A 1.8 V 94 dB dynamic range /spl Sigma//spl Delta/ modulator for voice applications

E. MacRobbie, R. Halim, G. Temes
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引用次数: 20

Abstract

This 2nd-order switched-capacitor (SC) /spl Sigma//spl Delta/ modulator uses a 1.8 V power supply. The circuit provides 15 b S/N performance over the 300 Hz-3.5 kHz band and hence has application in voice codecs. The circuit is designed for a nominal S/N performance of 16 b.
1.8 V 94 dB动态范围/spl Sigma//spl Delta/调制器用于语音应用
这种二阶开关电容(SC) /spl Sigma//spl Delta/调制器使用1.8 V电源。该电路在300 Hz-3.5 kHz频段内提供15b信噪比性能,因此在语音编解码器中具有应用价值。该电路的标称信噪比性能为16b。
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