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. Author manuscript; available in PMC: 2017 May 8.
Published in final edited form as: Anal Chem. 2014 Jun 18;86(13):6425–6432. doi: 10.1021/ac500862v

Table 2. Electrical Characteristics of the Main Circuit Blocks.

1st Order Sigma-Delta Converter
range 1 μA 100 nA 10 nA
bandwidth 230 Hz 230 Hz 340 Hz
ENOB 11.9 bit 10.1 bit 6.8 bit
2nd Order Sigma-Delta Converter
range 1 μA 100 nA 10 nA 1 nA
BW 1 kHz 1 kHz 1 kHz 130 Hz
int. RMS noise 250 pA 16.8 pA 3.2 pA 540 fA
ENOB 13.3 bit 11.6 bit 10 bit 7.9 bit
Potentiostat
slew rate 350 kV/s
sweep rate 0–300 V/s