RX1305

This amplifier-sequenced hybrid (ASH) receiver RX1305 is based on several leading-edge technologies that allow outstanding performance in a small and simple-to-apply module. Two surface-accoustic-wave (SAW) devices are employed. Front-end filtering by a low-loss coupled-resonator SAW filter provides excellent selectivity. ypical sensitivity better than -97 dBm is achieved with no RF oscillating or regenerative circuits. This results in virtually no RF spurious missions. A low-loss SAW delay line provides the time delay necessary to sequence the two RF amplifiers. Time sequencing of he RF gain eliminates the need for frequency conversion prior to AM detection. This receiver RX1305 is designed to operate from a 3 V lithium attery with typically 1.2 mA current. For system design flexibility, the baseband output is accessible, and the comparator threshold can e changed externally between two settings. Typical applications include unlicensed wireless remote-controls, security and data-transmission evices operating in the United Kingdom under DTI MPT 1240 and in the USA under FCC Part 15.