MAX7032

19-3685; Rev 0; 5/05 Low-Cost, Crystal-Based, Programmable, ASK/FSK Transceiver with Fractional-N PLL www.datasheet4u.com General Description 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 *0.2% BER, 4kbps Manchester-encoded data, 280kHz IF BW, average RF power MAX7032 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 50 Ω load, and exhibits typical sensitivities of -114dBm for ASK data and -110dBm for FSK data. The MAX7032 features separate transmit a...