CMX017

DATA BULLETIN CMX017 UHF FM/FSK Transmitter ADVANCE INFORMATION Features Direct FM/FSK UHF Modulator Adjustable Modulator Output Power Integrated Power Amplifier with Output Power up to +20dBm (100mW) Low Power 2.7V Operation Powersave and Zero-Power (<10µA) Modes 28-Pin SSOP Package GAIN Applications MODOUT General Radio Link 860-965MHz General 915MHz ISM Band (USA) Spread Spectrum Wireless Systems Fixed Frequency Transmissions Analog/Digital Cordless Phones Handheld Data Terminals SO-HO Wireless Data Links PAIN IPAOUT FM/FSK MODULATOR POWER AMPLIFIER DRIVER POWER AMPLIFIER PAOUT MODIN TANK BUFFERED OSCILLATOR OUTPUT BANDGAP & BIAS CONTROL OSCOUT ENLMOD ENLPA The CMX017 is a single chip UHF FM/FSK transmitter that combines both the RF VCO Modulator and RF Power Amplifier. It is suitable for both audio FM and digital FSK transmissions. A buffered oscillator output provides the RF signal drive to an external synthesizer or fixed frequency phaselocked loop for channel frequency selection. Modulator output power is adjustable over a 20dB range and the integrated power amplifier delivers up to +20dBm. The device also includes a powersave mode: “Transmit Standby” and a zero-power mode: “Sleep”. These allow independent power down control of both the modulator and power amplifier, thereby maximizing battery life. The device can be used in conjunction with the CMX018, a double-conversion super-heterodyne receiver, to implement a complete UHF ra...