详细说明：

DESCRIPTION
    The PT4303 is a low power super-heterodyne OOK/ASK receiver for the 315/434 MHz frequency bands. It offers a high level of integration and requires only few external components. The PT4303 consists of a low-noise amplifier (LNA), a down-conversion mixer,an on-chip phase-locked loop (PLL) with integrated voltage-controlled oscillator (VCO) and loop filter, an OOK/ASK demodulator, a data filter, a data slicing comparator and an on-chip regulator.
    The PT4303 is available in 14-pin SOP package and is specified over the extended temperature range (-40 to +85°C).

FEATURES
· Ultra-low power consumption: 2.7 mA for fully operation (315 MHz);
· Few external components;
· Excellent Sensitivity of the order of –110 dBm (peak ASK signal level at 315 MHz);
· Supply voltage range from 2.4 V to 5.5 V;
· 250 MHz to 500 MHz frequency range;
· Data rate up to 10 Kb/s;

APPLICATIONS
· Automotive Remote Keyless Entry (RKE);
· Remote Control;
· Garage door and gate openers;
· Suitable for circuit applications that meet either the European ETSI-300-220 or the North American FCC (Part 15) regulatory standards;

   这是PTC目前最新推出的一款低功耗超外差接收器，在250MHz-500MHz领域中有广泛的应用，产品性能稳定，性价比例最高，是用作无线接收的一种最佳选择！
    PTC在射频方面有所建树，目前主推的发射方面有PT4450/PT4455/PT4452/TX4915;接收方面有：PT4301/PT4302/PT4317/PT4330/RX3310A/RX3140/RX3361/RX3408;
   近来PTC还将推出系列射频芯片，其中有收发一体的PT4501;接收方面还有PT4304/PT4312;值得期待！
   希望在PTC方面能够长期稳定协助到大家