摘要:
A method and apparatus that uses the difference between two nodal voltages, such as a temperature-independent voltage and a temperature-dependent voltage, to determine the actual temperature at a point on an integrated circuit is provided. Further, a method and apparatus that converts a difference between nodal voltages in an integrated circuit from an analog to a digital quantity on the integrated circuit such that the difference in voltage may be used by an on-chip digital system is provided. Further, a method and apparatus for quantifying a difference in voltage between a first node and a second node of a temperature sensor is provided.
摘要:
An apparatus that uses a linear voltage regulator to reject power supply noise in a temperature sensor is provided. Further, a method for using a linear voltage regulator to reject power supply noise in a temperature sensor is provided. Further, a method and apparatus that uses a differential amplifier with a source-follower output stage as a linear voltage regulator for a temperature sensor is provided.
摘要:
A method for using a low voltage power supply to generate a temperature-independent voltage and temperature-dependent voltage is provided. Further, an apparatus that uses a low voltage power supply to generate a temperature-independent voltage and temperature-dependent voltage is provided. The apparatus generates a temperature-dependent voltage and a temperature-independent voltage using an amplifier stage that generates a feedback signal; a startup stage that generates a startup signal dependent on the feedback signal; and an output stage that outputs the temperature-dependent voltage and the temperature-independent voltage dependent on the feedback and startup signals.
摘要:
An adjustment and calibration system for post-fabrication treatment of an on-chip temperature sensor is provided. As explained in detail below, the adjustment and calibration system includes at least one adjustment circuit, to which the on-chip temperature sensor is responsive, and a storage device that selectively stores control information (1) associated with a state of the adjustment circuit and/or (2) from a tester that writes such control information to the storage device, where the control information stored in the storage device is subsequently selectively read out in order to adjust the adjustment circuit to a state corresponding to the control information.
摘要:
A temperature sensor adapted to produce a temperature-independent voltage and temperature-dependent voltage dependent on an internal control signal, generated within the temperature sensor, adjustable by an adjustment circuit operatively connected to the temperature sensor is provided. The adjustment circuit is controllable to adjust the internal control signal in order to modify an operating characteristic of the temperature sensor.
摘要:
A method and apparatus for regulating resonance in a computer system I/O interface is provided. A shunting impedance/resistance is arranged across a power supply of the I/O interface. The shunting impedance/resistance is controlled by circuitry that is arranged to detect voltage overshoot conditions in the I/O interface. The circuitry has (1) an analog front end that is arranged to detect power supply oscillations relative to a grounded terminal, (2) an amplifier (or logic conversion circuit) that is arranged to convert an output signal from the analog front end to a digital signal, and (3) a shunting apparatus arranged to modify power supply behavior in the I/O interface dependent on the digital signal.
摘要:
A method and apparatus for reducing an impedance of a power supply path of an integrated circuit is provided. The power supply path includes a first power supply line and a second power supply line to provide power to the integrated circuit. At least one resistive element connected between the first power supply line and the second power supply line is adjusted to reduce the impedance of the power supply path.
摘要:
A phase locked loop that includes a receiver circuit for matching delays of a system clock and a feedback clock at an input of the phase locked loop is provided. The receiver circuit employs system clock path circuitry to input the system clock and feedback clock path circuitry to input the feedback clock, where current flow and load resistances associated with the system clock path circuitry and current flow and load resistances associated with the feedback clock path circuitry control the generation of substantially delay matched system and feedback clocks.
摘要:
A technique Readjusting a bias-generator in a delay locked loop after fabrication of the delay locked loop. The technique involves use of an adjustment circuit operatively connected to the bias-generator, where the adjustment circuit is controllable to facilitate a modification of a voltage output by the bias-generator. Such control of the voltage output by the bias-generator allows a designer to achieve a desired delay locked loop performance characteristic after the delay locked loop has been fabricated.
摘要:
A digital delay locked loop uses a delay array to delay an input signal by an amount indicated by a delay code. A phase of the resulting delayed signal is compared to a corresponding phase of the input signal, and dependent on the comparison, the delay code is updated to indicate whether the delay array needs to provide more delay or less delay. The digital delay locked loop also uses a detection circuit that monitors for a predetermined condition of the delay code. In response to detection of the predetermined condition, the delay code is automatically reset to a value different than a value of the delay code present at a previous reset or initial startup of the digital delay locked loop.