Analog-to-digital conversion non-linear error restoration circuit composition in integrated circuit and method thereof
A nonlinear error, integrated circuit technology, applied in the field of digital logic circuit design and integrated circuit, can solve problems such as quantization error, achieve the effect of repairing nonlinear error, wide application range, stable and reliable performance
Active Publication Date: 2011-10-05
SPREADTRUM COMM (SHANGHAI) CO LTD
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In other words, there is an error between the actual voltage that produces a given code and the voltage that represents that code, in this case a 0.5V offset added to the input results in a quantization error of plus or minus 0.5V at the ideal transition point
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[0037] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.
[0038] see Figure 5 As shown in the integrated circuit chip, the circuit structure for realizing the repair of the nonlinear error of analog-to-digital conversion includes an error compensation code search function module and an adder, and the output terminals of the analog-to-digital converter in the integrated circuit chip are respectively connected to the error The input end of the compensation code search function module is connected to the first input end of the adder, the output end of the error compensation code search function module is connected to the second input end of the adder, and the adder's The output terminal is connected with the digital signal output port of the integrated circuit chip.
[0039] Wherein, the error compensation code search function module is an error compensation code linear lookup table module, and the e...
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The invention relates to an analog-to-digital conversion non-linear error restoration circuit composition in an integrated circuit. The composition comprises an error compensation code search function module and an adder, wherein an output terminal of the analog-to-digital converter in an integrated circuit chip respectively connects an input terminal of the error compensation code search function module and a first input terminal of the adder, an output terminal of the error compensation code search function module connects a second input terminal of the adder, and an output terminal of the adder connects a digital signal output port of the integrated circuit chip. The invention also relates to a method of realizing analog-to-digital conversion non-linear error restoration in the integrated circuit chip based on the circuit composition. According to the analog-to-digital conversion non-linear error restoration circuit composition in the integrated circuit and a method thereof, non-linear error of an analog-to-digital conversion device is effectively restored. The composition has the advantages of simplicity, practicality, low development cost, wide scope of application, support of 8 analog-to-digital converter devices, and wide application prospect in the analog-to-digital conversion field.
Description
technical field [0001] The invention relates to the field of integrated circuits, in particular to the technical field of digital logic circuit design, in particular to a circuit structure and method for realizing the repair of non-linear errors of analog-to-digital conversion in an integrated circuit chip. Background technique [0002] In the field of integrated circuit applications, analog-to-digital signal conversion is an extremely widely used signal conversion method. Its working principle is to convert time-continuous and amplitude-continuous analog quantities into time-discrete and amplitude-discrete binary numbers. code, see figure 1 As shown, it is a schematic diagram of an analog-to-digital conversion device and an input and output signal. Here, a sine wave signal is taken as an example. After passing through the analog-to-digital conversion device, the analog signal is converted into a discrete digital signal. [0003] Digital signals are not only discrete in tim...
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IPC IPC(8): H03M1/06
Inventor 徐乐
Owner SPREADTRUM COMM (SHANGHAI) CO LTD