Design and Implementation of a Low-Power Cyclic ADC for X-Ray Detector Readout Circuit

2020 ◽  
Author(s):  
Liang Xie ◽  
Zhaoxi Li ◽  
Jianlin Feng ◽  
Xiangliang Jin
Keyword(s):  
Low Power ◽  
Readout Circuit ◽  
X Ray ◽  
Design And Implementation ◽  
Cyclic Adc

A LOW-POWER 12-BIT 250 KS/S CYCLIC ADC FOR LONG LINE ARRAY INFRARED SENSORS READOUT CIRCUIT

2011 ◽  
Vol 20 (01) ◽  
pp. 57-70 ◽  
Author(s):  
HONGLIANG ZHAO ◽  
YIQIANG ZHAO ◽  
PENG LI ◽  
JUNWEI JIANG ◽  
ZHISHENG ZHANG
Keyword(s):  
Low Power ◽  
Cmos Process ◽  
Readout Circuit ◽  
Clock Frequency ◽  
Infrared Sensors ◽  
Differential Nonlinearity ◽  
Line Array ◽  
Long Line ◽  
Correction Technique ◽  
Cyclic Adc

A 12-bit cyclic analog to digital converter (ADC) used in long line array infrared sensors readout circuit is presented. The architecture of a low-power amplifier shared with two groups of switched capacitors is used to reduce power consumption. By adding cross-connected switches, the amplifier's offset is effectively canceled out. The improved redundant signed digit (RSD) correction technique is employed to compensate for the error resulting from the comparator's offset in sub-ADC, and the correction technique can tolerate high level of switched capacitor mismatch error, as well. The converter manufactured with Chartered 0.35 μm CMOS process exhibits 0.92 LSB maximum differential nonlinearity (DNL) and 1.5 LSB maximum integral nonlinearity (INL). The ADC has a 69.3 dB signal to noise and distortion ratio (SNDR) at 250 kS/s sample rate and 3 MHz clock frequency. It dissipates 0.8 mW with 3.3 V supply and occupies 0.22 × 0.9 mm2.

scholarly journals Low noise low power readout circuit for soft X ray detection

2003 ◽  
Vol 1 (03) ◽  
Author(s):  
A. Cerdeira-Estrada ◽  
A. De Luca ◽  
A. Cuttin ◽  
R. Mutihac
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Theoretical Calculations ◽  
Silicon Detector ◽  
Low Noise ◽  
Experimental Results ◽  
X Rays ◽  
Readout Circuit ◽  
X Ray ◽  
Low Power Cmos

A new low power CMOS ASIC for the detection of X-rays was optimized for low power and low noise. Theoretical calculations and optimizations are presented and compared with experimental results. Noise as low as 120+25*Cin [pF] ENC rms was obtained including a silicon detector of 1.3 pF and 0.3nA of leakage. The power consumption is less than 100 W. Other circuit parameters are also shown.

A low-power 14-bit hybrid incremental sigma-delta/cyclic ADC for X-ray sensor array

2016 ◽  
Author(s):  
Zhuo Zhang ◽  
Yacong Zhang ◽  
Miaomiao Fair ◽  
Meng Zhao ◽  
Dahe Liu ◽  
...  
Keyword(s):  
Low Power ◽  
Sensor Array ◽  
Sigma Delta ◽  
X Ray ◽  
Cyclic Adc

Low Power Pixel-Level ADC Readout Circuit for an Amorphous Silicon-Based Microbolometer

2009 ◽  
Vol E92-C (5) ◽  
pp. 708-712
Author(s):  
Dong-Heon HA ◽  
Chi Ho HWANG ◽  
Yong Soo LEE ◽  
Hee Chul LEE
Keyword(s):  
Low Power ◽  
Amorphous Silicon ◽  
Readout Circuit ◽  
Silicon Based

ANALYSIS OF MULTI-ELEMENT POWDERS AND SOLUTIONS OF METALS WITH A PYROELECTRIC X-RAY GENERATOR

2005 ◽  
Vol 15 (01n02) ◽  
pp. 19-25 ◽  
Author(s):  
TETSUYA KOYAMA ◽  
JUN KAWAI
Keyword(s):  
Low Power ◽  
Background Level ◽  
Solid Samples ◽  
Portable Xrf ◽  
X Ray ◽  
Metal Elements ◽  
Xrf Analysis ◽  
Liquid Samples

Applications of X-ray fluorescence (XRF) analysis to solid and liquid samples with a pyroelectric X-ray generator are described. The X-ray generator is driven by a 9 V dry electric battery and small dimensions. It enables compact and portable XRF spectrometer. It has disadvantages in low power and periodically changing X-ray flux. Measured solid samples are briquettes from powdery oxides of Ti , V , Cr , Mn , Fe , Co , Ni and Cu , and sulfide of Zn . Each sample is prepared to contain equal molar metal elements. Liquid samples are solutions of Fe , Cr , Zn , Pb , Bi , Cd . K α and K β lines of all metals in solid samples are detected. Although background level was relatively high for liquids, all metals in the measured samples were detected within 70 seconds, except for Cd . The capability of XRF with the pyroelectric X-ray generator is discussed.

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