| Low-Power Successive Approximation Converter With 0.5 V Supply in 90 nm CMOS (2009) | |||||||||||||||
Abstract | |||||||||||||||
| Abstract—We report on the design and characterization of an ultralow-power converter, designed for use in baseband digitization in wireless sensor network radio receivers. The converter uses a successive approximation architecture and operates robustly with a supply voltage as low as 450 mV, overcoming charge leakage limitations. Implemented in a 90 nm CMOS process, this design achieves a figure of merit of 0.14 pJ/Conv.Step for the converter core and shows the integration of a complete data-conversion subsystem, including reference generation, from a 0.5 V supply. Index Terms—Analog-to-digital conversion, charge leakage, CMOS, digital calibration, low power, low voltage, subthreshold, successive approximation. | |||||||||||||||
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