Why Dynamic-Element-Matching DACs Work

Galton, I.

doi:10.1109/tcsii.2010.2042131

Cited by 76 publications

(32 citation statements)

References 24 publications

(26 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The expected matching is 0.1%, leading to harmonic distortion of more than 86 dB without calibration. Notice that the 6-bit matching requirement on a capacitor-based DAC would lead to large unity elements or the need to use DEM [26].…”

Section: Resistive Divider Dacmentioning

confidence: 99%

A 88-dB DR, 84-dB SNDR Very Low-Power Single Op-Amp Third-Order $\Sigma \Delta$ Modulator

Pena-Perez

Bonizzoni

Maloberti

2012

IEEE J. Solid-State Circuits

View full text Add to dashboard Cite

A low-power switched-capacitor third-order sigmadelta modulator suitable for portable sensor systems is described. The architecture uses only one operational amplifier working in a time-interleaved fashion. The architecture employs swing reduction techniques to limit the swing and the slew-rate requirements of all internal nodes. Realized in a 0.18-m 2P6M CMOS technology, the modulator provides 84-dB SNDR and 88-dB dynamic range in a signal bandwidth of 100 kHz and clock at 3.2 MHz. The 1.5-V supplied prototype dissipates 140 W with a FoM of 54 fJ/conversion-level.

show abstract

Section: Resistive Divider Dacmentioning

confidence: 99%

A 88-dB DR, 84-dB SNDR Very Low-Power Single Op-Amp Third-Order $\Sigma \Delta$ Modulator

Pena-Perez

Bonizzoni

Maloberti

2012

IEEE J. Solid-State Circuits

View full text Add to dashboard Cite

show abstract

“…A similar derivation is made in [53], whereas an alternative way to generalize the theory to also include DEM DACs of any resolution is suggested here.…”

Section: Dynamic Element Matching In a 3-level Dacmentioning

confidence: 92%

“…From this result we can conclude that if the switch signal s is a white noise random variable, the DEM DAC will on average have a perfectly linear transfer function. This is sometimes referred to mismatch-scrambling DEM [53]. Optionally, the statistical properties of s can be changed to spectrally shape the mismatch error.…”

Section: Dynamic Element Matching In a 3-level Dacmentioning

confidence: 99%

Design of Integrated Building Blocks for the Digital/Analog Interface

Andersson¹

2015

Linköping Studies in Science and Technology. Dissertations

View full text Add to dashboard Cite

The integrated circuit has, since it was invented in the late 1950's, undergone a tremendous development and is today found in virtually all electric equipment. The small feature size and low production cost have made it possible to implement electronics in everyday objects ranging from computers and mobile phones to smart prize tags. Integrated circuits are typically used for data communication, signal processing and data storage. Data is usually stored in digital format but signal processing can be performed both in the digital and in the analog domain. For best performance, the right partition of signal processing between the analog and digital domain must be used. This is made possible by data converters converting data between the domains. A device converting an analog signal into a digital representation is called an analog-to-digital converter (ADC) and a device converting digital data into an analog representation is called a digital-to-analog converter (DAC). In this work we present research results on these data converters and the results are compiled in three different categories. The first contribution is an error correction technique for DACs called dynamic element matching, the second contribution is a power efficient time-to-digital converter architecture and the third is a design methodology for frequency synthesis using digital oscillators.The accuracy of a data converter, i.e., how accurate data is converted, is often limited by manufacturing errors. One type of error is the so-called matching error and in this work we investigate an error correction technique for DACs called dynamic element matching (DEM). If distortion is limiting the performance of a DAC, the DEM technique increases the accuracy of the DAC by transforming the matching error from being signal dependent, which results in distortion, to become signal independent noise. This noise can then be spectrally shaped or filtered out and hereby increasing the overall resolution of the system. The DEM technique is investigated theoretically and the theory is supported by measurement results from an implemented 14-bit DAC using DEM. From the investigation it is concluded that DEM increases the performance of the DAC when matching errors are dominating but has less effect at conversion speeds when dynamic errors dominate.The next contribution is a new time-to-digital converter (TDC) architecture. A TDC is effectively an ADC converting a time difference into a digital representation. The proposed architecture allows for smaller and more power efficient data conversion than previously reported and the implemented TDC prototype is smaller and more power efficient as compared to previously published TDCs in the same performance segment.The third contribution is a design methodology for frequency synthesis using digital oscillators. Digital oscillators generate a sinusoidal output using recursive algorithms. We show that the performance of digital oscillators, in terms of amplitude and frequency stability, to a large extent depends on t...

show abstract

“…Techniques such as dynamic element matching [16][17][18] utilize averaging techniques, enabled by the availability of dense, low-cost logic gates in the technology. These are used to minimize component mismatch for small device sizes, whereas using conventional analog design methods would require large device sizes to produce this same mismatch performance.…”

Section: Integration or Notmentioning

confidence: 99%

The World Is Analog

El-Kareh¹,

Hutter²

2015

Silicon Analog Components

View full text Add to dashboard Cite

As digital processing extends to more products, an ever-increasing number of analog integrated chips are required. This is because analog processing is essential in allowing the benefits of digital processing to be realized by providing the interface between the real world (analog) and the computer (digital). This chapter covers the diversity of analog applications and voltage requirements, and gives a high-level overview of the many process technologies and components that are encountered in the analog world.

show abstract

Why Dynamic-Element-Matching DACs Work

Cited by 76 publications

References 24 publications

A 88-dB DR, 84-dB SNDR Very Low-Power Single Op-Amp Third-Order $\Sigma \Delta$ Modulator

A 88-dB DR, 84-dB SNDR Very Low-Power Single Op-Amp Third-Order $\Sigma \Delta$ Modulator

Design of Integrated Building Blocks for the Digital/Analog Interface

The World Is Analog

Contact Info

Product

Resources

About