A digital CMOS DNA chip

@article{Frey2005ADC,
  title={A digital CMOS DNA chip},
  author={Alexander Frey and Meinrad Schienle and Christian Paulus and Z. Jun and Franz Hofmann and Petra Schindler-Bauer and Birgit Holzapfl and Melanie Atzesberger and Gottfried Beer and Michaela Fritz and Thomas Haneder and Hans-Christian Hanke and Roland Thewes},
  journal={2005 IEEE International Symposium on Circuits and Systems},
  year={2005},
  pages={2915-2918 Vol. 3}
}
A fully electronic medium density DNA micro array is presented using a CMOS process extended by gold electrodes. The chip provides 128 sensor sites, in-sensor site current-mode A/D conversion, peripheral circuitry including bandgap and current references, D/A-converters to provide electrode bias voltages, calibration circuitry, and a 6 pin interface for power supply and serial digital data transfer. 
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