GENERAL DESCRIPTION

The ADF7025 is a low power, highly integrated FSK transceiver. It is designed for operation in the license–free ISM bands of 433 MHz, 863 MHz to 870 MHz, and 902 MHz to 928 MHz. The ADF7025 can be used for applications operating under the European ETSI EN300-220 or the North American FCC (Part 15) regulatory standards. The ADF7025 is intended for wideband, high data rate applications with deviation frequencies from 100 kHz to 750 kHz and data rates from 9.6 kbps to 384 kbps. A complete transceiver can be built using a small number of external discrete components, making the ADF7025 very suitable for price-sensitive and area-sensitive applications.

FEATURES

  Low power, zero-IF RF transceiver

  Frequency bands

     431 MHz to 464 MHz

     862 MHz to 870 MHz

     902 MHz to 928 MHz

  Data rates supported

     9.6 kbps to 384 kbps, FSK

  2.3 V to 3.6 V power supply

  Programmable output power

     −16 dBm to +13 dBm in 63 steps

  Receiver sensitivity

     −104.2 dBm at 38.4 kbps, FSK

     −100 dBm at 172.8 kbps, FSK

     −95.8 dBm at 384 kbps, FSK

  Low power consumption

     19 mA in receive mode

     28 mA in transmit mode (10 dBm output)

  On-chip VCO and Fractional-N PLL

  On-chip, 7-bit ADC and temperature sensor

  Digital RSSI

  Integrated TRx switch

  Leakage current < 1 µA in power-down mode

APPLICATIONS

  Wireless audio/video

  Remote control/security systems

  Wireless metering

  Keyless entry

  Home automation