power.
7 week(s) ago in Other Products
RE: ADF7242 and frequency hopping in GFSK/FSK mode
7 week(s) ago in Other Products
RE: ADF7242 evaluation board specifications
7 week(s) ago in RF and Microwave
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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.