The analog circuits which consume very low power are on high demand in recent years. In this paper active high pass Gm-C filters are designed which operate at low voltage and also have cut-off frequencies around 500 Hz. A PMOS differential pair transconductor with series parallel technique to obtain low transconductance of 24.63 nS operating with 1.6 V supply is used in the design of first order and bi-quad filter. The power consumed by the first order filter is 57.66 nW and that of bi-quad filter is 385.42 nW. The filters are designed and simulated in Cadence virtuoso tool using gpdk 180 nm CMOS technology.
Volume 11 | Issue 7