Taeyoon Kim, Wonki Park, Hee-Sun Ahn, Kyongwon Min, Sangyong Lee, Jongchan Choi, Chulwoo Kim, Kynnyun Kim, Sungchul Lee
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引用次数: 0
摘要
本文提出了一种110db, 1.024 MHz的四阶单环sigma-delta调制器,其过采样比为128,过载系数为-6 dB,带宽为4khz。该调制器特别适用于大气压力传感器。整个调制器在一个3.3 V电源中仅消耗3兆瓦,采用0.35 μ m CMOS技术,芯片尺寸为1.68 mm2。
A 110 dB, 3-mW fourth-order Σ-Δ modulator for atmospheric pressure sensor
In this paper, a 110 dB, 1.024 MHz fourth-order single-loop sigma-delta modulator has been presented with an over-sampling ratio of 128 and an overload factor of -6 dB for a bandwidth of 4 kHz. In particular, this Sigma-Delta modulator is well suited for atmospheric pressure sensor. The whole modulator consumes only 3-mW from a single 3.3 V supply in a 0.35-mum CMOS technology and chip size is 1.68 mm2.