Micro Power 14-bit RSD A/D Converter L. GRISONI, A. HEUBI, P. BALSIGER and F. PELLANDINI
نویسندگان
چکیده
Micro power converters are required for power sensitive, battery-operated devices. Keeping this goal in mind IMT developed a 13-bit RSD cyclic converter. However, inaccuracies (capacitor mismatch, operation amplifier...) resulted in a relative precision behaviour. The implementation of a correction algorithm in a 2 μ m CMOS technology is presented. It requires 1 mm 2 and simulations show that power consumption is less then 10 μ W at 1.25 V. Consequently a fully linear 13-bit A/D converter featuring about 60 μ W power consumption at 16 kHz and ± 1.25 V is feasible and will soon be realized as MPW.
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