Low-Power G(m)-C Filter Employing Current-Reuse Differential Difference Amplifiers

作者：Mincey John S; Briseno Vidrios Carlos; Silva Martinez Jose; Rodenbeck Christopher T

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2017, 64(6): 635-639.

DOI：10.1109/TCSII.2016.2599027

• Active filters
• continuous-time filters
• differential difference amplifier (DDA)
• operational transconductance amplifier (OTA)-C filters
• transconductance-C

This paper deals with the design of low-power high-performance continuous-time filters. The proposed operational transconductance amplifier architecture employs current-reuse differential difference amplifiers in order to produce more power-efficient Gm-C filter solutions. To demonstrate this, a sixthorder low-pass Butterworth filter was designed in a 0.18-mu m CMOS, achieving a 65-MHz -3-dB frequency, an in-band input-referred third-order intercept point of 12 dBm, and an input-referred noise density of 40 nV/Hz(1/2), while only consuming 8.07 mW from a 1.8-V supply and occupying a total chip area of 0.21 mm(2) with a power consumption of only 1.19 mW per pole.

• 出版日期2017-6