General Description

The MAX7060 frequency and power-programmable ASK/FSK transmitter operates at 280MHz to 450MHz frequencies. This device incorporates a fully integrated fractional-N synthesizer, which allows the user to set the RF operating frequency to a large fraction of the 280MHz to 450MHz frequency range with a single crystal. For example, the MAX7060 can be tuned from 285MHz to 420MHz with a 15MHz crystal. The RF output power is user-controlled between +14dBm and -14dBm, with a 5V supply or with battery voltages as low as 3.2V. At the minimum specified battery voltage of 2.1V, the RF output power-control range is between +10dBm and -14dBm. To maintain a good output power match across a broad range of frequencies, the MAX7060 also contains a programmable matching capacitor connected in parallel with the power amplifier (PA) output

Features

♦ Fully Integrated, Fast Fractional-N PLL

   280MHz to 450MHz RF Frequency

   Frequency Range 100 Tested at +125NC

   < 250µs Startup Time

   Adjustable FSK Mark and Space Frequencies

   Ultra-Clean FSK Modulation

   50kbps Manchester Data Rate ASK

   70kbps Manchester Data Rate FSK

♦ Programmable Power Amplifier

   +14dBm Tx Power with 5V Supply

   +10dBm Tx Power at 2.1V Supply

   28dB Power-Control Range in 1dB Steps

♦ Tunable PA Matching Capacitor

♦ Control Through SPI or Manual Settings

♦ Low Shutdown Current for 2.1V to 3.6V Supply

   400nA Standby Current, Power-On-Reset

      (POR) Active

   5nA Shutdown Current, POR Inactive

♦ Supply Flexibility

   2.1V to 3.6V Single-Supply Operation or

   4.5V to 5.5V Supply Operation with Internal

      Regulators

♦ 24-Pin (4mm x 4mm) TQFN Package

♦ FCC Part 15, ETSI EN 300 220 Compliant*

Applications

   Garage-Door Openers

   Remote Controls

   Home and Industrial Automation

   Sensor Networks

   Security Systems