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
      < 1.4 GHz Operation

APPLICATIONS
   Low Cost Wireless Data Transfer
   Wireless Metering
   Remote Control/Security Systems
   Keyless Entry