General Description

The MAX7032 crystal-based, fractional-N transceiver is designed to transmit and receive ASK/OOK or FSK data in the 300MHz to 450MHz frequency range with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded). This device generates a typical output power of +10dBm into a 50Ω load, and exhibits typical sensitivities of -114dBm for ASK data and -110dBm for FSK data. The MAX7032 features separate transmit and receive pins (PAOUT and LNAIN) and provides an internal RF switch that can be used to connect the transmit and receive pins to a common antenna.

Features

♦ +2.1V to +3.6V or +4.5V to +5.5V Single-Supply

   Operation

♦ Single Crystal Transceiver

♦ User-Adjustable 300MHz to 450MHz Carrier

   Frequency

♦ ASK/OOK and FSK Modulation

♦ User-Adjustable FSK Frequency Deviation

   Through Fractional-N PLL Register

♦ Agile Transmitter Frequency Synthesizer with

   fXTAL/4096 Carrier-Frequency Spacing

♦ +10dBm Output Power into 50Ω Load

♦ Integrated TX/RX Switch

♦ Integrated Transmit and Receive PLL, VCO, and

   Loop Filter

♦ > 45dB Image Rejection

♦ Typical RF Sensitivity*

   ASK: -114dBm

   FSK: -110dBm

♦ Selectable IF Bandwidth with External Filter

♦ RSSI Output with High Dynamic Range

♦ Autopolling Low-Power Management

♦ < 12.5mA Transmit-Mode Current

♦ < 6.7mA Receive-Mode Current

♦ < 23.5µA Polling-Mode Current

♦ < 800nA Shutdown Current

♦ Fast-On Startup Feature, < 250µs

♦ Small 32-Pin, Thin QFN Package

Applications

   2-Way Remote Keyless Entry

   Security Systems

   Home Automation

   Remote Controls

   Remote Sensing

   Smoke Alarms

   Garage Door Openers

   Local Telemetry Systems