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UAA2082
Information as of 2000-08-17
UAA2082; Advanced pager receiver
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 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 makes extensive use of on-chip capacitors to minimize the number of
external components.
The battery monitoring circuit 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.
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Wide frequency range: VHF, UHF and 900 MHz bands
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High sensitivity
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High dynamic range
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Electronically adjustable filters on chip
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Suitable for data rates up to 2400 bits/s
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Wide frequency offset and deviation range
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Fully POCSAG compatible FSK receiver
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Power on/off mode selectable by the chip enable input
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Low supply voltage; low power consumption
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