GENERAL DESCRIPTION

The ADF7011 is a low power OOK/ASK/FSK/GFSK UHF transmitter designed for use in ISM band systems. It contains and integrated VCO and Σ-∆ fractional-N PLL. The output power, channel spacing, and output frequency are programmable with four 24-bit registers. The fractional-N PLL enables the user to select any channel frequency within the European 433 MHz and 868 MHz bands, allowing the use of the ADF7011 in frequency hopping systems. The fractional-N also allows the transmitter to operate in the less congested sub-bands of the 868 MHz to 870 MHz SRD band.

FEATURES

Single Chip Low Power UHF Transmitter

Frequency Band

433 MHz to 435 MHz

868 MHz to 870 MHz

On-Chip VCO and Fractional-N PLL

2.3 V to 3.6 V Supply Voltage

Programmable Output Power

–16 dBm to +12 dBm, 0.3 dB Steps

Data Rates up to 76.8 kbps

Low Current Consumption

29 mA at +10 dBm at 433.92 MHz

Power-Down Mode (<1 μA)

24-Lead TSSOP Package Hooks to External VCO for

APPLICATIONS

Low Cost Wireless Data Transfer

Wireless Metering

Remote Control/Security Systems

Keyless Entry