The pipelined adc architecture is suitable to the sampling rate and the resolution. Haze, basic block of pipelined adc design requirements basic block of pipelined adc design requirements vilem kledrowetz, jiri haze dept. Itc2ncs where itc is the information transfer capacity in symbolssec, n is the number of bits and cs is the conversion speed, for example, an 8bit, 1gsps adc has an itc of 2. Pipelined adc free download as powerpoint presentation. Introduction an adc with a medium speed and a medium resolution is an essential component for 802. The analog to digital converter is a critical stage for the system going from the very frontend stages to digital memories. Adc is the architecture of choice for applications that require both speed and accuracy and where latency is not concern. Modeling and implementation of a 6 bit, 50mhz pipelined. However, they also bring some drawbacks affecting the adc performance, such as nonlinearity and distortion.
Highperformance pipeline ad converter design in deep. The ascent max ductless fume hood with secondary hepa filter has an efficiency of 99. A digitally calibrated 12 bits 25 mss pipelined adc with. A novel design of 9bit pipeline adc manju devi, arunkumar p chavan, dr k. The basic idea behind the pipeline adc is that each stage will first sample and hold the input then compare this to vref2. How to choose september 16, 2016 by janet heath assuming that you are familiar with the fundamental specifications of an adc and what they mean, the next step is to know your entire signal chain well and then work to fit the adc to the requirements.
Pipelined adc analog to digital converter digital to. Keywords analogtodigital converter pipeline adc highswing ampli. Understanding pipelined adcs maxim integrated analog. Hugh barnaby, chair bertan bakkaloglu jennifer blain christen arizona state university august 2012. Keywords analog to digital converter, pipelined adc, sar adc, timeinterleaved technique i. Index terms analogtodigital converter, capacitor mismatch. The direct conversion approach is a good one for exploiting todays adc technology and provides a good platform for migrating to future adc. A design tradeoff which exists for pipeline adcs is the choice between a larger number of bits resolved per stage hence less latency, but more design complexity, or a fewer number of bits. A figureofmerit to evaluate the performance of an adc is its information transfer capacity. Adc modeling for system simulation kalle folkesson liuteklic2003. Boser, a 12b, 75mss pipelined adc using openloop residue amplification, isscc dig. We present here a high speed converter configuration designed to multiplex 3 analog channels through one analog to digital converter.
Choose a web site to get translated content where available and see local events and offers. Keywords pipelined adc, mdac, sc technique, matlab model, thermal noise, opamp. Adc architectures university of california, berkeley. Be abstract we present a 200 mss 2x interleaved 14 bit pipelined sar. Abstract in this paper, design of low power, 9bit pipeline adc architecture is introduced. Correction of nonideal amplifiers effect in pipelined adcs. It is a first step for a multiplexed 64 channel design. In the second phase, called the amplifying phase, c f is switched into feedback around the amplifier and the bottom. Reduction of power and area is achieved by completely merging the frontend sampleandhold ampli. How to tradeoff and get rid of these bad factors are the hot points in the lowpower pipelined adc design area. Nonetheless, pipelined adcs of various forms have improved greatly in speed, resolution, dynamic performance, and low power in recent years. A pipeline adc architecture has a 3 stage pipeline adc with 3bit flash adc followed by a 3 bit dac at each stage.
A pipelined adc with digital correction for ieee 802. Folding and interpolating adcs ucla samueli school of. Pipeline adc builtin self test hal archive ouverte. A 10bit, 200mss cmos pipeline adc using new shared. Page 21 measurement results 12bit adc w extra 2bits for calibration. How to merge pdfs and combine pdf files adobe acrobat dc. Accuracy needed for fine adc relaxed by introducing interstage gain example. Sha stage 1 stage 2 stage 10 2 2 10 vin dout adc dacg 2 vin1 vres1 clk 1. Block diagram a 10bit pipeline adc was designed with 100mhz nyquist frequency at full scale of 500mv. Specific new design techniquesalgorithms include 1 a powerefficient, capacitor ratioindependent conversion scheme, 2 a pipeline stagescaling algorithm, 3 a nested cmos gainboosting technique, 4 a. In this paper, a 10bit 50mss nyquistrate cmos pipelined analogtodigital converter adc with digital correction is presented for the wlan application. During the first clock phase, the signal is sampled onto the sampling capacitors c s and c f. In this article, we discuss what design factors drive the selection of the adc, how to specify the adc and when to choose between a pipeline adc and a sigmadelta. Migrating to the new pic24f pipeline and sigmadelta adcs.
This thesis addresses these challenges using the pipeline adc as a demonstration platform. A 12bit 50m sampless digitally selfcalibrated pipelined adc by xiaohong du a thesis submitted to the graduate faculty in partial fulfillment of the requirements for the degree of master of science major. This research is dedicated to develop a pipeline adc design methodology with minimum power dissipation, while keeping relatively high speed and high resolution. Background calibration techniques for multistage pipelined. A pipelined adc, reconfigurable over bandwidths of 0.
Ee247 lecture 23 university of california, berkeley. You can merge pdfs or a mix of pdf documents and other files. A single ended version of the common capacitor flipover implementation of a 1. The pipeline analogtodigital converter adc architecture is the most popular topology for video processing,telecommunications,digital imaging etc. The pipelined adc including nonidealities was modeled in matlab simulink simulation environment. Pipelined adc architectures general pipelined system each stage performs an operation on the signal, provides the output for the following sampler, and, once the sampler has acquired the data, begins the same operation on the next signal. Among various adc architectures, the pipelined adc is considered as one of the best candidates to ful. Therefore, the feedback gain from the output node to the input node of the amplifier is 1. Yoshioka et al 10bit, 125 mss, 40 mw pipelined adc in 0.
Secondly, the capacitor is connected to the input and output nodes of the amplifier only during the hold phase. The analog output signal of ith stage in the pipelined adc based on input signal can be expressed as. This type of fume hood is suitable for applications involving solid particles, chemicals in powdered form and aerosols. Analog to digital converter, operational trans conductance amplifier, design of all the blocks used in pipeline introduction this project report presents the design of 12bit pipeline adc operating at sampling rate of 100mhz. Simulation results confirm that 16bit linearity can be achieved after calibration for an adc with 0 1% capacitor mismatches and 60 db opamp gain. Adc1 control register 1 this register controls the basic operation of the adc module, including. Click, drag, and drop to reorder files or press delete to remove any content you dont want.
Page 1 ee247 lecture 22 adc converters pipelined adcs eecs 247 lecture 22. Choose the right data converter for your application. A 12bit 50m sampless digitally selfcalibrated pipelined adc. Pipelined adc with four 3bit stages each stage resolves two bits. Examples of pipeline adc and successive approximation. Below is a simulink model for a pipelined adc including nonidealities such as offsets, matching, and noise. The idea that an adc can be put at the antenna and somehow rid a high performance radio of the lna, bpf, agc, and mixer is a pipe dream. Pdf a low power pipeline adc with digital correction logic.
Esco max ductless fume hood with secondary hepa filter. Top level performance simulation to verify the adcs top level performance, the adc was. Introduction a pipelined adc architecture offers good tradeoff between conversion rate, resolution and power con. Pipeline adc is a mixedsignal system, which consists of sample and hold amplifier sha, subadc, multiplying digitaltoanalog converter mdac and bandgap voltage reference. The effect of switch resistance on pipelined adc mdac. Click add files and select the files you want to include in your pdf. Based on your location, we recommend that you select. A 10 bit opampsharing pipeline analogtodigital converter adc using a novel mirror telescopic operational amplifiers opamp with dual nmos differential inputs is presented. The analogtodigital converter adc is a key component in digital communications receive channels, and the correct choice of adc is critical for optimizing system design. Video lectures on cmos mixed signal vlsi design by prof. The pipelined adc is a practical and efficient structure for moderate speed1200mss, moderate resolution 1016 bits adcs.
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