This chapter has addressed some topics in gm-C filter design. Two integrator loop, LC ladder-based and multiple loop feedback OTA-C filter structures have been studied. Design examples using a wideband high output resistance OTA have been presented. Current-mode gm-C filters have been discussed and compared with voltage-mode counterparts. Tuning issues including both analogue and digital schemes have been discussed.
Architectures and design of OTA/gm-C filters, Page 1 of 2
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