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

APPLICATIONS

Wireless audio/video

Remote control/security systems

Wireless metering

Keyless entry

Home automation