Low Power ASK Transmitter IC

The TX4915 is a low power ASK transmitter IC intended for applications in the North American and European VHF/UHF bands. The integrated Voltage-Controlled Oscillator (VCO), phase/frequency detector, prescaler, and reference Oscillator require only the addition of an external crystal to provide a complete phase-locked loop (PLL). In addi- tion to the standard power-down mode, the chip also includes an Automatic lock-detect feature that disables the transmitter output when the PLL is out-of-lock. By Princeton Technology Corp.