Low-power G_m-C filter employing current-reuse differential difference amplifiers

Journal Article · Wed Aug 10 00:00:00 EDT 2016 · IEEE Transactions on Circuits and Systems. II, Express Briefs

DOI:https://doi.org/10.1109/tcsii.2016.2599027· OSTI ID:1291339

Mincey, John S. ^[1]; Briseno-Vidrios, Carlos ^[2]; Silva-Martinez, Jose ^[1]; Rodenbeck, Christopher T. ^[3]

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1. Texas A & M Univ., College Station, TX (United States)
2. Texas A & M Univ., College Station, TX (United States); Silicon Labs, Austin, TX (United States)
3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); U.S. Naval Research Lab, Washington, D.C. (United States)

This study deals with the design of low-power, high performance, continuous-time filters. The proposed OTA architecture employs current-reuse differential difference amplifiers in order to produce more power efficient Gm-C filter solutions. To demonstrate this, a 6th order low-pass Butterworth filter was designed in 0.18 m CMOS achieving a 65-MHz -3-dB frequency, an in-band input-referred third-order intercept point of 12.0 dBm, and an input referred noise density of 40 nV/Hz1=2, while only consuming 8.07 mW from a 1.8 V supply and occupying a total chip area of 0.21 mm2 with a power consumption of only 1.19 mW per pole.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1291339
• Alternate ID(s): OSTI ID: 1340240
• Report Number(s): SAND--2016-7568J; 646391
• Journal Information: IEEE Transactions on Circuits and Systems. II, Express Briefs, Journal Name: IEEE Transactions on Circuits and Systems. II, Express Briefs; ISSN 1549-7747
• Publisher: IEEE
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
OTA-C filters
active filters
continuous-time filters
differential difference amplifier
transconductance-C