VOICEBAND SWITCHED-CAP.4CITOR filters described to date have been limited in dynamic range by the l j f noise in the devices within the operational amplifiers in the filter. This source of noise has two practical effects. First, it limits the achievable dynamic range of voiceband filters to the 80-90dB rangel'j, limiting their applicability in high quality audio applications, such as reeonstruction filters for digital audio decoders. Second, since the flicker noise of &$OS devices is inversely proportional to…
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