Integrated circuit with an input multiplexer system
AssigneeNXP USA, Inc.
InventorsCarmelo Morello, Hanqing Xing, Ranga Seshu Paladugu, Soon G. Lim
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Abstract
An integrated circuit includes a multiplexer circuit configured to provide an output signal on a conductive line, a programmable gain amplifier having a non-inverting input connected to the conductive line to receive the output signal from the multiplexer, a slew rate adjust circuit connected at a first node on the conductive line between the multiplexer circuit and the programmable gain amplifier, a first switch including a first terminal connected to the first node and a second terminal connected to the input of the programmable gain amplifier, and a low pass filter connected between the first and second terminals of the first switch.
Claims20
An integrated circuit, comprising:
- a multiplexer circuit configured to provide an output signal on a conductive line;
- a programmable gain amplifier having a non-inverting input connected to the conductive line to receive the output signal from the multiplexer;
- a slew rate adjust circuit connected at a first node on the conductive line between the multiplexer circuit and the programmable gain amplifier;
- a first switch including a first terminal connected to the first node and a second terminal connected to the input of the programmable gain amplifier;
- and
- a low pass filter connected between the first and second terminals of the first switch.
An integrated circuit, comprising:
- a multiplexer including multiple inputs, a first control input, and an output;
- a programmable gain amplifier coupled to the output of the multiplexer;
- a slew rate adjust circuit coupled to the programmable gain amplifier, the amplifier slew rate adjust circuit including:
- a current source including a first terminal coupled to a supply voltage and a second terminal coupled between the output of the multiplexer and the programmable gain amplifier;
- and
- an analog to digital converter coupled to an output of the programmable gain amplifier.
An integrated circuit comprising:
- a multiplexer including multiple inputs, an output, and a control input;
- a programmable gain amplifier including a first input, a second input, and an output;
- a first switch including a first terminal coupled to the output of the multiplexer and a second terminal coupled to the first and second inputs of the programmable gain amplifier;
- and
- a low pass filter circuit including a resistive element and a capacitive element, the resistive element is coupled in parallel with the first switch and the capacitive element includes a first terminal coupled to the second terminals of the first switch and the resistive element, and a second terminal coupled to ground.
Dependencies are inferred from the claim text.