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US 5,673,047 AGranted
Gain-compensating differential reference circuit
AssigneeAnalog Devices, Inc.
InventorCarl W. Moreland
Life of this patent
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AssigneeAnalog Devices, Inc.
InventorCarl W. Moreland
Estimating the term…
A gain compensating differential reference circuit that is used to match the gain of an input differential amplifier, and track and hold circuit at the input of an analog-to-digital converter. The gain compensating differential reference circuit includes a single-to-differential converter to convert a V.sub.REF signal into a V.sub.REF+ and a V.sub.REF- signals whose difference equals the full-scale range of the differential analog input to the A/D converter, a gain matching differential amplifier to process to the differential output of the single-to-differential converter, and a gain matching track and hold circuit to process the output of the differential amplifier. The output of the gain matching track and hold circuit has the same gain and full-scale range as the analog signals processed by the input circuitry of the A/D converter along the analog path.
A compensating circuit for compensating for gain changes in a processing circuit, with the gain compensating circuit generating an output with a full-scale range substantially the same as an output of the processing circuit, comprising:
A compensating circuit for compensating for gain changes in a processing circuit, with the gain compensating circuit generating an output with a full-scale range substantially the same as an output of the processing circuit, comprising:
A circuit comprising:
A method compensating for gain changes in a processing circuit having an input circuit for providing an amplified signal to the processing circuit with a gain, the method comprising the steps of:
Dependencies are inferred from the claim text.