Design of Low Power Discrete Time Sigma-delta Modulator for Analog to Digital Converter
نویسنده
چکیده
Modulator is one of the most significant building-blocks in integrated discrete time component used in Sigma-Delta (ΣΔ) analog to digital converter. In this paper a novel structure of a switched-capacitor discrete time first order modulator Sigma-Delta is implemented at a supply voltage of 3 V. In addition, our design uses a Miller operational transconductance amplifier topology for low power consumption. The designed modulator has a resolution of 8 bits at a sampling frequency of 10.24 MHz. Eventually the modulator consumes only 1.16 mW of power under 3V. The core chip size of the modulator without bonding pads is 0.008 mm (76 μm x 110 μm) by using the AMS 0.35 μm CMOS technology.
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