• Truncation error shaping using the NS-SAR ADC

• 1st-order DT DSM with CDS integrator and 2nd-order NS SAR quantizer

Architecture

• SNDR(Signal to Noise/Distortion Ratio) : 94.5dB at 500Hz BW

• IRN(Input Referred Noise) : 0.174 µV/√Hz

Performance - SNDR, IRN

• CMRR(Common Mode Rejection Ratio) : over 80dB at 100Hz BW

• Zin(Input Impedance) : over 100MΩ at 100Hz BW(208MΩ at 10Hz BW)

Performance - CMRR, Zin, Two-tone, Real ECG