Abstract: A method for smelting low-phosphorus high-manganese steel based on reduction dephosphorization of ferromanganese is provided in the present application, relating to the technical field of high-manganese steel smelting, where the dephosphorization of ferromanganese is carried out under reducing atmosphere conditions through mediate-frequency induction furnace to obtain molten ferromanganese with lower phosphorus content, which is subsequently mixed with low phosphorus molten steel obtained by smelting in oxidative period of electric arc furnace in LF ladle refining furnace to make the Mn content of steel reach the requirement of high-manganese steel, and smelting is carried out under the condition of reducing atmosphere by adjusting the composition and temperature of the molten steel to meet the requirements of the target composition of the steel grade before tapping the steel.

Abstract: The present disclosure relates to a signal generator with self-calibration including a main digital-to-analog converter (DAC), a calibration DAC, a summing buffer structure, a two-path filter structure, an analog-to-digital converter (ADC), and a control system. The main DAC provides a main DAC output signal with main DAC distortion. The main DAC output signal is calibrated by a calibration DAC output signal to correct at least a portion of the main DAC distortion. The calibration DAC output signal includes information about the main DAC distortion and is generated by a feedback loop including the summing buffer structure, the two-path filter structure, the filter buffer, the ADC, the control system, and the calibration DAC.

Abstract: A method for testing an analog-to-digital converter is disclosed. In an implementation, the method may include providing input data to analog-to-digital converter circuitry. The analog-to-digital converter circuitry generates an output code based upon the input data. The method includes generating expected output code based upon the corresponding input data and generating an output code error signal based upon the difference of the output code and the expected output code. A predicted code error signal is modeled based upon corresponding code. The method also includes generating a noise error signal representing a difference between the output code error signal and the predicted code error.

Abstract: A method for testing an analog-to-digital converter is disclosed. In an implementation, the method may include providing input data to analog-to-digital converter circuitry. The analog-to-digital converter circuitry generates an output code based upon the input data. The method includes generating expected output code based upon the corresponding input data and generating an output code error signal based upon the difference of the output code and the expected output code. A predicted code error signal is modeled based upon corresponding code. The method also includes generating a noise error signal representing a difference between the output code error signal and the predicted code error.

Abstract: A method of testing an analog and/or mixed-signal circuit can be used in either a production or a built-in self test environment. The method includes generating an excitation signal for testing by using dynamic element matching for performance enhancement of the test signal generator that applies an excitation, and/or by measuring an output of the DUT using dynamic element matching for performance enhancement of an output measurement device. Signal generators and circuits using aspects of the method are also discussed.

Abstract: A method for testing a circuit includes determining at least one performance characteristic of the circuit based on a functional relationship between excitation signals or on a functional relationship between measurement devices. The method is implemented either as a part of a built-in self test circuit of an integrated circuit or for production testing.

Abstract: A method for testing a circuit includes determining at least one performance characteristic of the circuit based on a functional relationship between excitation signals or on a functional relationship between measurement devices. The method is implemented either as a part of a built-in self test circuit of an integrated circuit or for production testing.

Abstract: A method of testing an analog and/or mixed-signal circuit can be used in either a production or a built-in self test environment. The method includes generating an excitation signal for testing by using dynamic element matching for performance enhancement of the test signal generator that applies an excitation, and/or by measuring an output of the DUT using dynamic element matching for performance enhancement of an output measurement device. Signal generators and circuits using aspects of the method are also discussed.