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US 10,541,652 B2Granted
Apparatus and method for filter settling calibration to improve speed of tracking and cancelling of DC offset
AssigneeIntel Corporation
InventorsCraig P. Finlinson, Nicholas P. Cowley, Mark S. Mudd
Life of this patent
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Abstract
Described is an apparatus which comprises: an amplifier to receive a reference voltage; and calibration logic which is operable to receive a first voltage and to provide the reference voltage to the amplifier, wherein the calibration logic is operable to generate a look-up table (LUT) that maps the first voltage to a drive current.
Claims18
An apparatus comprising:
- an amplifier to receive a reference voltage;
- calibration logic which is configured to receive a first voltage and to provide the reference voltage to the amplifier, wherein the calibration logic is configured to generate a look-up table (LUT) that maps the first voltage to a drive current;
- a current source to generate a first current in accordance with the drive current;
- and
- a current-to-voltage converter to convert the first current or a copy of the first current to the first voltage, wherein the first voltage is proportional to a resistance.
2 more elements
An apparatus comprising:
- an amplifier to receive a reference voltage in accordance with a first voltage, wherein the reference voltage is received at a first input of the amplifier, and wherein the amplifier has a second input which acts to sum to zero currents at the second input;
- calibration logic which is configured to receive the first voltage and to provide the reference voltage and a DC current which is added to the first current, wherein the calibration logic is configured to generate a look-up table (LUT) that maps the first voltage to a drive current and the DC current;
- a current source to generate the first current in accordance with the drive current;
- and
- a current-to-voltage converter to convert the first current or a copy of the first current to the first voltage which is proportional to a resistance.
2 more elements
Dependencies are inferred from the claim text.