N th order tunable low-pass continuous time filter for...

Details N th order tunable low-pass continuous time filter for... N th order tunable low-pass continuous time filter for...

2008-08-28

2010-12-14

Pascal, Robert (Department: 2817)

Amplifiers

Signal feedback

Frequency responsive feedback means

C330S085000

Reexamination Certificate

active

07852152

ABSTRACT:
According to one embodiment of the invention, a circuit comprising a plurality of operational transconductance amplifiers (OTAS) is described. The first OTA has differential input and differential output. The second OTA also has differential input, where a first output of the first OTA is coupled to the first differential input of the second OTA, which is an inverting input. A second output of the first OTA is coupled to the second input of the second OTA, which is a non-inverting input. The first differential output being coupled to a first input of the first OTA and the second differential output being coupled to a second input of the first OTA for negative feedback and current biasing.

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