scholarly journals A 3GS/s 12-bit Current-Steering Digital-to-Analog Converter (DAC) in 55 nm CMOS Technology

Electronics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 464 ◽  
Author(s):  
Wang ◽  
Guo ◽  
Zhou ◽  
Wu ◽  
Luan ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Cmos Technology ◽  
Oxide Semiconductor ◽  
Total Power ◽  
Current Steering ◽  
Hardware Complexity ◽  
Digital To Analog Converter ◽  
Switching Current ◽  
Analog Converter ◽  
Digital To Analog

A 3GS/s 12-bit current-steering digital-to-analog converter (DAC) fabricated in 55 nm complementary metal–oxide–semiconductor (CMOS) technology has been presented. A partial randomization dynamic element matching (PRDEM) method based on switching sequence optimization is proposed to mitigate the mismatch effect and suppress the harmonic distortion with low hardware complexity. In the switching current cell, the cascode structure together with “always-ON” small current sources are used to keep the output impedance high and uniform. A compact layout of the switching current array is carefully designed, featuring short wires routing and small parasitic capacitance. According to the measured results at 3GS/s, this DAC demonstrates a spurious-free dynamic range (SFDR) of 74.64 dBc at low frequency and 50 dBc at 1.5 GHz output. The chip occupies an active area of 0.2 × 0.48 mm2 and consumes a total power of 495 mW.

Nonlinearity Analysis of Resistive Ladder-Based Current-Steering Digital-to-Analog Converter

2020 ◽  
Author(s):  
Manato Hirai ◽  
Hiroshi Tanimoto ◽  
Yuji Gendai ◽  
Shuhei Yamamoto ◽  
Anna Kuwana ◽  
...  
Keyword(s):  
Current Steering ◽  
Digital To Analog Converter ◽  
Analog Converter ◽  
Digital To Analog

A 12-BIT 400-MS/s CURRENT-STEERING DAC WITH DEGLITCHING TECHNIQUE

2014 ◽  
Vol 23 (01) ◽  
pp. 1450004 ◽  
Author(s):  
XIAOBO XUE ◽  
XIAOLEI ZHU ◽  
QIFENG SHI ◽  
LENIAN HE
Keyword(s):  
Dynamic Range ◽  
Supply Voltage ◽  
Cmos Technology ◽  
Signal Frequency ◽  
Current Steering ◽  
Digital To Analog Converter ◽  
Measurement Results ◽  
Voltage Swing ◽  
Current Steering Dac ◽  
Low Supply Voltage

In this paper, a 12-bit current-steering digital-to-analog converter (DAC) employing a deglitching technique is proposed. The deglitching technique is realized by lowering the voltage swing of the control signal as well as by using a method of glitch counteraction (GC). A new switch–driver structure is designed to enable the effectiveness of the GC and provide sufficient driving capability under a low supply voltage. Moreover, the control signal's rise/fall asymmetry which increases the glitch error can be suppressed by using the proposed switch–driver structure. The 12-bit DAC is implemented in 180 nm CMOS technology. The measurement results show that the spurious free dynamic range (SFDR) at low signal frequency is 78.8 dB, and it is higher than 70 dB up to 60 MHz signal frequency at 400 MS/s. The measured INL and DNL are both less than ±0.6 LSB.

Two-Dimensional Structure Compatible with DEM Methods Utilizing in DACs

2018 ◽  
Vol 27 (09) ◽  
pp. 1850142 ◽  
Author(s):  
Mehdi Bandali ◽  
Omid Hashemipour
Keyword(s):  
Dynamic Range ◽  
Cmos Technology ◽  
Dimensional Structure ◽  
Signal Frequency ◽  
Two Dimensional ◽  
Dynamic Element Matching ◽  
Digital To Analog Converter ◽  
Spurious Free Dynamic Range ◽  
Analog Converter ◽  
Free Dynamic

A two-dimensional digital-to-analog converter (DAC) structure compatible with dynamic element matching (DEM) methods is presented. Unlike the DACs using segmented structure for employing DEM, the new structure randomizes inter-segment error. This advantage is achieved because of the characteristics of the algorithm of two-dimensional decoding. The simulation results in 180[Formula: see text]nm CMOS technology, 319.72[Formula: see text]MHz signal frequency and 800[Formula: see text]MS/s sample rate for an 8-bit two-dimensional DAC utilizing the presented structure, shows 14.94[Formula: see text]dB spurious-free dynamic range (SFDR) improvement compared to the SFDR of the same DAC without employing the presented structure. Also, the IMD3 of the DAC employing the presented structure for [Formula: see text][Formula: see text]MHz and [Formula: see text][Formula: see text]MHz is 50.1[Formula: see text]dB.

3rd–Order Dual Truncation 18-Bit Audio MASH 2-1 Delta-Sigma Digital to Analog Converter in 90nm CMOS Technology Implementation

2014 ◽  
pp. 276-280
Author(s):  
Olga Joy Labajo-Gerasta ◽  
Mycel Capilayan ◽  
Mark Laurence Dandan ◽  
Sittie Aleyah Magayo-ong
Keyword(s):  
Technology Implementation ◽  
Cmos Technology ◽  
Digital To Analog Converter ◽  
Delta Sigma ◽  
Analog Converter ◽  
Digital To Analog
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