DESCRIPTION BQ3658 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, 3V /+11dBm /17mA - Low supply voltage, 2.2V to 3.6V operation range - Low external component cost. - PLL-based transmitter with frequency range from 300MHz to 450MHz - On-chip one-shot circuit - 60dB RF on-off ratio for OOK/ASK modulation - Available in 6-pin, SOT-23 package
APPLICATIONS - Keyless entry systems - Remote control systems - Garage door openers - Alarm systems - Security systems - Wireless sensors
