PT4452(低电压UHF OOK/ASK/FSK发射器).
PT4452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.PT4452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SOP-8封装
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Description
PT4452 is a high performance OOK/ASK/FSK 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 controls the phase-locked loop and power amplifier to have fast start-up time in operation.
Features
Highly integrated OOK/ASK/FSK transmitter
High output power, 3 V /+12 dBm /27 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
Applications
Keyless entry systems
Remote control systems
Garage door openers
Alarm systems
Security systems
Wireless sensors
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