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US 2016/0238635 A1Published application
Offset voltage compensation
AssigneeInfineon Technologies AG
InventorJuergen Zimmer
Life of this patent
Estimating the term…
Abstract
A bridge offset voltage compensation method and circuit having a bridge circuit and a tunnel magnetoresistance (TMR) resistor cascade. The bridge circuit includes a branch circuit. The TMR resistor cascade is coupled in series with the branch circuit, and is configured to provide a resistance to compensate for a bridge offset voltage of the bridge circuit.
Claims20
A bridge offset voltage compensation circuit, comprising:
- a bridge circuit having a first branch circuit;
- and
- a tunnel magnetoresistance (TMR) resistor cascade coupled in series with the first branch circuit, and configured to provide a resistance to compensate for a bridge offset voltage of the bridge circuit.
A bridge offset voltage compensation circuit, comprising:
- a bridge circuit having a first branch circuit;
- and
- a first cascade of resistors coupled in series with the first branch circuit and having a positive temperature coefficient;
- and
- a second cascade of resistors coupled in series with the first branch circuit and the first cascade of resistors, and having a negative temperature coefficient,
- wherein the first and second cascades of resistors are configured to provide a resistance to compensate for a bridge offset voltage of the bridge circuit, and the bridge offset voltage has a temperature coefficient of zero or substantially close to zero.
3 more elements
A method of compensating for a bridge offset voltage, comprising:
- providing a bridge circuit having a branch circuit;
- providing a tunnel magnetoresistance (TMR) resistor cascade coupled in series with the branch circuit;
- measuring a bridge offset voltage of the bridge circuit;
- and
- configuring, based on the measured bridge offset voltage, the resistance of the TMR resistor cascade to compensate for the bridge offset voltage of the bridge circuit.
2 more elements
Dependencies are inferred from the claim text.