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An 1.2 V 8-bit 1-MS/s Single-Input Res-Cap Segment SAR ADC for Temperature Sensor in LTE
Wu Haijun
Li Bin
Zou Minhan
Huang Weichao
Wang Yongping
IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC), 2011-11-17 ~ 2011-11-18, 2011
Summary
An 8-bit single-input successive approximation register (SAR) analog-to-digital converter (ADC) for long term evolution (LTE) system with an internal ring oscillator is implemented. A novel 5-bit resistor and 3-bit capacitor segment digital-to-analog converter (DAC) is used to minimize the chip area. The design was fabricated in a 0.13 mu m CMOS process with an area of 0.1mm(2) and a power of 1.2 mW. The measurement results show that the DNL and INL of the proposed ADC are +0.11/-0.18 LSB and +0.8/-0.04 LSB respectively. The SFDR and SNDR can get 53 dB and 43.3 dB respectively.
Keywords
LTE; SAR ADC; switched capacitor transceiver
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