PT4455
PT4455(低电压UHF OOK/ASK发射器)。
PT4455使用晶振作为基频，使得频率偏移可以降至最低。在250~450MHz的操作频带中， 3.0V的工作电压即可输出+10dBm功率，很适合低电压应用。PT4455也是市面上相同方案中外围零件最少者，可以减少PCB所需面积，让终端产品在造型有更多发挥的空间，采用SOT-23-6封装,跟pt4450比，它有了内置晶振！


FEATURES •
Highly integrated OOK/ASK transmitter • High output power, 3 V /+11 dBm / 17 mA • Low supply voltage, 2.2 V to 3.6 V operation range• Low external component cost. • PLL-based transmitter with frequency range from 250MHz to 450MHz • On-chip one-shot circuit • 60 dB RF on-off ratio for OOK/ASK modulation • SOT23-6

DESCRIPTION

PT4455 is a high performance OOK/ASK        transmitter for the Remote Keyless Entry (RKE) systems.  It consists of a power amplifier, one-shot circuit and phase-locked loop with internal voltage controlled oscillator and loop filter.  The one-shot circuit control the phase-locked loop and power amplifier to have fast start-up time in operation.

FEATURES 

 Highly integrated OOK/ASK transmitter  High output power, 3 V /+11 dBm / 17 mA  Low supply voltage, 2.2 V to 3.6 V operation range Low external component cost.  PLL-based transmitter with frequency range from 250MHz to 450MHz  On-chip one-shot circuit  60 dB RF on-off ratio for OOK/ASK modulation  SOT23-6 package

APPLICATIONS 

 Keyless entry systems  Remote control systems  Garage door openers  Alarm systems  Security systems  Wireless sensors

PTC/普诚科技 旗下还有以下射频芯片：PT2260 / PT4455 / PT4301 / PT4302 / PT4316 / PT4317 / PT4450 都可以长期稳定优势供应！

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联系电话：0755-82811555
联系人： 李小姐

地址：深圳市福田区华强北都会100大厦B座19