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This paper presents a 12-bit 5MS/s pipeline analog-to-digital converter implemented in a 0.5μm CMOS technology for aerospace extreme environment applications with cryogenic and radiation tolerant capability. It is capable of working under ultra-wide temperature range from -180°C to +120°C and at ultra low temperature of -230°C. To achieve higher sampling rate and lower power, time-interleaved architecture...
A 3-bit ADC for X-band applications that can work at a sampling rate of 11 GS/s is presented in this paper. Current comparators are used to achieve the high sampling rate of 11 GHz at X-band. A 3-bit current-steering DAC is also designed for testing the high-speed ADC. The ADC-DAC RFIC is implemented in a 0.12 mum SiGe technology and occupies a core area of 1.0 x 0.8 mm2. The ADC can operate with...
A 3-bit analog-to-digital converter (ADC) for software defined radio applications that can work at a sampling rate of 20 GS/s is presented in this paper. In order to operate at Ku-band, two flash current mode logic (CML) ADCs are time-interleaved to achieve a 20 GHz sampling rate. A 3-bit current-steering digital-to-analog converter (DAC) is also designed for testing the high-speed ADC. The ADC-DAC...
We present an efficient approach for on-chip frequency response measurement, including phase and gain, of analog circuitry in mixed-signal systems. The approach uses direct digital synthesizer (DDS) to supply test sine waves with different frequencies and phases. The output response is analyzed using a multiplier and accumulator. The resultant phase delay measurement is used to correct other measurements...
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