摘要
A single channel 2-GS/s 6-bit ADC with cascade resistive averaging and self foreground calibration is demonstrated in 0.18-μm CMOS.The calibration method based on DAC trimming improves the linearity and dynamic performance further.The peak DNL and INL are measured as 0.34 and 0.22 LSB,respectively.The SNDR and SFDR have achieved 36.5 and 45.9 dB,respectively,with 1.22 MHz input signal and 2 GS/s.The proposed ADC,including on-chip track-and-hold amplifiers and clock buffers,consumes 570 mW from a single 1.8 V supply while operating at 2 GS/s.
A single channel 2-GS/s 6-bit ADC with cascade resistive averaging and self foreground calibration is demonstrated in 0.18-μm CMOS.The calibration method based on DAC trimming improves the linearity and dynamic performance further.The peak DNL and INL are measured as 0.34 and 0.22 LSB,respectively.The SNDR and SFDR have achieved 36.5 and 45.9 dB,respectively,with 1.22 MHz input signal and 2 GS/s.The proposed ADC,including on-chip track-and-hold amplifiers and clock buffers,consumes 570 mW from a single 1.8 V supply while operating at 2 GS/s.
