Texas Instruments Corporation

Kunal Suresh Karanjkar

Nitin Kumar Agarwal

Venkata Ramanan R

Aniruddha Roy

Per Torstein Roine

Srinivasa Chakravarthy

Harikrishna Parthasarathy

Venkata Ramanan

Venkatesh Kadlimatti

Khyati Bansal

An example device includes: switch circuitry configured to: connect, in a first state based on a control signal, a first switch input to a first switch output and a second switch input to a second switch output; and connect, in a second state based on the control signal, the first switch input to the second switch output and the second switch input to the first switch output; an operational amplifier configured to: generate, in response to the control signal, a first voltage based on a gain and the connections in the first state; and generate, in response to the control signal, a second voltage based on the gain and the connections in the second state; and an Analog to Digital Converter (ADC) configured to convert the first voltage and the second voltage into a digital value based on a multiplication of the input voltage and the gain.

Methods and apparatus to reduce error in operational amplifiers

Methods, apparatus, systems, and articles of manufacture are disclosed corresponding to a voltage regulator. An example circuit includes an output terminal; a first transistor including a current terminal and a control terminal coupled to an output terminal; a second transistor including a control terminal and a current terminal coupled to the control terminal of the first transistor; a third transistor including a first current terminal and a second current terminal, the first current terminal of the third transistor coupled to the output terminal; current mirror circuitry including a terminal coupled to the second current terminal of the third transistor; and inverter circuitry including an input terminal and an output terminal, the input terminal coupled to the terminal of the current mirror and the second current terminal of the third transistor, the output terminal coupled to the control terminal of the second transistor.

Voltage regulator

Aspects of the description provide for a circuit. In some examples, the circuit includes a input pair of transistors, a bias transistor having a bias transistor gate, a bias transistor drain, and a bias transistor source, the bias transistor drain coupled to the input pair of transistors and the bias transistor source coupled to ground, and a resistor coupled between the bias transistor gate and the input pair of transistors.

Class-AB stabilization

A circuit includes a first switch assembly having a first input node and a first output node, and a second switch assembly having a second input node and a second output node. The circuit further includes a third switch assembly an operational amplifier, and a buffer. The third switch assembly has a third input node and a third output node. The third input node is coupled to the second output node, and the third output node is coupled to the first output node. The buffer has a buffer input and a buffer output. The buffer input is coupled to an input stage of the operational amplifier. The buffer output is coupled to the third switch assembly.

Multi-channel multiplexer

Enhanced operational amplifier trim circuitry and techniques are presented herein. In one implementation, a circuit includes a reference circuit configured to produce a set of reference voltages, and a digital-to-analog conversion (DAC) circuit. The DAC circuit comprises a plurality of transistor pairs, where each pair among the plurality of transistor pairs is configured to provide portions of adjustment currents for an operational amplifier based at least on the set of reference voltages and sizing among transistors of each pair. The circuit also includes drain switching elements coupled to drain terminals of the transistors of each pair and configured to selectively couple one or more of the portions of the adjustment currents to the operational amplifier in accordance with digital trim codes.

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Bengaluru, India

Kunal Suresh Karanjkar