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LC2 MOS完整的14位模数转换器ad7871/ad7872数据表
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The AD7871/AD7872 are fast， complete， 14-bit analog-todigital converters （ADC）。 They consist of a track-and-hold amplifier， successive approximation ADC， 3 V buried Zener reference， and versatile interface logic. The ADC features a selfcontained， laser trimmed internal clock， so no external clock timing components are required. The on-chip clock may be overridden to synchronize ADC operation to the digital system for minimum noise. The AD7871 offers a choice of three data output formats： a single， parallel， 14-bit word; two 8-bit bytes or a 14-bit serial data stream. The AD7872 is a serial output device only. The two parts are capable of interfacing to all modern microprocessors and digital signal processors. The AD7871/AD7872 operate from ±5 V power supplies， accept bipolar input signals of ±3 V and can convert full power signals up to 41.5 kHz. In addition to the traditional dc accuracy specifications， the AD7871/AD7872 are also fully specified for dynamic performance parameters including distortion and signal-tonoise ratio.
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