CONTINUOUS-TIME SIGMA-DELTA MODULATOR USING A NOVEL RING AMPLIFIER ARCHITECTURE
Amr Ahmed Saad Ahmed;
Abstract
structure is the first of its kind in which it enables the usage of ring
amplifier in continuous time applications. The new structure design and
design equations is clarified with the help of a design example of second
order continuous time modulator. Then, the proposed architecture is
used to implement a more complex third order, 1.5 bit quantizer 4
modulator. The modulator is implemented in a 65nm CMOS technology
and can achieves a SNDR of 66 dB for a 5 MHz BW input signal while
consuming only 1.5 mW from a 0.9 V single supply. Hence, achieving a
Figure of Merit (FoM) of 92 fJ/Conv.
amplifier in continuous time applications. The new structure design and
design equations is clarified with the help of a design example of second
order continuous time modulator. Then, the proposed architecture is
used to implement a more complex third order, 1.5 bit quantizer 4
modulator. The modulator is implemented in a 65nm CMOS technology
and can achieves a SNDR of 66 dB for a 5 MHz BW input signal while
consuming only 1.5 mW from a 0.9 V single supply. Hence, achieving a
Figure of Merit (FoM) of 92 fJ/Conv.
Other data
| Title | CONTINUOUS-TIME SIGMA-DELTA MODULATOR USING A NOVEL RING AMPLIFIER ARCHITECTURE | Authors | Amr Ahmed Saad Ahmed | Issue Date | 2018 |
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