PT4455 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.
PT4455 Key Features
- Highly integrated OOK/ASK transmitter
- High output power, 3V /+11dBm /17mA
- Low supply voltage, 2.2V to 3.6V operation range
- Low external ponent cost
- PLL-based transmitter with frequency range from
- On-chip one-shot circuit
- 60dB RF on-off ratio for OOK/ASK modulation
- Available in 6-pin, SOT-23 package