Translinear Transconductor Design for Cochlear Filter Banks
نویسندگان
چکیده
The ve major requirements of a transconductance-C integrator for use in cochlear lter banks are: low voltage, low power, small area, wide tuning range, and high dynamic range. The BiCMOS transconductor of Andreou and Liu [1], which incorporates MOSTs operating in strong and weak inversion and a bipolar current multiplier, simultaneously satis es all of these design criteria. Moreover, each stage of the transconductor can be optimized in order to achieve the best overall performance. A similar design strategy can be applied to MOSFET-C implementations.
منابع مشابه
A Novel-Class AB Transconductor suitable for High Speed CMOS Operational Amplifier
A novel class-AB transconductance amplifier, suitable for the input stage of high slew rate CMOS operational amplifier is proposed. The proposed class-AB transconductor is realized from a differential pair of mixed translinear common-drain push-pull circuit. A high speed operational amplifier employing the proposed input stage and a complementary common –source high gain stage is presented. HSP...
متن کاملClass-AB Square-Root Domain Filters Based on the Floating
In this paper a new approach for design of class-AB current-mode square-root domain filters based on the electronically simulated translinear loop principle is presented. FG-MOS transistors that operate in strong inverted saturation region are employed for implementation of translinear loop circuit. The filter achieves immunity to body effect, low circuit complexity, large input dynamic ran...
متن کاملLog-Domain Filters Based on LC Ladder Synthesis
A design method is proposed for the synthesis of linear, high-order, continuous-time filters using a unique translinear integrator circuit. Unlike previous attempts at incorporating translinear circuits into filter design, the proposed theory makes explicit use of the exponential nature of the bipolar transistor. This technique is based on the operational simulation of LC ladders. A 5th-order C...
متن کاملAn Efficient Algorithm to Design Nearly Perfect-Reconstruction Two-Channel Quadrature Mirror Filter Banks
In this paper, a novel technique for the design of two-channel Quadrature Mirror Filter (QMF) banks with linear phase in frequency domain is presented. To satisfy the exact reconstruction condition of the filter bank, low-pass prototype filter response in pass-band, transition band and stop band is optimized using unconstrained indirect update optimization method. The objective function is form...
متن کاملSyllabic-Companding Log Domain Filters
A general theory for companding log domain filters is proposed which combines not only exponential mappings, but also a new translational mapping approach which guarantees suitable operating conditions in any log domain filter. The filter equations resulting from the use of the theory ultimately contain translinear terms which are known to be realizable using translinear techniques. A discussio...
متن کامل