Simplified sallen-key low-pass filter circuit

Details Simplified sallen-key low-pass filter circuit Simplified sallen-key low-pass filter circuit

2011-02-01

2011-02-01

Nguyen, Hai L (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C327S552000

Reexamination Certificate

active

07880536

ABSTRACT:
Circuits, methods and devices for providing low-pass filtering are implemented according to a number of different embodiments. In one such embodiment a Sallen-Key low-pass filter circuit is implemented that comprises a first resistor and a second resistor connected in series, the first resistor being connected between the second resistor and an input of the circuit. The second resistor is directly connected between the first resistor and an output of the circuit.

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Yuanying Deng et al: “Design of a IV 250MHZ Current-Mode Filter in Conventional CMOS Process”; ISCAS 2001 Proceedings IEEE Sydney Australia May 6-9, 2001; vol. 1 of 5 pp. 236-239.
Schmid H et al: “Fundamental Frequency Limitations in Current-Mode Sallen-Key Filters” Circuits and Systems 1998 IEEE New York; US; vol. 1 May 31, 1998 pp. 57-60.

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