Background digital error correction technique for pipelined analog-digital converters
نویسندگان
چکیده
This paper describes a technique for digital error correction in pipelined analog-digital converters. It makes use of a slow, high resolution ADC in conjunction with an LMS algorithm to perform error correction in the background during normal conversion. The algorithm will be shown to correct for errors due to capacitor ratio mismatch, finite amplifier gain and charge injection within the same framework.
منابع مشابه
Optimal fast digital error correction method of pipelined analog to digital converter with DLMS algorithm
In this paper, convergence rate of digital error correction algorithm in correction of capacitor mismatch error and finite and nonlinear gain of Op-Amp has increased significantly by the use of DLMS, an evolutionary search algorithm. To this end, a 16-bit pipelined analog to digital converter was modeled. The obtained digital model is a FIR filter with 16 adjustable weights. To adjust weights o...
متن کاملAnalysis of Integral Nonlinearity in Radix-4 Pipelined Analog-to-Digital Converters
In this paper an analytic approach to estimate the nonlinearity of radix-4 pipelined analog-to-digital converters due to the circuit non-idealities is presented. Output voltage of each stage is modeled as sum of the ideal output voltage and non-ideal output voltage (error voltage), in which non-ideal output voltage is created by capacitor mismatch, comparator offset, input offset, and finite ga...
متن کاملA digital background calibration technique for pipelined analog-to-digital converters
A new background calibration technique for pipelined analog-to-digital converters is proposed. By dividing the step sizes of the multiplying digital-to-analog converter (MDAC) in a pipeline stages and injecting a random signal into the MDAC, it is possible to calibrate a pipeline stage without interrupting the normal analog-to-digital operation. The calibration can eliminate the nonlinear effec...
متن کاملPerformances And Limitations Of A Technique For Background Calibration Of Capacitor Mismatch Errors In Pipelined A/D Converters
This paper analyses the performances of a recently proposed background calibration technique with digital cancellation of D/A converter noise, which has been recently proposed for highspeed, high-resolution, pipelined Analog-to-Digital Converters (ADCs).
متن کاملHarmonic Distortion Correction in Pipelined Analog to Digital Converters
OF THE DISSERTATION Harmonic Distortion Correction in Pipelined Analog to Digital Converters
متن کامل