Microcontroller having an on-chip high gain amplifier
First Claim
Patent Images
1. A microcontroller chip, comprising:
- a processor for executing program instructions;
an array of configurable circuit blocks configured to perform a circuit function, such circuit blocks configured to produce an analog output signal; and
an on-chip analog amplifier having an input receiving the analog output signal and producing an amplified output signal suitable for driving a loudspeaker external to the microcontroller chip.
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Abstract
A microcontroller includes a wide band, high gain amplifier on-chip capable of driving a 32 ohm speaker. The amplifier is controllable by the microcontroller processor to either enable or disable the amplifier and switch between multiple modes of power. In one embodiment, one or more such amplifiers are situated anywhere on the integrated circuit die including at the corners of the die.
89 Citations
20 Claims
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1. A microcontroller chip, comprising:
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a processor for executing program instructions; an array of configurable circuit blocks configured to perform a circuit function, such circuit blocks configured to produce an analog output signal; and an on-chip analog amplifier having an input receiving the analog output signal and producing an amplified output signal suitable for driving a loudspeaker external to the microcontroller chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A microcontroller chip, comprising:
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a processor for executing program instructions; an array of configurable digital circuit blocks configured to perform a digital circuit function; an array of configurable analog circuit blocks configured to perform an analog circuit function, such analog circuit blocks configured to produce an analog output signal; and an on-chip CMOS analog amplifier having an input receiving the analog output signal and producing an amplified output signal suitable for driving a loudspeaker external to the microcontroller chip. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A microcontroller chip, comprising:
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a processor for executing program instructions; an array of configurable digital circuit blocks configured to perform a digital circuit function; an array of configurable analog circuit blocks configured to perform an analog circuit function, such analog circuit blocks configured to produce an analog output signal; an on-chip tristateable CMOS analog amplifier having an input receiving the analog output signal and producing an amplified output signal suitable for driving a loudspeaker external to the microcontroller chip, wherein a tristate mode of the tristate CMOS analog amplifier is selectably controlled by the processor; a switchable current source for selectively providing an increase in bias current to the on-chip analog amplifier under control of the processor; wherein the microcontroller chip has four corners, and wherein the on-chip analog amplifier is situated adjacent one of the four corners. - View Dependent Claims (19, 20)
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Specification