Floating point amplifier
AssigneeTexaco Development Corporation
InventorRonald G. Gillespie
Life of this patent
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Abstract
A wide dynamic range automatic gain ranging amplifier system includes an amplifier which receives an analog input signal and amplifies the received analog input signal in accordance with gain control signals to provide an amplified signal. A network connected to the amplifier also receives the analog input signal and provides the gain control signals corresponding to a desired gain for the amplifier in accordance with the received input signal and also provides gain status signals representative of the gain associated with the amplified signal.
Claims10
A wide dynamic range automatic gain ranging amplifier system comprising
- means for receiving an analog input signal to provide a received input signal,
- amplifier means connected to the receiving means for amplifying a received analog input signal provided by the receiving means in accordance with gain control signals to provide an amplified signal,
- gain signal means connected to the receiving means and to the amplifier means for providing the gain control signals to the amplifier means corresponding to a desired gain for the amplifier means in accordance with the received input signal and in a manner so as to substantially instantaneously control the gain of the amplifier means and for providing gain status signals representative of the gain associated with the amplified signal in binary digital form,
- and
- and analog-to-digital converter means connected to the amplifier means and providing digital signals corresponding to the amplified signal;
- and
- said gain signal means includes means connected to the receiving means for comparing a received analog input signal with a plurality of reference input signals and providing corresponding comparison signals, each reference input signal being representative of a ratio of a value, corresponding to a predetermined fractional full scale capability of the analog-to-digital converter means, to a different predetermined gain fo the amplifier means,
- and
- decoding means connected to the comparing means for decoding the comparison signals so as to substantially instantaneously provide the gain control signals and the gain status signals.
A wide dynamic range automatic gain ranging amplifier system comprising
- variable gain amplifier means for amplifying an analog input signal to provide an amplified signal, and
- means for substantially instantaneously controlling the gain of the amplifier means in accordance with the analog input signal, and
- analog-to-digital converter means connected to the amplifier means for converting the amplified signal to digital signal;
- and
- said gain control means includes means for providing a plurality of reference input signals, each reference input signal corresponding to a ratio of a value, representative of a predetermined fractional full scale capability of the analog-to-digital converter means, to a different predetermined gain for the amplifier means, and
- a plurality of comparator means for comparing the reference input signals with the analog input signal being applied to the amplifier means and providing corresponding comparison signals, each comparator means comparing a different reference input signal with the analog input signal, and
- logic means connected to all the comparator means and to the amplifier means for providing the gain control signals to the amplifier means and for providing the gain status signals in accordance with the comparison signals.
Dependencies are inferred from the claim text.