The S3AD5M14BC18 is an ultra-low-power and ultra-low area 14-bit sigma-delta (SD) ADC IP operating up to 5.5MS/s and dissipating only 200uW (ADC core) over a 0.9V supply. The measured dynamic range is about 82dB for an input signal bandwidth of 10kHz.
The digital filters are not included in the IP core (e.g. decimation filter and programmable low-pass/band-pass filter).
Dynamic performance highlights considering an input signal with 2.5kHz frequency and 5MS/s sampling rate (OSR=256) include an SNR of 81dB, SNDR of 78dB and DR of 82dB.
Auxiliary circuits comprising a low-noise bandgap reference and voltage reference buffers are also included to provide a complete ADC solution. Moreover, a dedicated cascaded DFLP/BP digital filter can be designed for each specific application.