RX2020

This amplifier-sequenced hybrid (ASH) receiver RX2020 is based on several leading-edge echnologies that allow outstanding performance in a small and simple-to-apply module. wo surface-accoustic-wave (SAW) devices are employed. Front-end filtering y a low-loss coupled-resonator SAW filter provides excellent selectivity. Typical sensitivity better than -72 dBm is achieved with no F oscillating or regenerative circuits. This results in virtually no RF spurious emissions. A low-loss SAW delay line provides the time elay necessary to sequence the two RF amplifiers. Time sequencing of the RF gain eliminates the need for frequency conversion prior o AM detection. This receiver RX2020 is designed to operate from a 3 V lithium battery with typically 2.5 mA current. For system design flexibility, he baseband output is accessible, and the comparator threshold can be changed externally between two settings. Typical applications nclude unlicensed wireless remote-controls, and digital data links operating in the USA under FCC Part 15.249 and in Canada nder DOC RSS-210.