Assembly line a/d converter and method for eliminating sampling-hold circuit
A sample-and-hold circuit, analog-to-digital converter technology, applied in analog-to-digital conversion, code conversion, instruments, etc., can solve problems such as low sampling rate, and achieve the effect of improving tolerance
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[0031] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to specific embodiments and drawings.
[0032] The invention provides a pipelined analog-to-digital converter that eliminates sample-and-hold circuits. The first-stage MDAC in the pipelined analog-to-digital converter adopts a 1.5-bit structure, so that the error correction range of the first-stage comparator is relatively large.
[0033]Further, the sampling-related switches in the first-stage MDAC circuit include Sc1, Sc2, Ss1, Ss2, Sf1, Sf2, and the sampling-related switches in the first-stage SUBADC include Sc3, Sc4, Sc5, Sc6, Ss3, Ss4, Ss5, Ss6, the pipeline analog-to-digital converter further uses the same clock signal ph1e to control Sc1, Sc2, Sc3, Sc4, Sc5 and Sc6, and uses the same clock signal ph1 to control Ss1, Ss2, Sf1, Sf2 Ss3, Ss4, Ss5, and Ss6 to eliminate the difference between ...
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