供应PT4455L，低电压UHF OOK/ASK发射器

型号：PT4455L

厂家：PTC

封装：SOT23-6

批号：新年份

应用：遥控芯片锁、免钥匙开门系统、无线家庭保全、无线遥控系统及无线感应相关产品

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。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-6封装,跟pt4450比，它有了内置晶振！

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.

APPLICATIONS

· Keyless entry systems

· Remote control systems

· Garage door openers

· Alarm systems

· Security systems

· Wireless sensors

 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