en 2-Integrated Circuits: Digital, Analog Integrated Circuits: Digital, Analog Research Paper Research Paper A two stage sub-µW Inverter-based switched-capacitor amplifier-filter is presented which is capable of amplifying both spikes and local field potentials (LFP) signals. Here we employ a switched capacitor technique for frequency tuning and reducing of 1/f noise of two stages. The reduction of power consumption is very necessary for neural recording devices however, in switched capacitor (SC) circuits OTA is a major building block that consumes most of the power. Therefore an OTA-less technique utilizing a class-C inverter is employed that significantly reduces the power consumption. A detailed analysis of noise performance for the inverter-based SC circuits is presented. A mathematical model useful for analysis of such SC integrators is derived and a good comparison is obtained between simulation and analytical technique. With a supply voltage of 0.7V and using 0.18 µm CMOS technology, this design can achieves a power consumption of about 538 nW. The designed amplifier-filter has the gains 18.6 dB and 28.2 dB for low pass only and cascaded filter, respectively. By applying different sampling frequencies, the filter attains a reconfigurable bandwidth. Amplifier-Filter,Inverter-Based Switched-Capacitor Circuit,Neural Recording, 224 231 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-599-2&slc_lang=en&sid=1 A Ghorbani-Nejad a.ghorbani@modares.ac.ir 180031947532846002849 180031947532846002849 No Tarbiat Modares University A Jannesari Jannesari@modares.ac.ir 180031947532846002850 180031947532846002850 Yes Tarbiat Modares University