Apparatus and methods for adaptive trip point detection
AssigneeMatrix Semiconductor, Inc.
InventorsTyler Thorp, Mark Johnson, Brent Haukness
Life of this patent
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Abstract
Apparatus and methods are described for providing an adaptive trip point detector circuit that receives an input signal at an input signal node and generates an output signal at an output signal node, the output signal changing from a first value to a second value when the input signal exceeds a trip point reference value. In particular, the trip point reference value is adjusted to compensate for variations in process or temperature, without requiring an externally-supplied reference signal.
Claims20
A trip point detector circuit that receives an input signal at an input signal node and generates an output signal at an output signal node, the output signal changing from a first value to a second value when the input signal exceeds a trip point reference value, the trip point detector circuit comprising:
- a circuit element that adjusts the trip point reference value to compensate for variations in process or temperature, without requiring an externally-supplied reference signal.
A method for adapting a trip point reference value of a trip point detector circuit that receives an input signal at an input signal node and generates an output signal at an output signal node, the output signal changing from a first value to a second value when the input signal exceeds the trip point reference value, the method comprising:
- adjusting the trip point reference value to compensate for variations in process or temperature, without requiring an externally-supplied reference signal.
A trip point detector circuit that receives an input signal at an input signal node and generates an output signal at an output signal node, the output signal changing from a first value to a second value when the input signal exceeds a trip point reference value, the trip point detector circuit comprising:
- a first transistor coupled between the input signal node and an internal node;
- a second transistor coupled between the internal node and the output signal node;
- and
- a controlled current source coupled to the internal signal node, the controlled current source adjusting the trip point reference value to compensate for variations in process or temperature, without requiring an externally-supplied reference signal.
A trip point detector circuit that receives an input signal at an input signal node and generates an output signal at an output signal node, the output signal changing from a first value to a second value when the input signal exceeds a trip point reference value, the trip point detector circuit comprising:
- a first transistor coupled between the input signal node and an internal node;
- a second transistor coupled between the internal node and the output signal node;
- and
- a controlled current source coupled to the output signal node, the controlled current source adjusting the trip point reference value to compensate for variations in process or temperature, without requiring an externally-supplied reference signal.
Dependencies are inferred from the claim text.