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US 12,519,430 B2Granted
Enhanced amplifier topology in an analog front end (AFE)
AssigneeTexas Instruments Incorporated
InventorsSravana Kumar Goli, Nagesh Surendranath, Srinivas Bangalore Seshadri, Sandeep Kesrimal Oswal
Life of this patent
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Abstract
In described examples, a circuit includes an integrator. The integrator generates a first signal responsive to an input signal. A trigger circuit is coupled to the integrator and receives the first signal. A charge dump circuit is coupled to the integrator and the trigger circuit. The trigger circuit modifies configuration of the charge dump circuit and the integrator when the first signal is greater than a first threshold.
Claims27
A circuit comprising:
- an amplifier having an input terminal and an output terminal, the amplifier including a first transconductor having an output terminal, a second transconductor having an input terminal and a third transconductor having an input terminal;
- a first capacitor coupled between the input terminal of the amplifier and the output terminal of the amplifier;
- and
- a comparator coupled to the output terminal of the amplifier, the comparator configured to generate a first signal, and the amplifier, responsive to the first signal, is configured to couple the output terminal of the first transconductor to the input terminal of the second transconductor and is configured to decouple the output terminal of the first transconductor from the input terminal of the third transconductor.
1 more element
A method comprising:
- generating a first signal by an integrator on receiving an input signal, the integrator includes an amplifier and a first capacitor, and the amplifier having a first transconductor having an output terminal, a second transconductor having an input terminal, and a third transconductor having an input terminal;
- generating a second signal when the first signal is greater than a first threshold;
- and
- coupling, on receiving the second signal, the output terminal of the first transconductor to the input terminal of the second transconductor and decoupling, on receiving the second signal, the output terminal of the first transconductor from the input terminal of the third transconductor.
1 more element
An imaging system comprising:
- an x-ray source configured to generate x-rays;
- and
- a receiver configured to receive x-rays, the receiver comprising a plurality of detectors, and at least one detector of the plurality of detectors comprising:
- an amplifier having an input terminal and an output terminal, the amplifier including a first transconductor having an output and a second transconductor having an input
- a first capacitor coupled between the input terminal of the amplifier and the output terminal of the amplifier;
- and
- a comparator coupled to the output terminal of the amplifier, the comparator configured to generate a first signal, and the amplifier, responsive to the first signal, is configured to couple the output terminal of the first transconductor to the input terminal of the second transconductor.
4 more elements
A circuit comprising:
- an integrator configured to generate a first signal responsive to an input signal;
- the integrator including:
- an amplifier, the amplifier including a first transconductor having an output terminal, a second transconductor having an input terminal and an RC network coupled between the output terminal of the first transconductor and the input terminal of the second transconductor;
- and
- a first capacitor coupled between the input terminal of the amplifier and the output terminal of the amplifier;
- and
- a comparator coupled to the integrator and configured to receive the first signal, the comparator configured to decouple the output terminal of the first transconductor and the RC network.
4 more elements
Dependencies are inferred from the claim text.