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US 2010/0148876 A1Published application
Amplifier Arrangement and Method for Amplifying a Signal
Assigneeaustriamicrosystems AG
InventorsThomas Fröhlich, Nicole Heule
Life of this patent
Estimating the term…
Abstract
An amplifier arrangement has an amplifier (3) with a signal input (31), a feedback input (32) and a signal output (33). A first coupling path (FB1), which has a first impedance element (R1), connects the feedback input (32) to the signal output (33). A second coupling path (FB2) has a filter device (4), a buffer circuit (5) and a second impedance element (R2) connected in series, and connects the feedback input (32) to the signal output (33) or to the signal input (31).
Claims18
An amplifier arrangement, comprising:
- an amplifier with a signal input, a feedback input and a signal output;
- a first coupling path which has a first impedance element and which connects the feedback input to the signal output;
- and
- a second coupling path which has a filter device, a buffer circuit, and a second impedance element and a voltage source connected in series, and which connects the feedback input to the signal output or to the signal input, wherein the series circuit is coupled via the voltage source to the signal output or to the signal input.
1 more element
(canceled)
A method for amplifying a signal, comprising the steps of:
- amplifying an input signal depending on a first and a second loop signal, and providing an output signal generated from the input signal;
- generating a first loop signal from the output signal depending on a first impedance;
- applying an offset signal to the input signal or to the output signal;
- generating an intermediate signal by filtering and buffering of the input signal or of the output signal;
- and
- generating a second loop signal from the intermediate signal depending on a second impedance.
3 more elements
(canceled)
Dependencies are inferred from the claim text.