UAA2082

The UAA2082 is a high-performance low-power radio receiver circuit primarily intended for VHF, UHF and 900 MHz pager receivers for wide area digital paging systems, employing direct FM non-return-to-zero (NRZ) frequency shift keying (FSK).

The receiver design of UAA2082 is based on the direct conversion principle where the input signal is mixed directly down to the baseband by a local oscillator on the signal frequency.Two complete signal paths with signals of 90° phase difference are required to demodulate the signal.All channel selectivity is provided by the built-in IF filters.The circuit UAA2082 makes extensive use of on-chip capacitors to minimize the number of external components.

The battery monitoring circuit of UAA2082 has an external sense input and a 1.1 V detection threshold for easy operation in a single-cell supply concept.

The UAA2082 was designed to operate together with the PCA5000A, PCF5001 or PCD5003 POCSAG decoders,which contain a digital input filter for optimum call success rate.